EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet The Mighty Gecko multiprotocol family of SoCs is part of the Wireless Gecko portfolio. Mighty Gecko SoCs are ideal for enabling energy-friendly multiprotocol, multiband networking for IoT devices. KEY FEATURES * 32-bit ARM(R) Cortex(R)-M33 core with 80 MHz maximum operating frequency The single-die solution combines an 80 MHz ARM Cortex-M33 with a high performance 2.4 GHz radio to provide an industry-leading, energy efficient wireless SoC for IoT connected applications. * Up to 1024 kB of flash and 96 kB of RAM * 12-channel Peripheral Reflex System enabling autonomous interaction of MCU peripherals Mighty Gecko applications include: * * * * * * Integrated PA with up to 20 dBm (2.4 GHz) TX power IoT Multi-Protocol Devices Lighting Connected Home Gateways and Digital Assistants Building Automation and Security * Robust peripheral set and up to 20 GPIO in a 4x4 QFN package Core / Memory ARM CortexTM M33 processor with DSP extensions, FPU and TrustZone ETM Clock Management HF Crystal Oscillator Flash Program Memory Debug Interface HF RC Oscillator Energy Management Fast Startup RC Oscillator Voltage Regulator EM23 HF RC Oscillator LF Crystal Oscillator LDMA Controller RAM Memory Ultra LF RC Oscillator LF RC Oscillator Security Crypto Acceleration Advanced Security Brown-Out Detector True Random Number Generator Power-On Reset Security Core 32-bit bus Peripheral Reflex System Radio Transceiver FRC I Q IFADC PGA BUFC DEMOD RF Frontend LNA Serial Interfaces I/O Ports Timers and Triggers Analog I/F USART External Interrupts Timer/Counter Protocol Timer ADC I2C General Purpose I/O Low Energy Timer Watchdog Timer Analog Comparator PA RAC Frequency Synth CRC AGC PA MOD Pin Reset Real Time Capture Counter Pin Wakeup Back-Up Real Time Counter Lowest power mode with peripheral operational: EM0--Active EM1--Sleep silabs.com | Building a more connected world. EM2--Deep Sleep EM3--Stop EM4--Shutoff Rev. 1.0 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Feature List 1. Feature List The EFR32MG21 highlighted features are listed below. * Low Power Wireless System-on-Chip * High Performance 32-bit 80 MHz ARM Cortex(R)-M33 with DSP instruction and floating-point unit for efficient signal processing * Up to 1024 kB flash program memory * Up to 96 kB RAM data memory * 2.4 GHz radio operation * TX power up to 20 dBm * Low Energy Consumption * 8.8 mA RX current at 2.4 GHz (1 Mbps GFSK) * 9.4 mA RX current at 2.4 GHz (250 kbps O-QPSK DSSS) * 9.3 mA TX current @ 0 dBm output power at 2.4 GHz * 33.8 mA TX current @ 10 dBm output power at 2.4 GHz * 50.9 A/MHz in Active Mode (EM0) * 5.0 A EM2 DeepSleep current (96 kB RAM retention and RTC running from LFXO) * 4.5 A EM2 DeepSleep current (16 kB RAM retention and RTC running from LFRCO) * High Receiver Performance * -104.5 dBm sensitivity @ 250 kbps O-QPSK DSSS * -97.5 dBm sensitivity @ 1 Mbit/s GFSK * -94.4 dBm sensitivity @ 2 Mbit/s GFSK * -104.9 dBm sensitivity @ 125 kbps GFSK * Supported Modulation Formats * GFSK * OQPSK * Protocol Support * Bluetooth Low Energy (Bluetooth 5) * Zigbee * Thread silabs.com | Building a more connected world. * Wide selection of MCU peripherals * 12-bit 1 Msps SAR Analog to Digital Converter (ADC) * 2 x Analog Comparator (ACMP) * Up to 20 General Purpose I/O pins with output state retention and asynchronous interrupts * 8 Channel DMA Controller * 12 Channel Peripheral Reflex System (PRS) * 2 x 16-bit Timer/Counter * 3 Compare/Capture/PWM channels * 1 x 32-bit Timer/Counter * 3 Compare/Capture/PWM channels * 32-bit Real Time Counter * 24-bit Low Energy Timer for waveform generation * 2 x Watchdog Timer * 3 x Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard(ISO 7816)/IrDA/I2S) * 2 x I2C interface with SMBus support * Wide Operating Range * 1.71 V to 3.8 V single power supply * -40C to 125C ambient * Standard Security * Hardware Cryptographic Acceleration for AES128/256, SHA-1, SHA-2 (up to 256-bit), ECC (up to 256-bit), ECDSA (up to 256-bit), ECDH, and J-Pake. * True Random Number Generator (TRNG) * ARM TrustZone * Secure Boot * Secure Debug Unlock * QFN32 4x4 mm Package * 0.4 mm pitch Rev. 1.0 | 2 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Ordering Information 2. Ordering Information Table 2.1. Ordering Information Ordering Code Max TX Power @ FreProtocol Stack quency Band Flash (kB) RAM (kB) Security GPIO Package EFR32MG21A010F1024IM32-B * Bluetooth 5 * Zigbee * Thread 10 dBm @ 2.4 GHz 1024 96 Standard 20 QFN32 EFR32MG21A010F512IM32-B * Bluetooth 5 * Zigbee * Thread 10 dBm @ 2.4 GHz 512 64 Standard 20 QFN32 EFR32MG21A010F768IM32-B * Bluetooth 5 * Zigbee * Thread 10 dBm @ 2.4 GHz 768 64 Standard 20 QFN32 EFR32MG21A020F1024IM32-B * Bluetooth 5 * Zigbee * Thread 20 dBm @ 2.4 GHz 1024 96 Standard 20 QFN32 EFR32MG21A020F512IM32-B * Bluetooth 5 * Zigbee * Thread 20 dBm @ 2.4 GHz 512 64 Standard 20 QFN32 EFR32MG21A020F768IM32-B * Bluetooth 5 * Zigbee * Thread 20 dBm @ 2.4 GHz 768 64 Standard 20 QFN32 silabs.com | Building a more connected world. Rev. 1.0 | 3 Table of Contents 1. Feature List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 Radio . . . . . . . . . . . . 3.2.1 Antenna Interface . . . . . . 3.2.2 Fractional-N Frequency Synthesizer 3.2.3 Receiver Architecture . . . . . 3.2.4 Transmitter Architecture . . . . 3.2.5 Packet and State Trace . . . . 3.2.6 Data Buffering . . . . . . . . 3.2.7 Radio Controller (RAC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 General Purpose Input/Output (GPIO) . . . . . . . . . . . . . . . . . . . . . . 8 3.4 Clocking . . . . . . . . . . 3.4.1 Clock Management Unit (CMU) . 3.4.2 Internal and External Oscillators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 . 8 . 8 3.5 Counters/Timers and PWM . . . . . . 3.5.1 Timer/Counter (TIMER) . . . . . 3.5.2 Low Energy Timer (LETIMER) . . . 3.5.3 Real Time Clock with Capture (RTCC) 3.5.4 Back-Up Real Time Counter . . . . 3.5.5 Watchdog Timer (WDOG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8 8 9 9 9 3.6 Communications and Other Digital Peripherals . . . . . . . . . . 3.6.1 Universal Synchronous/Asynchronous Receiver/Transmitter (USART) . 3.6.2 Inter-Integrated Circuit Interface (I2C) . . . . . . . . . . . . 3.6.3 Peripheral Reflex System (PRS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 9 9 9 3.7 Security Features . . . . . . . . 3.7.1 Standard Security . . . . . . 3.7.2 True Random Number Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 .10 .10 3.8 Analog. . . . . . . . . . . . 3.8.1 Analog Comparator (ACMP) . . . 3.8.2 Analog to Digital Converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 .10 .10 3.9 Reset Management Unit (RMU) . . . . . . . . . . . . . . . . . . . . . .10 3.10 Core and Memory . . . . . . . . . . . . 3.10.1 Processor Core . . . . . . . . . . . . 3.10.2 Memory System Controller (MSC) . . . . . 3.10.3 Linked Direct Memory Access Controller (LDMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 .11 .11 .11 3.11 Memory Map . . . . . . . . . . . . . . 6 6 7 7 7 7 7 7 . . . . . . . . . . . . . . . . . . . . . . . . . . .12 3.12 Configuration Summary . . . . . . . . . . . . . . . . . . . . . . . . . .13 4. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.1 Electrical Characteristics silabs.com | Building a more connected world. . . . . . . . . . . . . . . . . . . . . . . . . . .14 Rev. 1.0 | 4 4.1.1 Absolute Maximum Ratings . . . . 4.1.2 General Operating Conditions . . . 4.1.3 Thermal Characteristics . . . . . 4.1.4 Current Consumption . . . . . . 4.1.5 2.4 GHz RF Transceiver Characteristics 4.1.6 Flash Characteristics . . . . . . 4.1.7 Wake Up, Entry, and Exit times . . . 4.1.8 Oscillators . . . . . . . . . . 4.1.9 GPIO Pins (3V GPIO pins) . . . . 4.1.10 Analog to Digital Converter (ADC) . 4.1.11 Analog Comparator (ACMP) . . . 4.1.12 Temperature Sense . . . . . . 4.1.13 Brown Out Detectors . . . . . . 4.1.14 SPI Electrical Specifications . . . 4.1.15 I2C Electrical Specifications. . . . 4.2 Typical Performance Curves . 4.2.1 Supply Current . . . . 4.2.2 2.4 GHz Radio . . . . 5. Typical Connection Diagrams 5.1 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 .15 .16 .17 .22 .37 .38 .39 .44 .45 .47 .48 .49 .51 .52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54 .55 .57 . . . . . . . . . . . . . . . . . . . . . . . . 60 . . . . . . . . . . . . . . . . . . . . .60 5.2 RF Matching Networks . . . . . . 5.2.1 2.4 GHz 0 dBm Matching Network . 5.2.2 2.4 GHz 10 dBm Matching Network 5.2.3 2.4 GHz 20 dBm Matching Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 .60 .61 .62 5.3 Other Connections. . . . . . . . . . . . . . . . . . . . . .62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6. Pin Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 6.1 QFN32 2.4GHz Device Pinout . . . . . . . . . . . . . . . . . . . . . . . . .63 6.2 Alternate Function Table. . . . . . . . . . . . . . . . . . . . . . . . . .64 6.3 Analog Peripheral Connectivity . . . . . . . . . . . . . . . . . . . . . . . .65 6.4 Digital Peripheral Connectivity . . . . . . . . . . . . . . . . . . . . . . . . .66 7. QFN32 Package Specifications. . . . . . . . . . . . . . . . . . . . . . . . 69 . 7.1 QFN32 Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . .69 7.2 QFN32 PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . . . . .71 7.3 QFN32 Package Marking . . . . . . . . . . . . . . . . . . . . . . . . .73 8. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 silabs.com | Building a more connected world. Rev. 1.0 | 5 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet System Overview 3. System Overview 3.1 Introduction The EFR32 product family combines an energy-friendly MCU with a high performance radio transceiver. The devices are well suited for secure connected IoT multiprotocol devices requiring high performance and low energy consumption. This section gives a short introduction to the full radio and MCU system. The detailed functional description can be found in the EFR32xG21 Reference Manual. A block diagram of the EFR32MG21 family is shown in Figure 3.1 Detailed EFR32MG21 Block Diagram on page 6. The diagram shows a superset of features available on the family, which vary by OPN. For more information about specific device features, consult Ordering Information. Radio Transciever RF2G4_IO1 Q IFADC PGA FRC LNA Port I/O Configuration DEMOD I BUFC RF Frontend Digital Peripherals LETIMER AGC MOD TIMER RAC Frequency Synthesizer PA CRC PA RF2G4_IO2 IOVDD RTC Port A Drivers PAn Port B Drivers PBn Port C Drivers PCn Port D Drivers PDn USART Debug Signals (shared w/GPIO) Serial Wire and ETM Debug / Programming Reset Management Unit Brown Out / Power-On Reset Up to 1024 kB Flash Program Memory Up to 96 KB RAM Trust Zone PAVDD Energy Management Floating Point Unit Port Mapper I2C ARM Cortex-M33 Core Security Acceleration A A H P B B TRNG CRC DMA Controller RFVDD IOVDD Analog Peripherals AVDD Watchdog Timer DVDD Internal Reference DECOUPLE LFXTAL_I LFXTAL_O HFXTAL_I HFXTAL_O ULFRCO FSRCO HFRCOEM2 12-bit ADC Input Mux Clock Management Voltage Regulator VDD LFRCO LFXO HFRCO HFXO Port Mapper RESETn + Analog Comparator Figure 3.1. Detailed EFR32MG21 Block Diagram 3.2 Radio The EFR32MG21 Mighty Gecko features a highly configurable radio transceiver supporting Zigbee, Thread, and Bluetooth Low Energy wireless protocols. 3.2.1 Antenna Interface The 2.4 GHz antenna interface consists of two single-ended pins (RF2G4_IO1 and RF2G4_IO2) that interface directly to two LNAs and two 10 dBm PAs. For devices that support 20 dBm, these pins also interface to the 20 dBm on-chip balun. Integrated switches select either RF2G4_IO1 or RF2G4_IO2 to be the active path. The external components and power supply connections for the antenna interface typical applications are shown in the RF Matching Networks section. silabs.com | Building a more connected world. Rev. 1.0 | 6 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet System Overview 3.2.2 Fractional-N Frequency Synthesizer The EFR32MG21 contains a high performance, low phase noise, fully integrated fractional-N frequency synthesizer. The synthesizer is used in receive mode to generate the LO frequency for the down-conversion mixer. It is also used in transmit mode to directly generate the modulated RF carrier. The fractional-N architecture provides excellent phase noise performance, frequency resolution better than 100 Hz, and low energy consumption. The synthesizer's fast frequency settling allows for very short receiver and transmitter wake up times to reduce system energy consumption. 3.2.3 Receiver Architecture The EFR32MG21 uses a low-IF receiver architecture, consisting of a Low-Noise Amplifier (LNA) followed by an I/Q down-conversion mixer. The I/Q signals are further filtered and amplified before being sampled by the IF analog-to-digital converter (IFADC). The IF frequency is configurable from 150 kHz to 1371 kHz. The IF can further be configured for high-side or low-side injection, providing flexibility with respect to known interferers at the image frequency. The Automatic Gain Control (AGC) module adjusts the receiver gain to optimize performance and avoid saturation for excellent selectivity and blocking performance. The 2.4 GHz radio is calibrated at production to improve image rejection performance. Demodulation is performed in the digital domain. The demodulator performs configurable decimation and channel filtering to allow receive bandwidths ranging from 0.1 to 2530 kHz. High carrier frequency and baud rate offsets are tolerated by active estimation and compensation. Advanced features supporting high quality communication under adverse conditions include forward error correction by block and convolutional coding as well as Direct Sequence Spread Spectrum (DSSS). A Received Signal Strength Indicator (RSSI) is available for signal quality metrics, for level-based proximity detection, and for RF channel access by Collision Avoidance (CA) or Listen Before Talk (LBT) algorithms. An RSSI capture value is associated with each received frame and the dynamic RSSI measurement can be monitored throughout reception. 3.2.4 Transmitter Architecture The EFR32MG21 uses a direct-conversion transmitter architecture. For constant envelope modulation formats, the modulator controls phase and frequency modulation in the frequency synthesizer. Transmit symbols or chips are optionally shaped by a digital shaping filter. The shaping filter is fully configurable, including the BT product, and can be used to implement Gaussian or Raised Cosine shaping. Carrier Sense Multiple Access - Collision Avoidance (CSMA-CA) or Listen Before Talk (LBT) algorithms can be automatically timed by the EFR32MG21. These algorithms are typically defined by regulatory standards to improve inter-operability in a given bandwidth between devices that otherwise lack synchronized RF channel access. 3.2.5 Packet and State Trace The EFR32MG21 Frame Controller has a packet and state trace unit that provides valuable information during the development phase. It features: * Non-intrusive trace of transmit data, receive data and state information * Data observability on a single-pin UART data output, or on a two-pin SPI data output * Configurable data output bitrate / baudrate * Multiplexed transmitted data, received data and state / meta information in a single serial data stream 3.2.6 Data Buffering The EFR32MG21 features an advanced Radio Buffer Controller (BUFC) capable of handling up to 4 buffers of adjustable size from 64 bytes to 4096 bytes. Each buffer can be used for RX, TX or both. The buffer data is located in RAM, enabling zero-copy operations. 3.2.7 Radio Controller (RAC) The Radio Controller controls the top level state of the radio subsystem in the EFR32MG21. It performs the following tasks: * Precisely-timed control of enabling and disabling of the receiver and transmitter circuitry * Run-time calibration of receiver, transmitter and frequency synthesizer * Detailed frame transmission timing, including optional LBT or CSMA-CA silabs.com | Building a more connected world. Rev. 1.0 | 7 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet System Overview 3.3 General Purpose Input/Output (GPIO) EFR32MG21 has up to 20 General Purpose Input/Output pins. Each GPIO pin can be individually configured as either an output or input. More advanced configurations including open-drain, open-source, and glitch-filtering can be configured for each individual GPIO pin. The GPIO pins can be overridden by peripheral connections, like SPI communication. Each peripheral connection can be routed to several GPIO pins on the device. The input value of a GPIO pin can be routed through the Peripheral Reflex System to other peripherals. The GPIO subsystem supports asynchronous external pin interrupts. All of the pins on ports A and port B are EM2 capable. These pins may be used by Low-Energy peripherals in EM2/3 and may also be used as EM2/3 pin wake-ups. Pins on ports C and D are latched/retained in their current state when entering EM2 until EM2 exit upon which internal peripherals could once again drive those pads. A few GPIOs also have EM4 wake functionality. These pins are listed in 6.2 Alternate Function Table. 3.4 Clocking 3.4.1 Clock Management Unit (CMU) The Clock Management Unit controls oscillators and clocks in the EFR32MG21. Individual enabling and disabling of clocks to all peripheral modules is performed by the CMU. The CMU also controls enabling and configuration of the oscillators. A high degree of flexibility allows software to optimize energy consumption in any specific application by minimizing power dissipation in unused peripherals and oscillators. 3.4.2 Internal and External Oscillators The EFR32MG21 supports two crystal oscillators and fully integrates five RC oscillators, listed below. * A high frequency crystal oscillator (HFXO) with integrated load capacitors, tunable in small steps, provides a precise timing reference for the MCU and RF synthesizer. The HFXO provides excellent RF clocking performance using a 38.4 MHz crystal. The HFXO can also support an external clock source such as a TCXO for applications that require an extremely accurate clock frequency over temperature. * A 32.768 kHz crystal oscillator (LFXO) provides an accurate timing reference for low energy modes. * An integrated high frequency RC oscillator (HFRCO) is available for the MCU system, when crystal accuracy is not required. The HFRCO employs fast start-up at minimal energy consumption combined with a wide frequency range, from 1 MHz to 80 MHz. * An integrated high frequency RC oscillator (HFRCOEM2) runs down to EM2 and is available for timing the general-purpose ADC and the Serial Wire Viewer port with a wide frequency range. * An integrated fast start-up RC oscillator (FSRCO) that runs at a fixed 20 MHz * An integrated low frequency 32.768 kHz RC oscillator (LFRCO) for low power operation where high accuracy is not required. * An integrated ultra-low frequency 1 kHz RC oscillator (ULFRCO) is available to provide a timing reference at the lowest energy consumption in low energy modes. 3.5 Counters/Timers and PWM 3.5.1 Timer/Counter (TIMER) TIMER peripherals keep track of timing, count events, generate PWM outputs and trigger timed actions in other peripherals through the Peripheral Reflex System (PRS). The core of each TIMER is a 16-bit or 32-bit counter with up to 3 compare/capture channels. Each channel is configurable in one of three modes. In capture mode, the counter state is stored in a buffer at a selected input event. In compare mode, the channel output reflects the comparison of the counter to a programmed threshold value. In PWM mode, the TIMER supports generation of pulse-width modulation (PWM) outputs of arbitrary waveforms defined by the sequence of values written to the compare registers. In addition some timers offer dead-time insertion. See 3.12 Configuration Summary for information on the feature set of each timer. 3.5.2 Low Energy Timer (LETIMER) The unique LETIMER is a 24-bit timer that is available in energy mode EM2 Deep Sleep in addition to EM1 Sleep and EM0 Active. This allows it to be used for timing and output generation when most of the device is powered down, allowing simple tasks to be performed while the power consumption of the system is kept at an absolute minimum. The LETIMER can be used to output a variety of waveforms with minimal software intervention. The LETIMER is connected to the Peripheral Reflex System (PRS), and can be configured to start counting on compare matches from other peripherals such as the RTC. silabs.com | Building a more connected world. Rev. 1.0 | 8 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet System Overview 3.5.3 Real Time Clock with Capture (RTCC) The Real Time Clock with Capture (RTCC) is a 32-bit counter providing timekeeping down to EM3. The RTCC can be clocked by any of the on-board low-frequency oscillators, and it is capable of providing system wake-up at user defined intervals. A secondary RTC is used by the RF protocol stack for event scheduling, leaving the primary RTCC block available exclusively for application software. 3.5.4 Back-Up Real Time Counter The Back-Up Real Time Counter (BURTC) is a 32-bit counter providing timekeeping in all energy modes, including EM4. The BURTC can be clocked by any of the on-board low-frequency oscillators, and it is capable of providing system wake-up at user defined invervals. 3.5.5 Watchdog Timer (WDOG) The watchdog timer can act both as an independent watchdog or as a watchdog synchronous with the CPU clock. It has windowed monitoring capabilities, and can generate a reset or different interrupts depending on the failure mode of the system. The watchdog can also monitor autonomous systems driven by the Peripheral Reflex System (PRS). 3.6 Communications and Other Digital Peripherals 3.6.1 Universal Synchronous/Asynchronous Receiver/Transmitter (USART) The Universal Synchronous/Asynchronous Receiver/Transmitter is a flexible serial I/O module. It supports full duplex asynchronous UART communication with hardware flow control as well as RS-485, SPI, MicroWire and 3-wire. It can also interface with devices supporting: * ISO7816 SmartCards * IrDA * I2S 3.6.2 Inter-Integrated Circuit Interface (I2C) The I2C module provides an interface between the MCU and a serial I2C bus. It is capable of acting as both a master and a slave and supports multi-master buses. Standard-mode, fast-mode and fast-mode plus speeds are supported, allowing transmission rates from 10 kbit/s up to 1 Mbit/s. Slave arbitration and timeouts are also available, allowing implementation of an SMBus-compliant system. The interface provided to software by the I2C module allows precise timing control of the transmission process and highly automated transfers. Automatic recognition of slave addresses is provided in active and low energy modes. Note that not all instances of I2C are avaliable in all energy modes. 3.6.3 Peripheral Reflex System (PRS) The Peripheral Reflex System provides a communication network between different peripheral modules without software involvement. Peripheral modules producing Reflex signals are called producers. The PRS routes Reflex signals from producers to consumer peripherals which in turn perform actions in response. Edge triggers and other functionality such as simple logic operations (AND, OR, NOT) can be applied by the PRS to the signals. The PRS allows peripherals to act autonomously without waking the MCU core, saving power. silabs.com | Building a more connected world. Rev. 1.0 | 9 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet System Overview 3.7 Security Features 3.7.1 Standard Security Standard Security includes the following features: * Cryptographic Accelerator with Standard Ciphers * True Random Number Generator The Cryptographic Accelerator is a fast and energy-efficient autonomous hardware accelerator for advanced cryptographic ciphers. The standard security devices support AES encryption and decryption with 128/192/256-bit keys, ECC over both GF(P) and GF(2m), SHA-1 and SHA-2 (SHA-224 and SHA-256). Supported block cipher modes of operation for AES include: ECB, CTR, CBC, PCBC, CFB, OFB, GCM, CBC-MAC, GMAC and CCM. The Cryptographic Accelerator accelerates Elliptical Curve Cryptography and supports the NIST recommended curves including P-192, P-224, P-256, K-163, K-233, B-163 and B-233. The cryptographic accelerator supports ECDH (Elliptic Curve Diffie-Hellman) and ECDSA (Elliptic Curve Digital Signing Algorithm). These functions provide a fast and energy efficient solution for public key cryptography key exchange and digital signatures. 3.7.2 True Random Number Generator The True Random Number Generator module is a non-deterministic random number generator based on a full hardware solution. It includes start-up and online health tests for the entropy source as required by NIST SP800-90B and AIS-31. The TRNG is suitable for periodically generating entropy to seed an approved pseudo random number generator. The psuedorandom number generator then provides key generation in a secure system. 3.8 Analog 3.8.1 Analog Comparator (ACMP) The Analog Comparator is used to compare the voltage of two analog inputs, with a digital output indicating which input voltage is higher. Inputs are selected from among internal references and external pins. The tradeoff between response time and current consumption is configurable by software. Two 6-bit reference dividers allow for a wide range of internally-programmable reference sources. The ACMP can also be used to monitor the supply voltage. An interrupt can be generated when the supply falls below or rises above the programmable threshold. 3.8.2 Analog to Digital Converter (ADC) The ADC is an Intermediate architecture combining techniques from both SAR and Delta-Sigma style converters, It has a resolution of up to 12 bits at up to 1 Msps. Hardware oversampling reduces system-level noise over multiple front-end samples. The ADC includes integrated voltage references. Inputs are selectable from a wide range of sources, including pins configurable as either single-ended or differential. 3.9 Reset Management Unit (RMU) The RMU is responsible for handling reset of the EFR32MG21. A wide range of reset sources are available, including several power supply monitors, pin reset, software controlled reset, core lockup reset, and watchdog reset. silabs.com | Building a more connected world. Rev. 1.0 | 10 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet System Overview 3.10 Core and Memory 3.10.1 Processor Core The ARM Cortex-M processor includes a 32-bit RISC processor integrating the following features and tasks in the system: * ARM Cortex-M33 RISC processor achieving 1.50 Dhrystone MIPS/MHz * ARM TrustZone security technology * Embedded Trace Macrocell (ETM) for real-time trace and debug * Up to 1024 kB flash program memory * Up to 96 kB RAM data memory * Configuration and event handling of all modules * 2-pin Serial-Wire debug interface 3.10.2 Memory System Controller (MSC) The Memory System Controller (MSC) is the program memory unit of the microcontroller. The flash memory is readable and writable from both the Cortex-M and DMA. In addition to the main flash array where Program code is normally written the MSC also provides an Information block where additional information such as special user information or flash-lock bits are stored. There is also a read-only page in the information block containing system and device calibration data. Read and write operations are supported in energy modes EM0 Active and EM1 Sleep. 3.10.3 Linked Direct Memory Access Controller (LDMA) The Linked Direct Memory Access (LDMA) controller allows the system to perform memory operations independently of software. This reduces both energy consumption and software workload. The LDMA allows operations to be linked together and staged, enabling sophisticated operations to be implemented. silabs.com | Building a more connected world. Rev. 1.0 | 11 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet System Overview 3.11 Memory Map The EFR32MG21 memory map is shown in the figures below. RAM and flash sizes are for the largest memory configuration. Figure 3.2. EFR32MG21 Memory Map -- Core Peripherals and Code Space silabs.com | Building a more connected world. Rev. 1.0 | 12 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet System Overview 3.12 Configuration Summary The features of the EFR32MG21 are a subset of the feature set described in the device reference manual. The table below describes device specific implementation of the features. Remaining modules support full configuration. Table 3.1. Configuration Summary Module Lowest Energy Mode Configuration TIMER0 EM1 32-bit, 3-channels, +DTI TIMER1 EM1 16-bit, 3-channels, +DTI TIMER2 EM1 16-bit, 3-channels, +DTI USART0 EM1 +IrDA, +I2S, +SmartCard USART1 EM1 +IrDA, +I2S, +SmartCard USART2 EM1 +IrDA, +I2S, +SmartCard I2C0 EM2 I2C1 EM1 silabs.com | Building a more connected world. Rev. 1.0 | 13 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4. Electrical Specifications 4.1 Electrical Characteristics All electrical parameters in all tables are specified under the following conditions, unless stated otherwise: * Typical values are based on TA=25 C and all supplies at 3.0 V, by production test and/or technology characterization. * Radio performance numbers are measured in conducted mode, based on Silicon Laboratories reference designs using output power-specific external RF impedance-matching networks for interfacing to a 50 antenna. * Minimum and maximum values represent the worst conditions across supply voltage, process variation, and operating temperature, unless stated otherwise. 4.1.1 Absolute Maximum Ratings Stresses above those listed below may cause permanent damage to the device. This is a stress rating only and functional operation of the devices at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. For more information on the available quality and reliability data, see the Quality and Reliability Monitor Report at http://www.silabs.com/support/quality/pages/default.aspx. Table 4.1. Absolute Maximum Ratings Parameter Symbol Storage temperature range TSTG Junction temperature TJMAX Voltage on any supply pin VDDMAX Voltage ramp rate on any supply pin VDDRAMPMAX Voltage on HFXO pins Test Condition Min Typ Max Unit -50 -- +150 C -- -- +135 C -0.3 -- 3.8 V -- -- 1.0 V / s VHFXOPIN -0.3 -- 1.2 V DC voltage on any GPIO pin VDIGPIN -0.3 -- VIOVDD + 0.3 V Input RF level on pins RF2G4_IO1 and RF2G4_IO2 PRFMAX2G4 -- -- +10 dBm Absolute voltage on RF pins RF2G4_IOx VMAX2G4 -0.3 -- VPAVDD V -I grade Total current into VDD power IVDDMAX lines Source -- -- 200 mA Total current into VSS ground lines IVSSMAX Sink -- -- 200 mA Current per I/O pin IIOMAX Sink -- -- 50 mA Source -- -- 50 mA Sink -- -- 200 mA Source -- -- 200 mA Current for all I/O pins IIOALLMAX silabs.com | Building a more connected world. Rev. 1.0 | 14 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.2 General Operating Conditions This table specifies the general operating temperature range and supply voltage range for all supplies. The minimum and maximum values of all other tables are specifed over this operating range, unless otherwise noted. Table 4.2. General Operating Conditions Parameter Symbol Test Condition Min Typ Max Unit Operating ambient temperature range TA -I temperature grade 1 -40 -- +125 C DVDD supply voltage VDVDD EM0/1 1.71 3.0 3.8 V EM2/3/42 1.71 3.0 3.8 V AVDD supply voltage VAVDD 1.71 3.0 3.8 V IOVDDx operating supply voltage (All IOVDD pins) VIOVDDx 1.71 3.0 3.8 V PAVDD operating supply voltage VPAVDD 1.71 3.0 3.8 V RFVDD operating supply voltage VRFVDD 1.71 3.0 VPAVDD V DECOUPLE output capacitor3 CDECOUPLE 0.75 1.0 2.75 F HCLK and Core frequency fHCLK MODE = WS1, RAMWSEN = 14 -- -- 80 MHz MODE = WS1, RAMWSEN = 04 -- -- 50 MHz MODE = WS0, RAMWSEN = 04 -- -- 39 MHz PCLK frequency fPCLK -- -- 50 MHz EM01 Group A clock frequency fEM01GRPACLK -- -- 80 MHz HCLK Radio frequency5 fHCLKRADIO 38 38.4 40 MHz Note: 1. The device may operate continuously at the maximum allowable ambient TA rating as long as the absolute maximum TJMAX is not exceeded. For an application with significant power dissipation, the allowable TA may be lower than the maximum TA rating. TA = TJMAX - (THETAJA x PowerDissipation). Refer to the Absolute Maximum Ratings table and the Thermal Characteristics table for TJMAX and THETAJA. 2. The DVDD supply is monitored by the DVDD BOD in EM0/1 and the LE DVDD BOD in EM2/3/4. 3. The system designer should consult the characteristic specs of the capacitor used on DECOUPLE to ensure its capacitance value stays within the specified bounds across temperature and DC bias. 4. Flash wait states are set by the MODE field in the MSC_READCTRL register. RAM wait states are enabled by setting the RAMWSEN bit in the SYSYCFG_DMEM0RAMCTRL register. 5. The recommended radio crystal frequency is 38.4 MHz. Any crystal frequency other than 38.4 is expressly not supported. The minimum and maximum HCLKRADIO frequency in this table represent the design limits, which are much wider than the typical crystal tolerance. silabs.com | Building a more connected world. Rev. 1.0 | 15 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.3 Thermal Characteristics Table 4.3. Thermal Characteristics Parameter Symbol Test Condition Min Typ Max Unit Thermal Resistance Junction THEto Ambient QFN32 (4x4mm) TAJA_QFN32_4X4 Package 2-Layer PCB, Natural Convection1 -- 94.3 -- C/W 4-Layer PCB, Natural Convection1 -- 35.4 -- C/W Thermal Resistance Junction THEto Case QFN32 (4x4mm) TAJC_QFN32_4X4 Package 2-Layer PCB, Natural Convection1 -- 36.3 -- C/W 4-Layer PCB, Natural Convection1 -- 23.5 -- C/W Note: 1. Measured according to JEDEC standard JESD51-2A. Integrated Circuit Thermal Test Method Environmental Conditions - Natural Convection (Still Air). silabs.com | Building a more connected world. Rev. 1.0 | 16 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.4 Current Consumption 4.1.4.1 MCU current consumption at 1.8V Unless otherwise indicated, typical conditions are: AVDD = DVDD = RFVDD = PAVDD = 1.8V. TA = 25 C. Minimum and maximum values in this table represent the worst conditions across process variation at TA = 25 C. Table 4.4. MCU current consumption at 1.8V Parameter Symbol Min Typ Max Unit 80 MHz HFRCO, CPU running Prime from flash -- 50.9 -- A/MHz 80 MHz HFRCO, CPU running while loop from flash -- 45.5 -- A/MHz 80 MHz HFRCO, CPU running CoreMark loop from flash -- 59.7 -- A/MHz 38.4 MHz crystal, CPU running while loop from flash -- 63.6 -- A/MHz 38 MHz HFRCO, CPU running while loop from flash -- 55.5 -- A/MHz 26 MHz HFRCO, CPU running while loop from flash -- 59.1 -- A/MHz 16 MHz HFRCO, CPU running while loop from flash -- 67.0 -- A/MHz 1 MHz HFRCO, CPU running while loop from flash -- 360 -- A/MHz 80 MHz HFRCO -- 28.7 -- A/MHz 38.4 MHz crystal -- 46.7 -- A/MHz 38 MHz HFRCO -- 38.7 -- A/MHz 26 MHz HFRCO -- 42.2 -- A/MHz 16 MHz HFRCO -- 50.0 -- A/MHz 1 MHz HFRCO -- 343 -- A/MHz Full RAM retention and RTC running from LFXO -- 5.0 -- A Full RAM retention and RTC running from LFRCO -- 5.0 -- A 1 bank (16kB) RAM retention and RTC running from LFRCO -- 4.5 -- A Full RAM retention and RTC running from ULFRCO -- 4.7 -- A 1 bank (16kB) RAM retention and RTC running from ULFRCO -- 4.2 -- A Current consumption in EM4 IEM4 mode No BURTC, no LF oscillator -- 0.14 -- A BURTC with LFXO -- 0.51 -- A Consumption during reset IRST Hard pin reset held -- 107 -- A Consumption per retained 16kB RAM bank in EM2 IRAM -- 0.10 -- A Current consumption in EM0 IACTIVE mode with all peripherals disabled1 Current consumption in EM1 IEM1 mode with all peripherals disabled1 Current consumption in EM2 IEM2 mode Current consumption in EM3 IEM3 mode silabs.com | Building a more connected world. Test Condition Rev. 1.0 | 17 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Parameter Symbol Test Condition Min Typ Max Unit Note: 1. The typical EM0/EM1 current measurement includes some current consumed by the security core for periodical housekeeping purposes. This does not include current consumed by user-triggered security operations, such as cryptographic calculations. silabs.com | Building a more connected world. Rev. 1.0 | 18 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.4.2 MCU current consumption at 3.0V Unless otherwise indicated, typical conditions are: AVDD = DVDD = RFVDD = PAVDD = 3.0 V. TA = 25 C. Minimum and maximum values in this table represent the worst conditions across process variation at TA = 25 C. Table 4.5. MCU current consumption at 3.0V Parameter Symbol Min Typ Max Unit 80 MHz HFRCO, CPU running Prime from flash -- 50.9 -- A/MHz 80 MHz HFRCO, CPU running while loop from flash -- 45.6 55.5 A/MHz 80 MHz HFRCO, CPU running CoreMark loop from flash -- 59.8 -- A/MHz 38.4 MHz crystal, CPU running while loop from flash -- 63.8 -- A/MHz 38 MHz HFRCO, CPU running while loop from flash -- 55.6 75.1 A/MHz 26 MHz HFRCO, CPU running while loop from flash -- 59.1 -- A/MHz 16 MHz HFRCO, CPU running while loop from flash -- 67.1 -- A/MHz 1 MHz HFRCO, CPU running while loop from flash -- 362 1018 A/MHz 80 MHz HFRCO -- 28.7 37.6 A/MHz 38.4 MHz crystal -- 46.9 -- A/MHz 38 MHz HFRCO -- 38.7 57.5 A/MHz 26 MHz HFRCO -- 42.2 -- A/MHz 16 MHz HFRCO -- 50.2 -- A/MHz 1 MHz HFRCO -- 345 994 A/MHz Full RAM retention and RTC running from LFXO -- 5.1 -- A Full RAM retention and RTC running from LFRCO -- 5.0 -- A 1 bank (16 kB) RAM retention and RTC running from LFRCO -- 4.5 10.5 A Full RAM retention and RTC running from ULFRCO -- 4.8 11.4 A 1 bank (16 kB) RAM retention and RTC running from ULFRCO -- 4.3 -- A Current consumption in EM4 IEM4 mode No BURTC, no LF oscillator -- 0.21 0.5 A BURTC with LFXO -- 0.61 -- A Consumption during reset IRST Hard pin reset held -- 146 -- A Consumption per retained 16kB RAM bank in EM2 IRAM -- 0.10 -- A Current consumption in EM0 IACTIVE mode with all peripherals disabled1 Current consumption in EM1 IEM1 mode with all peripherals disabled1 Current consumption in EM2 IEM2 mode Current consumption in EM3 IEM3 mode silabs.com | Building a more connected world. Test Condition Rev. 1.0 | 19 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Parameter Symbol Test Condition Min Typ Max Unit Note: 1. The typical EM0/EM1 current measurement includes some current consumed by the security core for periodical housekeeping purposes. This does not include current consumed by user-triggered security operations, such as cryptographic calculations. 4.1.4.3 Radio current consumption at 1.8V RF current consumption measured with MCU in EM1, HCLK = 38.4 MHz, and all MCU peripherals disabled. Unless otherwise indicated, typical conditions are: AVDD = DVDD = IOVDD = RFVDD = PAVDD = 1.8V. TA = 25 C. Minimum and maximum values in this table represent the worst conditions across process variation at TA = 25 C. Table 4.6. Radio current consumption at 1.8V Parameter Symbol Test Condition Current consumption in receive mode, active packet reception IRX_ACTIVE Current consumption in receive mode, listening for packet Current consumption in transmit mode IRX_LISTEN ITX silabs.com | Building a more connected world. Min Typ Max Unit 125 kbit/s, 2GFSK, f = 2.4 GHz -- 9.0 -- mA 500 kbit/s, 2GFSK, f = 2.4 GHz -- 9.1 -- mA 1 Mbit/s, 2GFSK, f = 2.4 GHz -- 8.8 -- mA 2 Mbit/s, 2GFSK, f = 2.4 GHz -- 9.4 -- mA 802.15.4 receiving frame, f = 2.4 GHz -- 9.4 -- mA 125 kbit/s, 2GFSK, f = 2.4 GHz -- 9.0 -- mA 500 kbit/s, 2GFSK, f = 2.4 GHz -- 9.0 -- mA 1 Mbit/s, 2GFSK, f = 2.4 GHz -- 9.0 -- mA 2 Mbit/s, 2GFSK, f = 2.4 GHz -- 9.8 -- mA 802.15.4, f = 2.4 GHz -- 9.2 -- mA f = 2.4 GHz, CW, 0 dBm PA, 0 dBm output power -- 9.3 -- mA f = 2.4 GHz, CW, 10 dBm PA, 0 dBm output power -- 16.6 -- mA f = 2.4 GHz, CW, 10 dBm PA, 10 dBm output power -- 33.8 -- mA Rev. 1.0 | 20 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.4.4 Radio current consumption at 3.0V RF current consumption measured with MCU in EM1, HCLK = 38.4 MHz, and all MCU peripherals disabled. Unless otherwise indicated, typical conditions are: AVDD = DVDD = IOVDD = RFVDD = PAVDD = 3.0V. TA = 25 C. Minimum and maximum values in this table represent the worst conditions across process variation at TA = 25 C. Table 4.7. Radio current consumption at 3.0V Parameter Symbol Test Condition Current consumption in receive mode, active packet reception IRX_ACTIVE Current consumption in receive mode, listening for packet Current consumption in transmit mode IRX_LISTEN ITX silabs.com | Building a more connected world. Min Typ Max Unit 125 kbit/s, 2GFSK, f = 2.4 GHz -- 9.0 -- mA 500 kbit/s, 2GFSK, f = 2.4 GHz -- 9.1 -- mA 1 Mbit/s, 2GFSK, f = 2.4 GHz -- 8.8 -- mA 2 Mbit/s, 2GFSK, f = 2.4 GHz -- 9.4 -- mA 802.15.4 receiving frame, f = 2.4 GHz -- 9.5 -- mA 125 kbit/s, 2GFSK, f = 2.4 GHz -- 9.0 -- mA 500 kbit/s, 2GFSK, f = 2.4 GHz -- 9.0 -- mA 1 Mbit/s, 2GFSK, f = 2.4 GHz -- 9.0 -- mA 2 Mbit/s, 2GFSK, f = 2.4 GHz -- 9.8 -- mA 802.15.4, f = 2.4 GHz -- 9.2 -- mA f = 2.4 GHz, CW, 0 dBm PA, 0 dBm output power -- 10.5 -- mA f = 2.4 GHz, CW, 10 dBm PA, 0 dBm output power -- 16.7 -- mA f = 2.4 GHz, CW, 10 dBm PA, 10 dBm output power -- 34.0 -- mA f = 2.4 GHz, CW, 20 dBm PA, 10 dBm output power, PAVDD = 3.0 V -- 60.8 -- mA f = 2.4 GHz, CW, 20 dBm PA, 20 dBm output power, PAVDD = 3.3 V -- 185 -- mA Rev. 1.0 | 21 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5 2.4 GHz RF Transceiver Characteristics 4.1.5.1 RF Transmitter Characteristics 4.1.5.1.1 RF Transmitter General Characteristics for the 2.4 GHz Band Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.8. RF Transmitter General Characteristics for the 2.4 GHz Band Parameter Symbol RF tuning frequency range FRANGE Maximum TX power 1 POUTMAX Maximum TX power Min Typ Max Unit 2400 -- 2483.5 MHz 20 dBm PA, PAVDD = 3.3V -- +20.2 -- dBm POUTMAX10 10 dBm PA -- +10.5 -- dBm Maximum TX power POUTMAX0 0 dBm PA -- +0.4 -- dBm Minimum active TX Power POUTMIN 20 dBm PA, PAVDD = 3.3 V -- -20.5 -- dBm 10 dBm PA -- -19.3 -- dBm 0 dBm PA -- -23.5 -- dBm 0 dBm PA,-15 dBm < Output Power < -5 dBm -- 1.5 -- dB 0 dBm PA,-5 dBm < Output Power < 0 dBm -- 0.3 -- dB 10 dBm PA, -5 dBm < Output power < 0 dBm -- 1.5 -- dB 10 dBm PA, 0 dBm < output power < 10 dBm -- 1.0 -- dB 20 dBm PA, 0 dBm < Output Power < 5 dBm -- 0.7 -- dB 20 dBm PA, 5 dBm < output power < POUTMAX -- 0.5 -- dB 20 dBm PA Pout = POUTMAX output power with PAVDD voltage swept from 3.0V to 3.8V. -- 0.8 -- dB 10 dbm PA output power with PAVDD voltage swept from 1.8 V to 3.0 V -- 0.1 -- dB 0 dBm PA output power with PAVDD voltage swept from 1.8 V to 3.0 V -- 0.1 -- dB AVDD = 3.3V supply, 20 dBm PA at Pout = POUTMAX, (-40 to +125 C) -- 1.5 -- dB 10 dBm PA at 10 dBm, (-40 to +125 C) -- 0.3 -- dB 0 dBm PA at 0 dBm, (-40 to +125 C) -- 2.1 -- dB Output power step size POUTSTEP Output power variation vs POUTVAR_V PAVDD supply voltage variation, frequency = 2450MHz Output power variation vs temperature, Frequency = 2450MHz POUTVAR_T silabs.com | Building a more connected world. Test Condition Rev. 1.0 | 22 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Parameter Symbol Output power variation vs RF POUTVAR_F frequency Spurious emissions of harmonics in restricted bands per FCC Part 15.205/15.209 Spurious emissions of harmonics in non-restricted bands per FCC Part 15.247/15.35 SPURHRM_FCC_ R SPURHRM_FCC_ NRR silabs.com | Building a more connected world. Test Condition Min Typ Max Unit 20 dBm PA, POUTMAX, PAVDD = 3.3 V. -- 0.2 -- dB 10 dBm PA, 10 dBm -- 0.2 -- dB 0 dBm PA, 0 dBm -- 0.1 -- dB Continuous transmission of CW carrier. Pout = POUTMAX. PAVDD = 3.3V. Test Frequency = 2450MHz. -- -47 -- dBm Continuous transmission of CW carrier, Pout = 10 dBm, Test Frequency = 2450 MHz. -- -47 -- dBm Continuous transmission of CW carrier, Pout = POUTMAX, PAVDD = 3.3V, Test Frequency = 2450MHz. -- -26 -- dBc Continuous transmission of CW carrier. Pout = 10 dBm. Test Frequency = 2450 MHz. -- -26 -- dBc Rev. 1.0 | 23 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Parameter Symbol Test Condition Spurious emissions out-ofband (above 2.483 GHz or below 2.4 GHz) in restricted bands, per FCC part 15.205/15.209 SPUROOB_FCC_ R Spurious emissions per ETSI SPURETSI440 EN300.440 silabs.com | Building a more connected world. Min Typ Max Unit Restricted bands 30-88 MHz, Continuous transmission of CW carrier, 20 dBm PA, Pout = POUTMAX, PAVDD = 3.3V. Test Frequency = 2450MHz. -- -47 -- dBm Restricted bands 88 - 216 MHz, Continuous transmission of CW carrier, 20 dBm PA, Pout = POUTMAX, PAVDD = 3.3V. Test Frequency = 2450MHz. -- -47 -- dBm Restricted bands 216 - 960 MHz, Continuous transmission of CW carrier, 20 dBm PA Pout = POUTMAX, PAVDD = 3.3V. Test Frequency = 2450MHz. -- -47 -- dBm Restricted bands >960 MHz, Continuous transmission of CW carrier, 20 dBm PA, Pout = POUTMAX, PAVDD = 3.3V, Test Frequency = 2450MHz. -- -47 -- dBm Restricted bands 30-88 MHz, Continuous transmission of CW carrier, Pout = 10 dBm, Test Frequency = 2450 MHz -- -47 -- dBm Restricted bands 88 - 216 MHz, Continuous transmission of CW carrier, Pout = 10 dBm, Test Frequency = 2450 MHz -- -47 -- dBm Restricted bands 216 - 960 MHz, Continuous transmission of CW carrier, Pout = 10 dBm, Test Frequency = 2450 MHz -- -47 -- dBm Restricted bands > 960 MHz, Continuous transmission of CW carrier, Pout = 10 dBm, Test Frequency = 2450 MHz -- -47 -- dBm 1G-14G, Pout = 10 dBm, Test Frequency = 2450 MHz -- -36 -- dBm 47-74 MHz,87.5-108 MHz, 174-230 MHz, 470-862 MHz, Pout = 10 dBm, Test Frequency = 2450 MHz -- -56 -- dBm 25-1000 MHz, excluding above frequencies. Pout = 10 dBm, Test Frequency = 2450 MHz -- -42 -- dBm 1G-12.75 GHz, excluding bands listed above, Pout = 10 dBm, Test Frequency = 2450MHz. -- -50 -- dBm Rev. 1.0 | 24 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Parameter Symbol Spurious emissions out-ofSPUROOB_FCC_ band in non-restricted bands NR per FCC Part 15.247 Spurious emissions out-ofband, per ETSI 300.328 SPURETSI328 Test Condition Min Typ Max Unit Frequencies above 2.483 GHz or below 2.4 GHz, continuous transmission CW carrier, 20 dBm PA, Pout = POUTMAX, PAVDD = 3.3 V,Test Frequency = 2450 MHz -- -26 -- dBc Frequencies above 2.483 GHz or below 2.4 GHz, continuous transmission CW carrier, Pout = 10 dBm, Test Frequency = 2450 MHz -- -26 -- dBc [2400-2BW to 2400-BW], [2483.5+BW to 2483.5+2BW], Pout = 10 dBm, Test Frequency = 2450 MHz -- -26 -- dBm [2400-BW to 2400], [2483.5 to 2483.5+BW] Pout = 10 dBm, Test Frequency = 2450MHz. -- -16 -- dB Note: 1. Supported transmit power levels are determined by the ordering part number (OPN). Transmit power ratings for all devices covered in this data sheet can be found in the Max TX Power column of the Ordering Information Table. silabs.com | Building a more connected world. Rev. 1.0 | 25 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.1.2 RF Transmitter Characteristics for 802.15.4 DSSS-OQPSK in the 2.4 GHz Band Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.9. RF Transmitter Characteristics for 802.15.4 DSSS-OQPSK in the 2.4 GHz Band Parameter Symbol Test Condition Error vector magnitude per 802.15.4-2011 EVM Power spectral density limit PSDLIMIT Occupied channel bandwidth OCPETSI328 per ETSI EN300.328 silabs.com | Building a more connected world. Min Typ Max Unit Average across frequency, signal is DSSS-OQPSK reference packet, PAVDD = 3.3 V, Pout = POUTMAX -- 2.7 -- % rms Average across frequency, signal is DSSS-OQPSK reference packet, Pout = 10 dBm -- 2.7 -- % rms Average across frequency, signal is DSSS-OQPSK reference packet, Pout = 0 dBm -- 2.8 -- % rms Relative, at carrier 3.5 MHz, PAVDD - 3.3 V, Pout = POUTMAX -- -50.3 -- dBc/ 100kHz Relative, at carrier 3.5 MHz, Pout = 10 dBm -- -50.7 -- dBc/ 100kHz Relative, at carrier 3.5 MHz, Pout = 0 dBm -- -50.7 -- dBc/ 100kHz Absolute, at carrier 3.5 MHz, PAVDD = 3.3 V, Pout = POUTMAX -- -38.8 -- dBm/ 100kHz Absolute, at carrier 3.5 MHz, Pout = 10 dBm -- -49 -- dBm/ 100kHz Absolute, at carrier 3.5 MHz, Pout = 0 dBm -- -58.9 -- dBm/ 100kHz Per FCC part 15.247, PAVDD = 3.3 V, Pout = POUTMAX -- +5.6 -- dBm/ 3kHz Per FCC part 15.247, Pout = 10 dBm -- -4.4 -- dBm/ 3kHz Per FCC part 15.247, Pout = 0 dBm -- -14.2 -- dBm/ 3kHz ETSI 300.328 Pout = 10 dBm -- +8.1 -- dBm ETSI 300.328 Pout = 0 dbm -- -1.9 -- dBm 99% BW at highest and lowest channels in band, Pout = 10 dBm -- 2.3 -- MHz 99% BW at highest and lowest channels in band, Pout = 0 dBm -- 2.2 -- MHz Rev. 1.0 | 26 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.1.3 RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 1 Mbps Data Rate Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.10. RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 1 Mbps Data Rate Parameter Symbol Test Condition Transmit 6 dB bandwidth TXBW Power spectral density limit PSDLIMIT Occupied channel bandwidth OCPETSI328 per ETSI EN300.328 In-band spurious emissions, with allowed exceptions1 SPURINB Min Typ Max Unit PAVDD = 3.3 V, Pout = POUTMAX -- 635.1 -- kHz Pout = 10 dBm -- 672.9 -- kHz Pout = 0 dBm -- 646.5 -- kHz PAVDD = 3.3 V, Pout = POUTMAX, Per FCC part 15.247 -- +6.4 -- dBm/ 3kHz Pout = 10 dBm, Per FCC part 15.247 at 10 dBm -- -3.7 -- dBm/ 3kHz Pout = 0 dBm, Per FCC part 15.247 at 0 dBm -- -13.6 -- dBm/ 3kHz Per ETSI 300.328 at 10 dBm/1 MHz -- +10.2 -- dBm Pout = 10 dBm 99% BW at highest and lowest channels in band -- 1.1 -- MHz Pout = 0 dBm 99% BW at highest and lowest channels in band -- 1.1 -- MHz PAVDD = 3.3 V, Pout = POUTMAX, Inband spurs at 2 MHz -- -26.3 -- dBm Pout = 10 dbm, Inband spurs at 2 MHz -- -36.4 -- dBm Pout = 0 dbm, Inband spurs at 2 MHz -- -46.3 -- dBm PAVDD = 3.3 V, Pout = POUTMAX Inband spurs at 3 MHz -- -20 -- dBm Pout = 10 dBm Inband spurs at 3 MHz -- -41.9 -- dBm Pout = 0dbm Inband spurs at 3 MHz -- -51.5 -- dBm Note: 1. Per Bluetooth Core_5.1, Vol.6 Part A, Section 3.2.2, exceptions are allowed in up to three bands of 1 MHz width, centered on a frequency which is an integer multiple of 1 MHz. These exceptions shall have an absolute value of -20 dBm or less. silabs.com | Building a more connected world. Rev. 1.0 | 27 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.1.4 RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 2 Mbps Data Rate Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.11. RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 2 Mbps Data Rate Parameter Symbol Test Condition Transmit 6 dB bandwidth TXBW Power spectral density limit PSDLIMIT Occupied channel bandwidth OCPETSI328 per ETSI EN300.328 In-band spurious emissions, with allowed exceptions1 SPURINB Min Typ Max Unit PAVDD = 3.3 V, Pout = POUTMAX -- 1238.6 -- kHz Pout = 10 dBm -- 1182.5 -- kHz Pout = 0 dBm -- 1249.7 -- kHz PAVDD = 3.3 V, Pout = POUTMAX, Per FCC part 15.247 -- +3.7 -- dBm/ 3kHz Pout = 10 dBm, Per FCC part 15.247 at 10 dBm -- -6.4 -- dBm/ 3kHz Pout = 0 dBm, Per FCC part 15.247 at 0 dBm -- -16.2 -- dBm/ 3kHz Per ETSI 300.328 at 10 dBm/1 MHz -- +9.0 -- dBm Pout = 10 dBm 99% BW at highest and lowest channels in band -- 2.1 -- MHz Pout = 0 dBm 99% BW at highest and lowest channels in band -- 2.1 -- MHz PAVDD = 3.3 V Pout = POUTMAX, Inband spurs at 2 MHz -- -31.7 -- dBm Pout = 10 dBm, Inband spurs at 4 MHz -- -41.9 -- dBm Pout = 0 dBm, Inband spurs at 4 MHz -- -51.7 -- dBm PAVDD = 3.3 V Pout = POUTMAX Inband spurs at 6 MHz -- -35.7 -- dBm Pout = 10 dBm Inband spurs at 6 MHz -- -46.0 -- dBm Pout = 0 dbm Inband spurs at 6 MHz -- -55.7 -- dBm Note: 1. Per Bluetooth Core_5.1, Vol.6 Part A, Section 3.2.2, exceptions are allowed in up to three bands of 1 MHz width, centered on a frequency which is an integer multiple of 1 MHz. These exceptions shall have an absolute value of -20 dBm or less. silabs.com | Building a more connected world. Rev. 1.0 | 28 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.1.5 RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 500 kbps Data Rate Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.12. RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 500 kbps Data Rate Parameter Symbol Test Condition Transmit 6 dB bandwidth TXBW Power spectral density limit PSDLIMIT Occupied channel bandwidth OCPETSI328 per ETSI EN300.328 In-band spurious emissions, with allowed exceptions1 SPURINB Min Typ Max Unit PAVDD = 3.3 V, Pout = POUTMAX -- 770.9 -- kHz Pout = 10 dBm -- 760.1 -- kHz Pout = 0 dBm -- 775.1 -- kHz PAVDD = 3.3 V, Pout = POUTMAX, Per FCC part 15.247 -- +5.4 -- dBm/ 3kHz Pout = 10 dBm, Per FCC part 15.247 at 10 dBm -- -4.6 -- dBm/ 3kHz Pout = 0 dBm, Per FCC part 15.247 at 0 dBm -- -14.4 -- dBm/ 3kHz Per ETSI 300.328 at 10 dBm/1 MHz -- +10.2 -- dBm Pout = 10 dBm 99% BW at highest and lowest channels in band -- 1.1 -- MHz Pout = 0 dBm 99% BW at highest and lowest channels in band -- 1.1 -- MHz Pout = 10 dbm, Inband spurs at 2 MHz -- -38.3 -- dBm Pout = 0 dbm, Inband spurs at 2 MHz -- -47.6 -- dBm PAVDD = 3.3 V, Pout = POUTMAX Inband spurs at 3 MHz -- -20 -- dBm Pout = 10 dBm Inband spurs at 3 MHz -- -42.3 -- dBm Pout = 0dbm Inband spurs at 3 MHz -- -51.8 -- dBm Note: 1. Per Bluetooth Core_5.1, Vol.6 Part A, Section 3.2.2, exceptions are allowed in up to three bands of 1 MHz width, centered on a frequency which is an integer multiple of 1 MHz. These exceptions shall have an absolute value of -20 dBm or less. silabs.com | Building a more connected world. Rev. 1.0 | 29 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.1.6 RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 125 kbps Data Rate Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.13. RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 125 kbps Data Rate Parameter Symbol Test Condition Transmit 6 dB bandwidth TXBW Power spectral density limit PSDLIMIT Occupied channel bandwidth OCPETSI328 per ETSI EN300.328 In-band spurious emissions, with allowed exceptions1 SPURINB Min Typ Max Unit PAVDD = 3.3 V, Pout = POUTMAX -- 609.7 -- kHz Pout = 10 dBm -- 619.3 -- kHz Pout = 0 dBm -- 617.4 -- kHz PAVDD = 3.3 V, Pout = POUTMAX, Per FCC part 15.247 -- +14.6 -- dBm/ 3kHz Pout = 10 dBm, Per FCC part 15.247 at 10 dBm -- +4.5 -- dBm/ 3kHz Pout = 0 dBm, Per FCC part 15.247 at 0 dBm -- -5.3 -- dBm/ 3kHz Per ETSI 300.328 at 10 dBm/1 MHz -- +10.1 -- dBm Pout = 10 dBm 99% BW at highest and lowest channels in band -- 1.1 -- MHz Pout = 0 dBm 99% BW at highest and lowest channels in band -- 1.1 -- MHz PAVDD = 3.3 V, Pout = POUTMAX, Inband spurs at 2 MHz -- -27.7 -- dBm Pout = 10 dbm, Inband spurs at 2 MHz -- -38.5 -- dBm Pout = 0 dbm, Inband spurs at 2 MHz -- -47.8 -- dBm PAVDD = 3.3 V, Pout = POUTMAX Inband spurs at 3 MHz -- -20 -- dBm Pout = 10 dBm Inband spurs at 3 MHz -- -42.4 -- dBm Pout = 0dbm Inband spurs at 3 MHz -- -51.8 -- dBm Note: 1. Per Bluetooth Core_5.1, Vol.6 Part A, Section 3.2.2, exceptions are allowed in up to three bands of 1 MHz width, centered on a frequency which is an integer multiple of 1 MHz. These exceptions shall have an absolute value of -20 dBm or less. silabs.com | Building a more connected world. Rev. 1.0 | 30 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.2 RF Receiver Characteristics 4.1.5.2.1 RF Receiver General Characteristics for the 2.4 GHz Band Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.14. RF Receiver General Characteristics for the 2.4 GHz Band Parameter Symbol RF tuning frequency range FRANGE Receive mode maximum spurious emission SPURRX Max spurious emissions dur- SPURRX_FCC ing active receive mode, per FCC Part 15.109(a) silabs.com | Building a more connected world. Test Condition Min Typ Max Unit 2400 -- 2483.5 MHz 30 MHz to 1 GHz -- -54.8 -- dBm 1 GHz to 12 GHz -- -57.1 -- dBm 216 MHz to 960 MHz, conducted measurement -- -54.8 -- dBm Above 960 MHz, conducted measurement. -- -77.3 -- dBm Rev. 1.0 | 31 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.2.2 RF Receiver Characteristics for 802.15.4 DSSS-OQPSK in the 2.4 GHz Band Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.15. RF Receiver Characteristics for 802.15.4 DSSS-OQPSK in the 2.4 GHz Band Parameter Symbol Test Condition Min Typ Max Unit Max usable receiver input level, 1% PER SAT Signal is reference signal1, packet length is 20 octets -- 10 -- dBm Sensitivity, 1% PER SENS Signal is reference signal, packet length is 20 octets -- -104.5 -- dBm Co-channel interferer rejection, 1% PER CCR Desired signal 3 dB above sensitivity limit -- -0.2 -- dB Adjacent channel rejection, ACRREF1 Interferer is reference signal, 1% PER, desired is reference signal at 3 dB above reference sensitivity level2 Interferer is reference signal at +1 channel spacing -- 39.9 -- dB Interferer is reference signal at -1 channel spacing -- 39.2 -- dB Alternate channel rejection, ACRREF2 interferer is reference signal, 1% PER, desired is reference signal at 3 dB above reference sensitivity level2 Interferer is reference signal at +2 channel spacing -- 51.1 -- dB Interferer is reference signal at -2 channel spacing -- 51.6 -- dB Image rejection, 1% PER, IR desired is reference signal at 3 dB above reference sensitivity level2 Interferer is CW in image band3 -- 43.5 -- dB Blocking rejection of all other BLOCK channels, 1% PER, desired is reference signal at 3 dB above reference sensitivity level2, interferer is reference signal Interferer frequency < desired frequency -3 channel spacing -- 57.6 -- dB Interferer frequency > desired frequency +3 channel spacing -- 57.5 -- dB RSSI resolution RSSIRES -100 dBm to +5 dBm -- 0.25 -- dB RSSI accuracy in the linear region as defined by 802.15.4-2003 RSSILIN -- +/-6 -- dB Note: 1. Reference signal is defined as O-QPSK DSSS per 802.15.4, Frequency range = 2400-2483.5 MHz, Symbol rate = 62.5 ksymbols/s. 2. Reference sensitivity level is -85 dBm. 3. Due to low-IF frequency, there is some overlap of adjacent channel and image channel bands. Adjacent channel CW blocker tests place the Interferer center frequency at the Desired frequency 5 MHz on the channel raster, whereas the image rejection test places the CW interferer near the image frequency of the Desired signal carrier, regardless of the channel raster. silabs.com | Building a more connected world. Rev. 1.0 | 32 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.2.3 RF Receiver Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 1 Mbps Data Rate Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.16. RF Receiver Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 1 Mbps Data Rate Parameter Symbol Test Condition Min Typ Max Unit Max usable receiver input level SAT Signal is reference signal, packet length is 37 bytes1 -- 10 -- dBm Sensitivity SENS Signal is reference signal1 -- -97.5 -- dBm With non-ideal signals2 1 -- -97.1 -- dBm Signal to co-channel interfer- C/ICC er (see notes)1 3 -- +6.6 -- dB N 1 Adjacent channel selectivity Interferer is reference signal at +1 MHz offset1 4 3 5 -- -8.3 -- dB Interferer is reference signal at -1 MHz offset1 4 3 5 -- -8.7 -- dB Interferer is reference signal at +2 MHz offset1 4 3 5 -- -42.1 -- dB Interferer is reference signal at -2 MHz offset1 4 3 5 -- -48.9 -- dB Interferer is reference signal at +3 MHz offset1 4 3 5 -- -42.4 -- dB Interferer is reference signal at -3 MHz offset1 4 3 5 -- -54.8 -- dB N 2 Alternate channel selectivity N 3 Alternate channel selectivity C/I1 C/I2 C/I3 Selectivity to image frequency C/IIM Interferer is reference signal at image frequency with 1 MHz precision1 5 -- -42.1 -- dB Selectivity to image frequency 1 MHz C/IIM_1 Interferer is reference signal at image frequency +1 MHz with 1 MHz precision1 5 -- -42.4 -- dB Interferer is reference signal at image frequency -1 MHz with 1 MHz precision1 5 -- -8.3 -- dB n = 36 -- -23 -- dBm Intermodulation performance IM Note: 1. 0.1% Bit Error Rate. 2. With non-ideal signals as specified in Bluetooth Test Specification RF-PHY.TS.5.0.1 section 4.7.1 3. Desired signal -67 dBm. 4. Desired frequency 2402 MHz Fc 2480 MHz. 5. With allowed exceptions. 6. As specified in Bluetooth Core specification version 5.1, Vol 6, Part A, Section 4.4 silabs.com | Building a more connected world. Rev. 1.0 | 33 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.2.4 RF Receiver Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 2 Mbps Data Rate Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.17. RF Receiver Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 2 Mbps Data Rate Parameter Symbol Test Condition Min Typ Max Unit Max usable receiver input level SAT Signal is reference signal, packet length is 37 bytes1 -- 10 -- dBm Sensitivity SENS Signal is reference signal1 -- -94.4 -- dBm With non-ideal signals2 1 -- -94.3 -- dBm Signal to co-channel interfer- C/ICC er (see notes)1 3 -- +6.0 -- dB N 1 Adjacent channel selectivity Interferer is reference signal at +2 MHz offset1 4 3 5 -- -8.0 -- dB Interferer is reference signal at -2 MHz offset1 4 3 5 -- -8.8 -- dB Interferer is reference signal at +4 MHz offset1 4 3 5 -- -42.2 -- dB Interferer is reference signal at -4 MHz offset1 4 3 5 -- -50.3 -- dB Interferer is reference signal at +6 MHz offset1 4 3 5 -- -54.4 -- dB Interferer is reference signal at -6 MHz offset1 4 3 5 -- -55.4 -- dB N 2 Alternate channel selectivity N 3 Alternate channel selectivity C/I1 C/I2 C/I3 Selectivity to image frequency C/IIM Interferer is reference signal at image frequency with 1 MHz precision1 5 -- -8.0 -- dB Selectivity to image frequency 1 MHz C/IIM_1 Interferer is reference signal at image frequency +2 MHz with 1 MHz precision1 5 -- -42.2 -- dB Interferer is reference signal at image frequency -2 MHz with 1 MHz precision1 5 -- +6.0 -- dB n = 36 -- -22.3 -- dBm Intermodulation performance IM Note: 1. 0.1% Bit Error Rate. 2. With non-ideal signals as specified in Bluetooth Test Specification RF-PHY.TS.5.0.1 section 4.7.1 3. Desired signal -67 dBm. 4. Desired frequency 2402 MHz Fc 2480 MHz. 5. With allowed exceptions. 6. As specified in Bluetooth Core specification version 5.1, Vol 6, Part A, Section 4.4 silabs.com | Building a more connected world. Rev. 1.0 | 34 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.2.5 RF Receiver Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 500 kbps Data Rate Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.18. RF Receiver Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 500 kbps Data Rate Parameter Symbol Test Condition Min Typ Max Unit Max usable receiver input level SAT Signal is reference signal, packet length is 37 bytes1 -- 10 -- dBm Sensitivity SENS Signal is reference signal1 -- -100.6 -- dBm With non-ideal signals2 1 -- -100.0 -- dBm Signal to co-channel interfer- C/ICC er (see notes)1 3 -- +2.1 -- dB N 1 Adjacent channel selectivity Interferer is reference signal at +1 MHz offset1 4 3 5 -- -9.0 -- dB Interferer is reference signal at -1 MHz offset1 4 3 5 -- -9.5 -- dB Interferer is reference signal at +2 MHz offset1 4 3 5 -- -44.4 -- dB Interferer is reference signal at -2 MHz offset1 4 3 5 -- -51.9 -- dB Interferer is reference signal at +3 MHz offset1 4 3 5 -- -44.3 -- dB Interferer is reference signal at -3 MHz offset1 4 3 5 -- -58.3 -- dB N 2 Alternate channel selectivity N 3 Alternate channel selectivity C/I1 C/I2 C/I3 Selectivity to image frequency C/IIM Interferer is reference signal at image frequency with 1 MHz precision1 5 -- -44.4 -- dB Selectivity to image frequency 1 MHz C/IIM_1 Interferer is reference signal at image frequency +1 MHz with 1 MHz precision1 5 -- -44.3 -- dB Interferer is reference signal at image frequency -1 MHz with 1 MHz precision1 5 -- -9.0 -- dB Note: 1. 0.1% Bit Error Rate. 2. With non-ideal signals as specified in Bluetooth Test Specification RF-PHY.TS.5.0.1 section 4.7.1 3. Desired signal -72 dBm. 4. Desired frequency 2402 MHz Fc 2480 MHz. 5. With allowed exceptions. silabs.com | Building a more connected world. Rev. 1.0 | 35 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.5.2.6 RF Receiver Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 125 kbps Data Rate Unless otherwise indicated, typical conditions are: TA = 25 C, PAVDD = 3.0V, AVDD = DVDD = IOVDD = RFVDD = PAVDD. Crystal frequency=38.4 MHz. RF center frequency 2.45 GHz. Antenna port 2. Table 4.19. RF Receiver Characteristics for Bluetooth Low Energy in the 2.4 GHz Band 125 kbps Data Rate Parameter Symbol Test Condition Min Typ Max Unit Max usable receiver input level SAT Signal is reference signal, packet length is 37 bytes1 -- 10 -- dBm Sensitivity SENS Signal is reference signal1 -- -104.9 -- dBm With non-ideal signals2 1 -- -104.6 -- dBm Signal to co-channel interfer- C/ICC er (see notes)1 3 -- +0.8 -- dB N 1 Adjacent channel selectivity Interferer is reference signal at +1 MHz offset1 4 3 5 -- -13.1 -- dB Interferer is reference signal at -1 MHz offset1 4 3 5 -- -13.6 -- dB Interferer is reference signal at +2 MHz offset1 4 3 5 -- -49.5 -- dB Interferer is reference signal at -2 MHz offset1 4 3 5 -- -56.9 -- dB Interferer is reference signal at +3 MHz offset1 4 3 5 -- -47.0 -- dB Interferer is reference signal at -3 MHz offset1 4 3 5 -- -63.1 -- dB N 2 Alternate channel selectivity N 3 Alternate channel selectivity C/I1 C/I2 C/I3 Selectivity to image frequency C/IIM Interferer is reference signal at image frequency with 1 MHz precision1 5 -- -49.5 -- dB Selectivity to image frequency 1 MHz C/IIM_1 Interferer is reference signal at image frequency +1 MHz with 1 MHz precision1 5 -- -47.0 -- dB Interferer is reference signal at image frequency -1 MHz with 1 MHz precision1 5 -- -13.1 -- dB Note: 1. 0.1% Bit Error Rate. 2. With non-ideal signals as specified in Bluetooth Test Specification RF-PHY.TS.5.0.1 section 4.7.1 3. Desired signal -79 dBm. 4. Desired frequency 2402 MHz Fc 2480 MHz. 5. With allowed exceptions. silabs.com | Building a more connected world. Rev. 1.0 | 36 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.6 Flash Characteristics Table 4.20. Flash Characteristics Parameter Symbol Test Condition Min Typ Max Unit Flash erase cycles before failure1 ECFLASH TA 125 C 10,000 -- -- cycles Flash data retention1 RETFLASH TA 125 C 10 -- -- years Program Time tPROG one word (32-bits) 40.2 44.0 47.9 uSec average per word over 128 words 9.97 10.9 11.9 uSec Page Erase Time2 tPERASE 11.6 12.7 13.9 ms Mass Erase Time3 4 tMERASE 11.7 12.8 14.1 ms Page Erase Current IERASE TA = 25 C -- -- 2.13 mA Program Current IWRITE TA = 25 C -- -- 2.73 mA Mass Erase Current IMERASE TA = 25 C -- -- 2.30 mA Flash Supply voltage during write or erase VFLASH 1.71 -- 3.8 V Note: 1. Flash data retention information is published in the Quarterly Quality and Reliability Report. 2. Page Erase time is measured from setting the ERASEPAGE bit in the MSC_WRITECMD register until the BUSY bit in the MSCSTATUS register is cleared to 0. Internal set-up and hold times are included. 3. Mass Erase is issued by the CPU and erases all of User space. 4. Mass Erase time is measured from setting the ERASEMAIN0 bit in the MSC_WRITECMD register until the BUSY bit in the MSCSTATUS register is cleared to 0. Internal set-up and hold times are included. silabs.com | Building a more connected world. Rev. 1.0 | 37 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.7 Wake Up, Entry, and Exit times Unless otherwise specified, these times are measured using the HFRCO at 19 MHz. Table 4.21. Wake Up, Entry, and Exit times Parameter Symbol Test Condition WakeupTime from EM1 tEM1_WU WakeupTime from EM2 WakupTime from EM3 tEM2_WU tEM3_WU Min Typ Max Unit Code execution from flash -- 3 -- AHB Clocks Code execution from RAM -- 1.43 -- s Code execution from flash -- 12.2 -- s Code execution from RAM -- 3.92 -- s Code execution from flash @ 80 MHz -- 9.00 -- s Code execution from RAM @ 80 MHz -- 2.87 -- s Code execution from flash -- 12.2 -- s Code execution from RAM -- 3.92 -- s Code execution from flash @ 80 MHz -- 9.00 -- s Code execution from RAM @ 80 MHz -- 2.87 -- s WakeupTime from EM4 tEM4_WU Code execution from Flash -- 17.8 -- ms Entry time to EM1 tEM1_ENT Code execution from flash -- 1.52 -- s Entry time to EM2 tEM2_ENT Code execution from flash -- 74.0 -- s Entry time to EM3 tEM3_ENT Code execution from flash -- 74.0 -- s Entry time to EM4 tEM4_ENT Code execution from flash -- 84.1 -- s silabs.com | Building a more connected world. Rev. 1.0 | 38 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.8 Oscillators 4.1.8.1 High Frequency Crystal Oscillator Unless otherwise indicated, typical conditions are: AVDD = DVDD = RFVDD = 3.0 V. TA = 25 C. Minimum and maximum values in this table represent the worst conditions across process variation, operating supply voltage range, and operating temperature range. Table 4.22. High Frequency Crystal Oscillator Parameter Symbol Test Condition Min Typ Max Unit Crystal Frequency FHFXO see note1 2 -- 38.4 -- MHz Supported crystal equivalent series resistance (ESR) ESRHFXO_38M4 38.4 MHz, CL = 10 pF3 -- -- 40 Supported range of crystal load capacitance CHFXO_LC 38.4 MHz, ESR = 404 -- 10 -- pF Supply Current IHFXO -- 500 -- A Startup Time TSTARTUP -- 160 -- s On-chip tuning cap step size5 SSHFXO -- 0.04 -- pF 38.4 MHz, ESR=40 Ohm, CL=10 pF Note: 1. The BLE radio requires a 38.4 MHz crystal with a tolerance of 50 ppm over temperature and aging. Please use the recommended crystal. 2. The ZigBee radio requires a 38.4 MHz crystal with a tolerance of 40 ppm over temperature and aging. Please use the recommended crystal. 3. The crystal should have a maximum ESR less than or equal to this maximum rating. 4. It is recommended to use a crystal with a 10 pF load capacitance rating. Only crystals with a 10 pF load cap rating have been characterized for RF use. 5. The tuning step size is the effective step size when incrementing one of the tuning capacitors by one count. The step size for the each of the indivdual tuning capacitors is twice this value. silabs.com | Building a more connected world. Rev. 1.0 | 39 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.8.2 Low Frequency Crystal Oscillator Table 4.23. Low Frequency Crystal Oscillator Parameter Symbol Crystal Frequency FLFXO Test Condition Min Typ Max Unit -- 32.768 -- kHz Supported Crystal equivalent ESRLFXO series resistance (ESR) GAIN=0 -- -- 80 k GAN=1 to 3 -- -- 100 k Supported range of crystal load capacitance 1 GAIN = 0 4 -- 6 pF GAIN = 1 6 -- 10 pF GAIN = 2 10 -- 12.5 pF GAIN = 32 12.5 -- 18 pF CLFXO_CL Current consumption ICL12p5 ESR = 70 kOhm, CL = 12.5 pF, GAIN3 = 2, AGC 4 = 1 -- 357 -- nA Startup Time TSTARTUP ESR = 70k Ohm, CL = 7 pF, GAIN3 = 1, AGC 4 = 1 -- 63 -- ms On-chip tuning cap step size SSLFXO -- 0.26 -- pF On-chip tuning capacitor val- CLFXO_MIN ue at minimum setting5 CAPTUNE = 0 -- 4 -- pF On-chip tuning capacitor val- CLFXO_MAX ue at maximum setting5 CAPTUNE = 0x4F -- 24.5 -- pF Note: 1. Total load capacitance seen by the crystal 2. Crystals with a load capacitance of greater than 12 pF require external load capacitors. 3. In LFXO_CAL Register 4. In LFXO_CFG Register 5. The effective load capacitance seen by the crystal will be CLFXO/2. This is because each XTAL pin has a tuning cap and the two caps will be seen in series by the crystal silabs.com | Building a more connected world. Rev. 1.0 | 40 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.8.3 High Frequency RC Oscillator (HFRCO) Unless otherwise indicated, typical conditions are: AVDD = DVDD = 3.0 V. TA = 25 C. Minimum and maximum values in this table represent the worst conditions across process variation, operating supply voltage range, and operating temperature range. Table 4.24. High Frequency RC Oscillator (HFRCO) Parameter Symbol Test Condition Min Typ Max Unit Frequency Accuracy FHFRCO_ACC For all production calibrated frequncies -3 -- +3 % Current consumption on all supplies 1 IHFRCO FHFRCO = 1 MHz -- 27 -- A FHFRCO = 2 MHz -- 27 -- A FHFRCO = 4 MHz -- 27 -- A FHFRCO = 7 MHz -- 59 -- A FHFRCO = 13 MHz -- 77 -- A FHFRCO = 16 MHz -- 87 -- A FHFRCO = 19 MHz -- 90 -- A FHFRCO = 26 MHz -- 116 -- A FHFRCO = 32 MHz -- 139 -- A FHFRCO = 38 MHz2 -- 170 -- A FHFRCO = 40 MHz3 -- 172 -- A FHFRCO = 48 MHz2 -- 207 -- A FHFRCO = 56 MHz2 -- 228 -- A FHFRCO = 64 MHz2 -- 269 -- A FHFRCO = 80 MHz2 -- 285 -- A Clock out current for HFRCODPLL4 ICLKOUT_HFRCOD FORECEEN bit of HFRCO0_CTRL = 1 -- 3.0 -- A/MHz PLL Clock Out current for HFRCOEM234 ICLKOUT_HFRCOE FORECEEN bit of HFRCOEM23_CTRL = 1 M23 -- 1.6 -- A/MHz Coarse trim step Size (% of period) SSHFRCO_COARS Step size measured at coarse trim mid-scale. (Fine trim also set to mid scale.) -- 0.64 -- % E Fine trim step Size (% of period) SSHFRCO_FINE Step size measured at fine trim mid-scale. (Coarse trim also set to mid scale.) -- 0.1 -- % Period jitter PJHFRCO 19 MHz -- 0.04 -- % RMS Startup Time5 TSTARTUP FREQRANGE = 0 to 7 -- 3.2 -- s FREQRANGE = 8 to 15 -- 1.2 -- s silabs.com | Building a more connected world. Rev. 1.0 | 41 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Parameter Symbol Test Condition Min Typ Max Unit Band Frequency Limits6 fHFRCO_BAND FREQRANGE=0 3.71 -- 5.24 MHz FREQRANGE=1 4.39 -- 6.26 MHz FREQRANGE=2 5.25 -- 7.55 MHz FREQRANGE=3 6.22 -- 9.01 MHz FREQRANGE=4 7.88 -- 11.6 MHz FREQRANGE=5 9.9 -- 14.6 MHz FREQRANGE=6 11.5 -- 17.0 MHz FREQRANGE=7 14.1 -- 20.9 MHz FREQRANGE=8 16.4 -- 24.7 MHz FREQRANGE=9 19.8 -- 30.4 MHz FREQRANGE=10 22.7 -- 34.9 MHz FREQRANGE=11 28.6 -- 44.4 MHz FREQRANGE=12 33.0 -- 51.0 MHz FREQRANGE=13 42.2 -- 64.6 MHz FREQRANGE=14 48.8 -- 74.8 MHz FREQRANGE=15 57.6 -- 87.4 MHz Note: 1. Does not include additional clock tree current. See specifications for additional current when selected as a clock source for a particular clock multiplexer. 2. This frequency is calibrated for the HFRCODPLL only. 3. This frequency is calibrated for the HFRCOEM23 only. 4. When the HFRCO is enabled for characterization using the FORCEEN bit, the total current will be the HFRCO core current plus the specified CLKOUT current. When the HFRCO is enabled on demand, the clock current may be different. 5. Hardware delay ensures setting to within +-0.5%. Hardware also enforces this delay on a band change. 6. The frequency band limits represent the lowest and highest freqeuncy which each band can achieve over the operating range. 4.1.8.4 Fast Start_Up RC Oscillator (FSRCO) Table 4.25. Fast Start_Up RC Oscillator (FSRCO) Parameter Symbol FSRCO frequency FREQFSRCO silabs.com | Building a more connected world. Test Condition Min Typ Max Unit 17.2 20 21.2 MHz Rev. 1.0 | 42 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.8.5 Low Frequency RC Oscillator Table 4.26. Low Frequency RC Oscillator Parameter Symbol Test Condition Min Typ Max Unit Nominal oscillation frequency FLFRCO 31.785 32.768 33.751 kHz Frequency calibration step FTRIM_STEP -- 0.33 -- % Startup time TSTARTUP -- 220 -- s Current consumption ILFRCO -- 186 -- nA Min Typ Max Unit 0.944 1.0 1.095 kHz Typical trim step at mid-scale 4.1.8.6 Ultra Low Frequency RC Oscillator Table 4.27. Ultra Low Frequency RC Oscillator Parameter Symbol Oscillation Frequency FULFRCO silabs.com | Building a more connected world. Test Condition Rev. 1.0 | 43 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.9 GPIO Pins (3V GPIO pins) Unless otherwise indicated, typical conditions are: AVDD = DVDD = IOVDD = 3.0 V. Table 4.28. GPIO Pins (3V GPIO pins) Parameter Symbol Test Condition Min Typ Max Unit Leakage current ILEAK_IO MODEx = DISABLED, IOVDD = 1.71V -- 1.9 -- nA MODEx = DISABLED, IOVDD = 3.0 V -- 2.5 -- nA MODEx = DISABLED, IOVDD = 3.8 V TA = 125 C -- -- 200 nA Input low voltage1 VIL Any GPIO pin -- -- 0.3*IOVDD V Input high voltage1 VIH Any GPIO pin 0.7*IOVDD -- -- V Output low voltage VOL Sinking 20mA, IOVDD = 3.0 V -- -- 0.2 * IOVDD V Sinking 8mA, IOVDD = 1.62 V -- -- 0.4 * IOVDD V Sourcing 20mA, IOVDD = 3.0 V 0.8 * IOVDD -- -- V Sourcing 8mA, IOVDD = 1.62 V 0.6 * IOVDD -- -- V IOVDD = 3.0V, Cload = 50pF, SLEWRATE = 4, 10% to 90% -- 8.4 -- ns IOVDD = 1.7V, Cload = 50pF, SLEWRATE = 4, 10% to 90% -- 13 -- ns IOVDD = 3.0V, Cload = 50pF, SLEWRATE = 4, 90% to 10% -- 7.1 -- ns IOVDD = 1.7V, Cload = 50pF, SLEWRATE = 4, 90% to 10% -- 11.9 -- ns pull-up: MODEn = DISABLE DOUT=1, pull-down: MODEn = WIREDORPULLDOWN DOUT = 0 35 44 55 k MODE = INPUT, DOUT = 1 -- 26 -- ns Output high voltage GPIO rise time GPIO fall time Pull up/down resistance2 VOH TGPIO_RISE TGPIO_FALL RPULL Maximum filtered glitch width TGF Note: 1. GPIO input thresholds are proportional to the IOVDD pin. RESETn input thresholds are proportional to DVDD. 2. GPIO pull-ups connect to IOVDD supply, pull-downs connect to VSS. RESETn pull-up connects to DVDD. silabs.com | Building a more connected world. Rev. 1.0 | 44 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.10 Analog to Digital Converter (ADC) Unless otherwise indicated, typical conditions are: ADCCLK=10 MHz, OSR=2 Table 4.29. Analog to Digital Converter (ADC) Parameter Symbol Test Condition Min Typ Max Unit Main analog supply VAVDD Normal mode 1.71 -- 3.8 V Maximum Input Range VIN_MAX Maximum allowable input voltage 0 -- AVDD V Full-Scale Voltage VFS Voltage required for Full-Scale measurement -- VREF / Gain -- Input Measurement Range VIN Differential Mode - Plus and Minus inputs -VFS -- +VFS V Single Ended Mode - One input tied to ground 0 -- VFS V Analog Gain = 1x -- 1.8 -- pF Analog Gain = 2x -- 3.6 -- pF Analog Gain = 4x. -- 7.2 -- pF Analog Gain =0.5x -- 0.9 -- pF Input Sampling Capacitance Cs ADC clock frequency fCLK (1 Mbps) -- -- 10 MHz Throughput rate fSAMPLE fCLK = 10 MHz -- -- 1 Msps Current from all supplies, Continuous operation IADC_CONTINU- 1 Msps, OSR=2, fCLK = 10 MHz -- 290 385 A Current in Standby mode. ISTBY ADC is not functional but can wake up in 1us. Normal Mode -- 16.3 -- A ADC Startup Time From power down state -- 5 -- uS From Standby state -- 1 -- uS OUS tstartup ADC Resolution Resolution Max value is at OSR=64 -- 12 -- bits Differential Nonlinearity DNL Differential Input. (No missing codes) -1 +/- 0.25 +1.5 LSB12 Integral Nonlinearity INL Differential Input. -2.5 +/- 0.65 -+2.5 LSB12 Effective number of bits ENOB Differential Input. Gain=1x, fIN = 10 kHz, Internal VREF=1.21V. 10.5 11.18 -- bits Signal to Noise + Distortion Ratio Normal Mode SNDR Differential Input. Gain=1x,fIN = 10 kHz, Internal VREF=1.21V 65 69.1 -- dB Differential Input. Gain=2x, fIN = 10 kHz, Internal VREF=1.21V -- 68.8 -- dB Differential Input. Gain=4x, fIN = 10 kHz, Internal VREF=1.21V -- 66.9 -- dB Differential Input. Gain=0.5x, fIN = 10 kHz, Internal VREF=1.21V -- 69.2 -- dB Differential Input. Gain=1x, fIN =10 kHz, Internal VREF=1.21V -- -80.3 -70 dB Total Harmonic Distortion THD silabs.com | Building a more connected world. Rev. 1.0 | 45 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Parameter Symbol Test Condition Spurious-Free Dynamic Range SFDR Common Mode Rejection Ratio CMRR Power Supply Rejection Ratio PSRR Gain Error Offset GE OFFSET Min Typ Max Unit Differential Input. Gain=1x, fIN = 10 kHz, Internal VREF=1.21V 72 86.5 -- dB Normal mode. DC to 100 Hz -- 87.0 -- dB Normal mode. AC (measured at 500 kHz) -- 68.6 -- dB DC to 100 Hz -- 80.4 -- dB AC high frequency, using VREF_pad (measured at 500 kHz) -- 33.4 -- dB AC high frequency, using internal VBGR (measured at 500 kHz) -- 65.2 -- dB GAIN=1 and 0.5, using external VREF, direct mode. -0.3 0.069 0.3 % GAIN=2, using external VREF, direct mode. -0.4 0.151 0.4 % GAIN=3, using external VREF, direct mode. -0.7 0.186 0.7 % GAIN=4, using external VREF, direct mode. -1.1 0.227 1.1 % Internal VREF, Gain=1 -- 0.023 -- % GAIN=1 and 0.5, Differential Input -3 0.27 3 LSB GAIN=2, Differential Input -4 0.27 4 LSB GAIN=3, Differential Input -4 0.25 4 LSB GAIN=4, Differential Input -4 0.29 4 LSB External reference voltage range VEVREF 1.0 -- AVDD V Internal Reference voltage VIVREF -- 1.21 -- V silabs.com | Building a more connected world. Rev. 1.0 | 46 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.11 Analog Comparator (ACMP) Table 4.30. Analog Comparator (ACMP) Parameter Symbol Test Condition ACMP Supply current from AVDD pin IACMP ACMP Supply current from AVDD pin with Hysteresis IACMP_WHYS Min Typ Max Unit BIAS = 4, HYST = DISABLED -- 4.17 -- A BIAS = 5, HYST = DISABLED -- 8.96 -- A BIAS = 6, HYST = DISABLED -- 23.1 -- A BIAS = 7, HYST = DISABLED -- 43.9 70 A BIAS = 4, HYST = SYM30MV -- 5.98 -- A BIAS = 5, HYST = SYM30MV -- 13.0 -- A BIAS = 6, HYST = SYM30MV -- 33.6 -- A BIAS = 7, HYST = SYM30MV -- 64.2 -- A Current Consumption of Internal Voltage Reference IACMPREF BIASPROG = 7 -- -- -- A Comparator delay with 100mV overdrive TDELAY BIAS = 4 -- 155 -- ns BIAS = 5 -- 86.6 -- ns BIAS = 6 -- 50.6 -- ns BIAS = 7 -- 39.9 -- ns BIAS = 4, VCM = 0.15 to AVDD 0.15 -25 -- +25 mV BIAS = 7, VCM = 0.15 to AVDD 0.15 -30 -- +30 mV Input offset voltage VOFFSET Input Range VIN Input Voltage Range 0 -- AVDD V Hysteresis (BIAS = 4) VHYST HYST = SYM10MV1 -- 21.2 -- mV HYST = SYM20MV1 -- 39.9 -- mV HYST = SYM30MV1 -- 57.6 -- mV Internal 1.25 V Reference 1.19 1.25 1.31 V Internal 2.5 V Reference 2.34 2.5 2.75 V CSRESSEL = 0 -- 14 -- k CSRESSEL = 1 -- 24 -- k CSRESSEL = 2 -- 43 -- k CSRESSEL = 3 -- 60 -- k CSRESSEL = 4 -- 80 -- k CSRESSEL = 5 -- 99 -- k CSRESSEL = 6 -- 120 -- k Reference Voltage Capacitive Sense Oscillator Resistance VACMPREF RCSRESSEL Note: 1. VCM = 1.25 V silabs.com | Building a more connected world. Rev. 1.0 | 47 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.12 Temperature Sense Table 4.31. Temperature Sense Parameter Symbol Temperature sensor range Temperature sensor resolution Min Typ Max Unit Tsense_range -40 -- 125 C TsenseRes -- 0.25 -- C silabs.com | Building a more connected world. Test Condition Rev. 1.0 | 48 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.13 Brown Out Detectors 4.1.13.1 DVDD BOD BOD Thresholds on DVDD in EM0 and EM1 only, unless otherwise noted. Typical conditions are at TA = 25 C. Minimum and maximum values in this table represent the worst conditions across process variation, operating supply voltage range, and operating temperature range. Table 4.32. DVDD BOD Parameter Symbol Test Condition BOD threshold VDVVD_BOD BOD response time tDVDD_BOD_DELAY BOD hysteresis Min Typ Max Unit Supply Rising -- 1.67 1.71 V Supply Falling 1.62 1.65 -- V -- 0.95 -- s -- 20 -- mV Supply dropping at 100mV/s slew rate1 VDVDD_BOD_HYS T Note: 1. If the supply slew rate exceeds the specified slew rate, the BOD may trip later than expected (at a threshold below the minimum specified threshold), or the BOD may not trip at all (e.g., if the supply ramps down and then back up at a very fast rate) 4.1.13.2 LE DVDD BOD BOD thresholds on DVDD pin for low energy modes EM2 to EM4, unless otherwise noted. Table 4.33. LE DVDD BOD Parameter Symbol Test Condition Min Typ Max Unit BOD threshold VDVDD_LE_BOD Supply Falling 1.5 -- 1.71 V tDVDD_LE_BOD_D Supply dropping at 2mV/s slew rate1 -- 50 -- s -- 20 -- mV BOD response time ELAY BOD hysteresis VDVDD_LE_BOD_ HYST Note: 1. If the supply slew rate exceeds the specified slew rate, the BOD may trip later than expected (at a threshold below the minimum specified threshold), or the BOD may not trip at all (e.g., if the supply ramps down and then back up at a very fast rate) silabs.com | Building a more connected world. Rev. 1.0 | 49 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.13.3 AVDD and VIO BODs BOD Thresholds for AVDD BOD and BOD for VIO supply or supplies. All energy modes. Table 4.34. AVDD and VIO BODs Parameter Symbol Test Condition Min Typ Max Unit BOD threshold VBOD Supply falling 1.45 -- 1.71 V BOD response time tBOD_DELAY Supply dropping at 2mV/s slew rate1 -- 50 -- s BOD hysteresis VBOD_HYST -- 20 -- mV Note: 1. If the supply slew rate exceeds the specified slew rate, the BOD may trip later than expected (at a threshold below the minimum specified threshold), or the BOD may not trip at all (e.g., if the supply ramps down and then back up at a very fast rate) silabs.com | Building a more connected world. Rev. 1.0 | 50 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.14 SPI Electrical Specifications 4.1.14.1 SPI Master Timing Table 4.35. SPI Master Timing Parameter Symbol SCLK period 1 2 3 tSCLK Test Condition Min Typ Max Unit 2*tHFPERCL -- -- ns -18.5 -- 22.5 ns -13 -- 11 ns IOVDD = 1.62 V 44 -- -- ns IOVDD = 3.0 V 34 -- -- ns -8.5 -- -- ns Min Typ Max Unit 6*tHFPERCL -- -- ns -- -- ns -- -- ns K CS to MOSI 1 2 tCS_MO SCLK to MOSI 1 2 tSCLK_MO MISO setup time 1 2 tSU_MI MISO hold time 1 2 tH_MI Note: 1. Applies for both CLKPHA = 0 and CLKPHA = 1 2. Measurement done with 8 pF output loading at 10% and 90% of VDD. 3. tHFPERCLK is one period of the selected HFPERCLK. 4.1.14.2 SPI Slave Timing Table 4.36. SPI Slave Timing Parameter Symbol SCLK period 1 2 3 tSCLK Test Condition K SCLK high time1 2 3 tSCLK_HI 2.5*tHFPER CLK SCLK low time1 2 3 tSCLK_LO 2.5*tHFPER CLK CS active to MISO 1 2 tCS_ACT_MI 16 -- 52.5 ns CS disable to MISO 1 2 tCS_DIS_MI 15 -- 46 ns MOSI setup time 1 2 tSU_MO 3.5 -- -- ns MOSI hold time 1 2 3 tH_MO 4.5 -- -- ns SCLK to MISO 1 2 3 tSCLK_MI 13.5 + 1.5*tHFPER -- 31 + 2.5*tHFPER ns CLK CLK Note: 1. Applies for both CLKPHA = 0 and CLKPHA = 1 (figure only shows CLKPHA = 0). 2. Measurement done with 8 pF output loading at 10% and 90% of VDD (figure shows 50% of VDD). 3. tHFPERCLK is one period of the selected HFPERCLK. silabs.com | Building a more connected world. Rev. 1.0 | 51 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.15 I2C Electrical Specifications 4.1.15.1 I2C Standard-mode (Sm) CLHR set to 0 in the I2Cn_CTRL register. Table 4.37. I2C Standard-mode (Sm) Parameter Symbol SCL clock frequency1 Test Condition Min Typ Max Unit fSCL 0 -- 100 kHz SCL clock low time tLOW 4.7 -- -- s SCL clock high time tHIGH 4 -- -- s SDA set-up time tSU_DAT 250 -- -- ns SDA hold time tHD_DAT 0 -- -- ns Repeated START condition set-up time tSU_STA 4.7 -- -- s Repeated START condition hold time tHD_STA 4.0 -- -- s STOP condition set-up time tSU_STO 4.0 -- -- s Bus free time between a STOP and START condition tBUF 4.7 -- -- s Note: 1. The maximum SCL clock frequency listed is assuming that an arbitrary clock frequency is available. The maximum attainable SCL clock frequency may be slightly less using the HFXO or HFRCO due to the limited frequencies available. The CLKDIV should be set to a value that keeps the SCL clock frequency below the max value listed. silabs.com | Building a more connected world. Rev. 1.0 | 52 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.15.2 I2C Fast-mode (Fm) CLHR set to 1 in the I2Cn_CTRL register. Table 4.38. I2C Fast-mode (Fm) Parameter Symbol SCL clock frequency1 Test Condition Min Typ Max Unit fSCL 0 -- 400 kHz SCL clock low time tLOW 1.3 -- -- s SCL clock high time tHIGH 0.6 -- -- s SDA set-up time tSU_DAT 100 -- -- ns SDA hold time tHD_DAT 0 -- -- ns Repeated START condition set-up time tSU_STA 0.6 -- -- s Repeated START condition hold time tHD_STA 0.6 -- -- s STOP condition set-up time tSU_STO 0.6 -- -- s Bus free time between a STOP and START condition tBUF 1.3 -- -- s Note: 1. The maximum SCL clock frequency listed is assuming that an arbitrary clock frequency is available. The maximum attainable SCL clock frequency may be slightly less using the HFXO or HFRCO due to the limited frequencies available. The CLKDIV should be set to a value that keeps the SCL clock frequency below the max value listed. silabs.com | Building a more connected world. Rev. 1.0 | 53 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.1.15.3 I2C Fast-mode Plus (Fm+) CLHR set to 1 in the I2Cn_CTRL register. Table 4.39. I2C Fast-mode Plus (Fm+) Parameter Symbol SCL clock frequency1 Test Condition Min Typ Max Unit fSCL 0 -- 1000 kHz SCL clock low time tLOW 0.5 -- -- s SCL clock high time tHIGH 0.26 -- -- s SDA set-up time tSU_DAT 50 -- -- ns SDA hold time tHD_DAT 0 -- -- ns Repeated START condition set-up time tSU_STA 0.26 -- -- s Repeated START condition hold time tHD_STA 0.26 -- -- s STOP condition set-up time tSU_STO 0.26 -- -- s Bus free time between a STOP and START condition tBUF 0.5 -- -- s Note: 1. The maximum SCL clock frequency listed is assuming that an arbitrary clock frequency is available. The maximum attainable SCL clock frequency may be slightly less using the HFXO or HFRCO due to the limited frequencies available. The CLKDIV should be set to a value that keeps the SCL clock frequency below the max value listed. 4.2 Typical Performance Curves Typical performance curves indicate typical characterized performance under the stated conditions. silabs.com | Building a more connected world. Rev. 1.0 | 54 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.2.1 Supply Current Figure 4.1. EM0 Active Mode Typical Supply Current vs. Temperature silabs.com | Building a more connected world. Rev. 1.0 | 55 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Figure 4.2. EM2, EM3, and EM4 Sleep Mode Typical Supply Current vs. Temperature silabs.com | Building a more connected world. Rev. 1.0 | 56 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications 4.2.2 2.4 GHz Radio Figure 4.3. 2.4 GHz 20 dBm PA RF Transmitter Output Power Figure 4.4. 2.4 GHz 10 dBm PA RF Transmitter Output Power silabs.com | Building a more connected world. Rev. 1.0 | 57 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Figure 4.5. 2.4 GHz 0 dBm PA RF Transmitter Output Power Figure 4.6. 2.4 GHz 802.15.4 RF Receiver Sensitivity silabs.com | Building a more connected world. Rev. 1.0 | 58 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Electrical Specifications Figure 4.7. 2.4 GHz BLE RF Receiver Sensitivity silabs.com | Building a more connected world. Rev. 1.0 | 59 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Typical Connection Diagrams 5. Typical Connection Diagrams 5.1 Power Typical power supply connections are shown in the following figure. VDD Main Supply + - AVDD IOVDD HFXTAL_I HFXTAL_O DVDD LFXTAL_I LFXTAL_O DECOUPLE RFVDD PAVDD Figure 5.1. EFR32MG21 Typical Application Circuit: Direct Supply Configuration 5.2 RF Matching Networks 5.2.1 2.4 GHz 0 dBm Matching Network The recommended RF matching network circuit diagram for 2.4GHz applications with a transmit power of 0 dBm or less is shown in Figure 5.2 Typical 0 dBm 2.4 GHz RF impedance-matching network circuit on page 60. Typical component values are shown in Table 5.1 2.4GHz 0 dBm Component Values on page 60. Please refer to the development board Bill of Materials for specific part recommendation including tolerance, component size, recommended manufacturer, and recommended part number. L1 2G4RF2 C3 50 C1 2G4RF1 C2 C4 Figure 5.2. Typical 0 dBm 2.4 GHz RF impedance-matching network circuit Table 5.1. 2.4GHz 0 dBm Component Values Designator Value C1 1.7 pF C2 0.9 pF L1 2.0 nH C3 2.7 pF C4 0.5 pF silabs.com | Building a more connected world. Rev. 1.0 | 60 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Typical Connection Diagrams 5.2.2 2.4 GHz 10 dBm Matching Network The recommended RF matching network circuit diagram for 2.4GHz applications with a transmit power of greater than 0 dBm and up to 10 dBm is shown in Figure 5.3 Typical 10 dBm 2.4 GHz RF impedance-matching network circuit on page 61. Typical component values are shown in Table 5.2 2.4GHz 10 dBm Component Values on page 61. Please refer to the development board Bill of Materials for specific part recommendation including tolerance, component size, recommended manufacturer, and recommended part number. L1 2G4RF_IO2 2G4RF_IO1 50 C1 C2 Figure 5.3. Typical 10 dBm 2.4 GHz RF impedance-matching network circuit Table 5.2. 2.4GHz 10 dBm Component Values Designator Value C1 1.9 pF L1 2.1 nH C2 0.9 pF silabs.com | Building a more connected world. Rev. 1.0 | 61 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Typical Connection Diagrams 5.2.3 2.4 GHz 20 dBm Matching Network For part numbers which support the high-power 20 dBm PA, the recommended RF matching network circuit diagram for 2.4GHz applications with a transmit power of greater than 10 and up to 20 dBm is shown in Figure 5.4 Typical 20 dBm 2.4 GHz RF impedancematching network circuit on page 62. Typical component values are shown in Table 5.3 2.4GHz 20 dBm Component Values on page 62. Please refer to the development board Bill of Materials for specific part recommendation including tolerance, component size, recommended manufacturer, and recommended part number. L1 L2 2G4RF_IO2 50 C1 C2 C3 2G4RF_IO1 Figure 5.4. Typical 20 dBm 2.4 GHz RF impedance-matching network circuit Table 5.3. 2.4GHz 20 dBm Component Values Designator Value C1 2.3 pF L1 2.3 nF C2 0.8 pF L2 1.1 nF C3 0.3 nH 5.3 Other Connections Other components or connections may be required to meet the system-level requirements. Application Note AN0002: "Hardware Design Considerations" contains detailed information on these connections. Application Notes can be accessed on the Silicon Labs website (www.silabs.com/32bit-appnotes). silabs.com | Building a more connected world. Rev. 1.0 | 62 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Pin Definitions 6. Pin Definitions 6.1 QFN32 2.4GHz Device Pinout Figure 6.1. QFN32 2.4GHz Device Pinout The following table provides package pin connections and general descriptions of pin functionality. For detailed information on the supported features for each GPIO pin, see 6.2 Alternate Function Table, 6.3 Analog Peripheral Connectivity, and 6.4 Digital Peripheral Connectivity. Table 6.1. QFN32 2.4GHz Device Pinout Pin Name Pin(s) Description Pin Name Pin(s) Description PC00 1 GPIO PC01 2 GPIO PC02 3 GPIO PC03 4 GPIO PC04 5 GPIO PC05 6 GPIO HFXTAL_I 7 High Frequency Crystal Input HFXTAL_O 8 High Frequency Crystal Output RESETn 9 Reset Pin RFVDD 10 Radio power supply silabs.com | Building a more connected world. Rev. 1.0 | 63 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Pin Definitions Pin Name Pin(s) Description Pin Name RFVSS 11 Radio Ground RF2G4_IO1 13 2.4 GHz RF input/output PB01 15 PA00 Pin(s) Description RF2G4_IO2 12 2.4 GHz RF input/output PAVDD 14 Power Amplifier (PA) power supply GPIO PB00 16 GPIO 17 GPIO PA01 18 GPIO PA02 19 GPIO PA03 20 GPIO PA04 21 GPIO PA05 22 GPIO PA06 23 GPIO DECOUPLE 24 Decouple output for on-chip voltage regulator. An external decoupling capacitor is required at this pin. DVDD 25 Digital power supply AVDD 26 Analog power supply IOVDD 27 Digital IO power supply. PD04 28 GPIO PD03 29 GPIO PD02 30 GPIO PD01 31 GPIO PD00 32 GPIO 6.2 Alternate Function Table A wide selection of alternate functionality is available for multiplexing to various pins. The following table shows what functions are available on each device pin. Table 6.2. GPIO Alternate Function Table GPIO Alternate Function PC05 GPIO.EM4WU7 PB01 GPIO.EM4WU3 PA01 GPIO.SWCLK PA02 GPIO.SWDIO PA03 GPIO.SWV GPIO.TDO PA04 GPIO.TDI GPIO.TRACECLK PA05 GPIO.EM4WU0 PD02 GPIO.EM4WU9 PD01 LFXO.LFXTAL_I PD00 LFXO.LFXTAL_O silabs.com | Building a more connected world. GPIO.TRACEDATA0 LFXO.LF_EXTCLK Rev. 1.0 | 64 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Pin Definitions 6.3 Analog Peripheral Connectivity Many analog resources are routable and can be connected to numerous GPIO's. The table below indicates which peripherals are avaliable on each GPIO port. When a differential connection is being used Positive inputs are restricted to the EVEN pins and Negative inputs are restricted to the ODD pins. When a single ended connection is being used positive input is avaliable on all pins. See the device Reference Manual for more details on the ABUS and analog peripherals. Table 6.3. ABUS Routing Table Peripheral ACMP0 ACMP1 IADC0 Signal PA PB PC PD EVEN ODD EVEN ODD EVEN ODD EVEN ODD ana_neg Yes Yes Yes Yes Yes Yes Yes Yes ana_pos Yes Yes Yes Yes Yes Yes Yes Yes ana_neg Yes Yes Yes Yes Yes Yes Yes Yes ana_pos Yes Yes Yes Yes Yes Yes Yes Yes ana_neg Yes Yes Yes Yes Yes Yes Yes Yes ana_pos Yes Yes Yes Yes Yes Yes Yes Yes silabs.com | Building a more connected world. Rev. 1.0 | 65 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Pin Definitions 6.4 Digital Peripheral Connectivity Many digital resources are routable and can be connected to numerous GPIO's. The table below indicates which peripherals are avaliable on each GPIO port. Table 6.4. DBUS Routing Table Peripheral.Resource PORT PA PB PC PD ACMP0.DIGOUT Available Available Available Available ACMP1.DIGOUT Available Available Available Available CMU.CLKIN0 Available Available CMU.CLKOUT0 Available Available CMU.CLKOUT1 Available Available FRC.DCLK Available Available FRC.DFRAME Available Available FRC.DOUT Available Available CMU.CLKOUT2 Available Available I2C0.SCL Available Available Available Available I2C0.SDA Available Available Available Available I2C1.SCL Available Available I2C1.SDA Available Available LETIMER0.OUT0 Available Available LETIMER0.OUT1 Available Available MODEM.ANT0 Available Available Available Available MODEM.ANT1 Available Available Available Available MODEM.DCLK Available Available MODEM.DIN Available Available MODEM.DOUT Available Available PRS.ASYNCH0 Available Available PRS.ASYNCH1 Available Available PRS.ASYNCH10 Available Available PRS.ASYNCH11 Available Available PRS.ASYNCH6 Available Available PRS.ASYNCH7 Available Available PRS.ASYNCH8 Available Available PRS.ASYNCH2 Available Available PRS.ASYNCH3 Available Available PRS.ASYNCH4 Available Available PRS.ASYNCH5 Available Available silabs.com | Building a more connected world. Rev. 1.0 | 66 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Pin Definitions Peripheral.Resource PORT PA PB PRS.ASYNCH9 PC PD Available Available PRS.SYNCH0 Available Available Available Available PRS.SYNCH1 Available Available Available Available PRS.SYNCH2 Available Available Available Available PRS.SYNCH3 Available Available Available Available TIMER0.CC0 Available Available Available Available TIMER0.CC1 Available Available Available Available TIMER0.CC2 Available Available Available Available TIMER0.CDTI0 Available Available Available Available TIMER0.CDTI1 Available Available Available Available TIMER0.CDTI2 Available Available Available Available TIMER1.CC0 Available Available Available Available TIMER1.CC1 Available Available Available Available TIMER1.CC2 Available Available Available Available TIMER1.CDTI0 Available Available Available Available TIMER1.CDTI1 Available Available Available Available TIMER1.CDTI2 Available Available Available Available TIMER2.CC0 Available Available TIMER2.CC1 Available Available TIMER2.CC2 Available Available TIMER2.CDTI0 Available Available TIMER2.CDTI1 Available Available TIMER2.CDTI2 Available Available TIMER3.CC0 Available Available TIMER3.CC1 Available Available TIMER3.CC2 Available Available TIMER3.CDTI0 Available Available TIMER3.CDTI1 Available Available TIMER3.CDTI2 Available Available USART0.CLK Available Available Available Available USART0.CS Available Available Available Available USART0.CTS Available Available Available Available USART0.RTS Available Available Available Available USART0.RX Available Available Available Available USART0.TX Available Available Available Available USART1.CLK Available Available silabs.com | Building a more connected world. Rev. 1.0 | 67 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Pin Definitions Peripheral.Resource PORT PA PB PC PD USART1.CS Available Available USART1.CTS Available Available USART1.RTS Available Available USART1.RX Available Available USART1.TX Available Available USART2.CLK Available Available USART2.CS Available Available USART2.CTS Available Available USART2.RTS Available Available USART2.RX Available Available USART2.TX Available Available silabs.com | Building a more connected world. Rev. 1.0 | 68 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet QFN32 Package Specifications 7. QFN32 Package Specifications 7.1 QFN32 Package Dimensions Figure 7.1. QFN32 Package Drawing silabs.com | Building a more connected world. Rev. 1.0 | 69 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet QFN32 Package Specifications Table 7.1. QFN32 Package Dimensions Dimension Min Typ Max A 0.80 0.85 0.90 A1 0.00 0.02 0.05 A3 0.20 REF b 0.15 0.20 0.25 D 3.90 4.00 4.10 E 3.90 4.00 4.10 D2 2.60 2.70 2.80 E2 2.60 2.70 2.80 e 0.40 BSC L 0.20 0.30 0.40 K 0.20 -- -- R 0.075 -- 0.125 aaa 0.10 bbb 0.07 ccc 0.10 ddd 0.05 eee 0.08 fff 0.10 Note: 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2. Dimensioning and Tolerancing per ANSI Y14.5M-1994. 3. This drawing conforms to the JEDEC Solid State Outline MO-220, Variation VKKD-4. 4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components. silabs.com | Building a more connected world. Rev. 1.0 | 70 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet QFN32 Package Specifications 7.2 QFN32 PCB Land Pattern Figure 7.2. QFN32 PCB Land Pattern Drawing silabs.com | Building a more connected world. Rev. 1.0 | 71 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet QFN32 Package Specifications Table 7.2. QFN32 PCB Land Pattern Dimensions Dimension Typ L 0.76 W 0.22 e 0.40 S 3.21 S1 3.21 L1 2.80 W1 2.80 Note: 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2. This Land Pattern Design is based on the IPC-7351 guidelines. 3. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 m minimum, all the way around the pad. 4. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release. 5. The stencil thickness should be 0.101 mm (4 mils). 6. The ratio of stencil aperture to land pad size can be 1:1 for all perimeter pads. 7. A 2x2 array of 1.10 mm x 1.10 mm openings on a 1.30 mm pitch can be used for the center ground pad. 8. A No-Clean, Type-3 solder paste is recommended. 9. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components. 10. Above notes and stencil design are shared as recommendations only. A customer or user may find it necessary to use different parameters and fine tune their SMT process as required for their application and tooling. silabs.com | Building a more connected world. Rev. 1.0 | 72 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet QFN32 Package Specifications 7.3 QFN32 Package Marking FFFF PPPPPP TTTTTT YYWW Figure 7.3. QFN32 Package Marking The package marking consists of: * FFFF - The product family codes. 1. Family Code ( B = Blue | M = Mighty | F = Flex ) 2. G (Gecko) 3. Series (2) 4. Device Configuration (1, 2, 3, ...) * PPPPPP - The product option codes. * 1-2. MCU Feature Codes * 3-4. Radio Feature Codes * 5. Flash (J = 1024k | I = 768k | H = 512k | W= 352k | G = 256k | F = 128k) * 6. Temperature grade (G = -40 to 85 C | I = -40 to 125 C ) * TTTTTT - A trace or manufacturing code. The first letter is the device revision. * YY - The last 2 digits of the assembly year. * WW - The 2-digit workweek when the device was assembled. silabs.com | Building a more connected world. Rev. 1.0 | 73 EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet Revision History 8. Revision History Revision1.0 March, 2019 * Added Minimum and Maximum values to electrical specification tables. * Updated BLE 125k and 500 kbps RF specifications to reflect latest silicon. * Updated 20 dBm Tx RF specifications to reflect latest silicon. * Added typical Curves. * Added RF Matching networks. * Updated RF specifications to reflect latest silicon. * Updated typical specification values to reflect latest silicon. * Wording, spelling, and grammar fixes. Revision 0.5 February, 2019 * Added Flash electrical specification table. * Added typical specification values for 20 dBm and 0 dBm PAs. * Updated typical specification values for RF current consumption to reflect latest silicon. * Wording, spelling, and grammar fixes. Revision 0.42 January, 2019 * Updated typical values for all parameters, including RF parameters. * Updated specification tables to reflect updated specification list. * Wording, spelling, and grammar fixes. * Synchronized revisions for all datasheets in device family. Revision 0.4 July, 2018 * Updated specification tables to reflect updated specification list and inserted new specification tables. * Updated typical values for key parameters. * Wording, spelling, and grammar fixes. Revision 0.1 May, 2018 Initial Release silabs.com | Building a more connected world. Rev. 1.0 | 74 Simplicity Studio One-click access to MCU and wireless tools, documentation, software, source code libraries & more. Available for Windows, Mac and Linux! IoT Portfolio www.silabs.com/IoT SW/HW Quality Support and Community www.silabs.com/simplicity www.silabs.com/quality community.silabs.com Disclaimer Silicon Labs intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Labs products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Labs reserves the right to make changes without further notice to the product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. 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