Preliminary ...the world's most energy friendly microcontrollers EFM32LG880 DATASHEET F256/F128/F64 Preliminary * ARM Cortex-M3 CPU platform * High Performance 32-bit processor @ up to 48 MHz * Memory Protection Unit * Flexible Energy Management System * 20 nA @ 3 V Shutoff Mode * 0.4A @ 3 V Shutoff Mode with RTC * 0.9 A @ 3 V Stop Mode, including Power-on Reset, Brown-out Detector, RAM and CPU retention * 1.1 A @ 3 V Deep Sleep Mode, including RTC with 32.768 kHz oscillator, Power-on Reset, Brown-out Detector, RAM and CPU retention * 50 A/MHz @ 3 V Sleep Mode * 200 A/MHz @ 3 V Run Mode, with code executed from flash * 256/128/64 KB Flash * 32 KB RAM * 85 General Purpose I/O pins * Configurable push-pull, open-drain, pull-up/down, input filter, drive strength * Configurable peripheral I/O locations * 16 asynchronous external interrupts * Output state retention and wake-up from Shutoff Mode * 12 Channel DMA Controller * 12 Channel Peripheral Reflex System (PRS) for autonomous inter-peripheral signaling * Hardware AES with 128/256-bit keys in 54/75 cycles * Timers/Counters * 4x 16-bit Timer/Counter * 4x3 Compare/Capture/PWM channels * Dead-Time Insertion on TIMER0 * 16-bit Low Energy Timer * 1x 24-bit Real-Time Counter and 1x 32-bit Real-Time Counter * 3x 16/8-bit Pulse Counter * Watchdog Timer with dedicated RC oscillator @ 50 nA * Integrated LCD Controller for up to 8x36 segments * Voltage boost, adjustable contrast and autonomous animation * Backup Power Domain * RTC and retention registers in a separate power domain, available in all energy modes * Operation from backup battery when main power drains out * External Bus Interface for up to 4x256 MB of external memory mapped space * TFT Controller with Direct Drive * Communication interfaces * 3x Universal Synchronous/Asynchronous Receiver/Transmitter * UART/SPI/SmartCard (ISO 7816)/IrDA/I2S * 2x Universal Asynchronous Receiver/Transmitter * 2x Low Energy UART * Autonomous operation with DMA in Deep Sleep Mode 2 * 2x I C Interface with SMBus support * Address recognition in Stop Mode * Ultra low power precision analog peripherals * 12-bit 1 Msamples/s Analog to Digital Converter * 8 single ended channels/4 differential channels * On-chip temperature sensor * 12-bit 500 ksamples/s Digital to Analog Converter * 2x Analog Comparator * Capacitive sensing with up to 16 inputs * 3x Operational Amplifier * 6.1 MHz GBW, Rail-to-rail, Programmable Gain * Supply Voltage Comparator * Low Energy Sensor Interface (LESENSE) * Autonomous sensor monitoring in Deep Sleep Mode * Wide range of sensors supported, including LC sensors and capacitive buttons * Ultra efficient Power-on Reset and Brown-Out Detector * Debug Interface * 2-pin Serial Wire Debug interface * 1-pin Serial Wire Viewer * Embedded Trace Module v3.5 (ETM) * Pre-Programmed UART Bootloader * Temperature range -40 to 85 C * Single power supply 1.85 to 3.8 V * LQFP100 package 32-bit ARM Cortex-M0+, Cortex-M3 and Cortex-M4 microcontrollers for: * Energy, gas, water and smart metering * Health and fitness applications * Smart accessories * Alarm and security systems * Industrial and home automation Preliminary ...the world's most energy friendly microcontrollers 1 Ordering Information Table 1.1 (p. 2) shows the available EFM32LG880 devices. Table 1.1. Ordering Information Ordering Code Flash (kB) RAM (kB) Max Speed (MHz) Supply Voltage (V) Temperature (C) Package EFM32LG880F64-QFP100 64 32 48 1.85 - 3.8 -40 - 85 LQFP100 EFM32LG880F128-QFP100 128 32 48 1.85 - 3.8 -40 - 85 LQFP100 EFM32LG880F256-QFP100 256 32 48 1.85 - 3.8 -40 - 85 LQFP100 Visit www.silabs.com for information on global distributors and representatives. 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 2 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 2 System Summary 2.1 System Introduction The EFM32 MCUs are the world's most energy friendly microcontrollers. With a unique combination of the powerful 32-bit ARM Cortex-M3, innovative low energy techniques, short wake-up time from energy saving modes, and a wide selection of peripherals, the EFM32LG microcontroller is well suited for any battery operated application as well as other systems requiring high performance and low-energy consumption. This section gives a short introduction to each of the modules in general terms and also shows a summary of the configuration for the EFM32LG880 devices. For a complete feature set and indepth information on the modules, the reader is referred to the EFM32LG Reference Manual. A block diagram of the EFM32LG880 is shown in Figure 2.1 (p. 3) . Figure 2.1. Block Diagram LG880F64/ 128/ 256 Core and Mem ory Clock Managem ent Mem ory Protection Unit ARM Cortex TM- M3 processor Flash Program Mem ory RAM Mem ory Debug Interface w/ ETM Energy Managem ent High Freq. Crystal Oscillator High Freq RC Oscillator Voltage Regulator Voltage Com parator Low Freq. Crystal Oscillator Low Freq. RC Oscillator Brown- out Detector Power- on Reset DMA Controller Ultra Low Freq. RC Oscillator Back- up Power Dom ain 32- bit bus Peripheral Reflex System Serial Interfaces USART Low Energy UART UART 2 I C I/ O Ports Tim ers and Triggers Ex t. Bus Interface TFT Driver Ex ternal Interrupts General Purpose I/ O Pin Reset Pin Wakeup Tim er/ Counter LESENSE Low Energy Tim er Real Tim e Counter Pulse Counter Watchdog Tim er Back- up RTC Analog Interfaces ADC LCD Controller DAC Operational Am plifier Security Hardware AES Analog Com parator 2.1.1 ARM Cortex-M3 Core The ARM Cortex-M3 includes a 32-bit RISC processor which can achieve as much as 1.25 Dhrystone MIPS/MHz. A Memory Protection Unit with support for up to 8 memory segments is included, as well as a Wake-up Interrupt Controller handling interrupts triggered while the CPU is asleep. The EFM32 implementation of the Cortex-M3 is described in detail in EFM32 Cortex-M3 Reference Manual. 2.1.2 Debug Interface (DBG) This device includes hardware debug support through a 2-pin serial-wire debug interface and an Embedded Trace Module (ETM) for data/instruction tracing. In addition there is also a 1-wire Serial Wire Viewer pin which can be used to output profiling information, data trace and software-generated messages. 2.1.3 Memory System Controller (MSC) The Memory System Controller (MSC) is the program memory unit of the EFM32LG microcontroller. The flash memory is readable and writable from both the Cortex-M3 and DMA. The flash memory is divided 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 3 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers into two blocks; the main block and the information block. Program code is normally written to the main block. Additionally, the information block is available for special user data and flash lock bits. There is also a read-only page in the information block containing system and device calibration data. Read and write operations are supported in the energy modes EM0 and EM1. 2.1.4 Direct Memory Access Controller (DMA) The Direct Memory Access (DMA) controller performs memory operations independently of the CPU. This has the benefit of reducing the energy consumption and the workload of the CPU, and enables the system to stay in low energy modes when moving for instance data from the USART to RAM or from the External Bus Interface to a PWM-generating timer. The DMA controller uses the PL230 DMA controller licensed from ARM. 2.1.5 Reset Management Unit (RMU) The RMU is responsible for handling the reset functionality of the EFM32LG. 2.1.6 Energy Management Unit (EMU) The Energy Management Unit (EMU) manage all the low energy modes (EM) in EFM32LG microcontrollers. Each energy mode manages if the CPU and the various peripherals are available. The EMU can also be used to turn off the power to unused SRAM blocks. 2.1.7 Clock Management Unit (CMU) The Clock Management Unit (CMU) is responsible for controlling the oscillators and clocks on-board the EFM32LG. The CMU provides the capability to turn on and off the clock on an individual basis to all peripheral modules in addition to enable/disable and configure the available oscillators. The high degree of flexibility enables software to minimize energy consumption in any specific application by not wasting power on peripherals and oscillators that are inactive. 2.1.8 Watchdog (WDOG) The purpose of the watchdog timer is to generate a reset in case of a system failure, to increase application reliability. The failure may e.g. be caused by an external event, such as an ESD pulse, or by a software failure. 2.1.9 Peripheral Reflex System (PRS) The Peripheral Reflex System (PRS) system is a network which lets the different peripheral module communicate directly with each other without involving the CPU. Peripheral modules which send out Reflex signals are called producers. The PRS routes these reflex signals to consumer peripherals which apply actions depending on the data received. The format for the Reflex signals is not given, but edge triggers and other functionality can be applied by the PRS. 2.1.10 External Bus Interface (EBI) The External Bus Interface provides access to external parallel interface devices such as SRAM, FLASH, ADCs and LCDs. The interface is memory mapped into the address bus of the Cortex-M3. This enables seamless access from software without manually manipulating the IO settings each time a read or write is performed. The data and address lines are multiplexed in order to reduce the number of pins required to interface the external devices. The timing is adjustable to meet specifications of the external devices. The interface is limited to asynchronous devices. 2.1.11 TFT Direct Drive The EBI contains a TFT controller which can drive a TFT via a 565 RGB interface. The TFT controller supports programmable display and port sizes and offers accurate control of frequency and setup and hold timing. Direct Drive is supported for TFT displays which do not have their own frame buffer. In 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 4 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers that case TFT Direct Drive can transfer data from either on-chip memory or from an external memory device to the TFT at low CPU load. Automatic alpha-blending and masking is also supported for transfers through the EBI interface. 2.1.12 Inter-Integrated Circuit Interface (I2C) 2 2 The I C module provides an interface between the MCU and a serial I C-bus. It is capable of acting as both a master and a slave, and supports multi-master buses. Both standard-mode, fast-mode and fastmode plus speeds are supported, allowing transmission rates all the way from 10 kbit/s up to 1 Mbit/s. Slave arbitration and timeouts are also provided to allow implementation of an SMBus compliant system. 2 The interface provided to software by the I C module, allows both fine-grained control of the transmission process and close to automatic transfers. Automatic recognition of slave addresses is provided in all energy modes. 2.1.13 Universal Synchronous/Asynchronous Receiver/Transmitter (USART) The Universal Synchronous Asynchronous serial Receiver and Transmitter (USART) is a very flexible serial I/O module. It supports full duplex asynchronous UART communication as well as RS-485, SPI, MicroWire and 3-wire. It can also interface with ISO7816 SmartCards, IrDA and I2S devices. 2.1.14 Pre-Programmed UART Bootloader The bootloader presented in application note AN0003 is pre-programmed in the device at factory. Autobaud and destructive write are supported. The autobaud feature, interface and commands are described further in the application note. 2.1.15 Universal Asynchronous Receiver/Transmitter (UART) The Universal Asynchronous serial Receiver and Transmitter (UART) is a very flexible serial I/O module. It supports full- and half-duplex asynchronous UART communication. 2.1.16 Low Energy Universal Asynchronous Receiver/Transmitter (LEUART) TM The unique LEUART , the Low Energy UART, is a UART that allows two-way UART communication on a strict power budget. Only a 32.768 kHz clock is needed to allow UART communication up to 9600 baud/ s. The LEUART includes all necessary hardware support to make asynchronous serial communication possible with minimum of software intervention and energy consumption. 2.1.17 Timer/Counter (TIMER) The 16-bit general purpose Timer has 3 compare/capture channels for input capture and compare/PulseWidth Modulation (PWM) output. TIMER0 also includes a Dead-Time Insertion module suitable for motor control applications. 2.1.18 Real Time Counter (RTC) The Real Time Counter (RTC) contains a 24-bit counter and is clocked either by a 32.768 kHz crystal oscillator, or a 32.768 kHz RC oscillator. In addition to energy modes EM0 and EM1, the RTC is also available in EM2. This makes it ideal for keeping track of time since the RTC is enabled in EM2 where most of the device is powered down. 2.1.19 Backup Real Time Counter (BURTC) The Backup Real Time Counter (BURTC) contains a 32-bit counter and is clocked either by a 32.768 kHz crystal oscillator, a 32.768 kHz RC oscillator or a 1 kHz ULFRCO. The BURTC is available in all Energy Modes and it can also run in backup mode, making it operational even if the main power should drain out. 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 5 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 2.1.20 Low Energy Timer (LETIMER) TM The unique LETIMER , the Low Energy Timer, is a 16-bit timer that is available in energy mode EM2 in addition to EM1 and EM0. Because of this, it can 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. It is also connected to the Real Time Counter (RTC), and can be configured to start counting on compare matches from the RTC. 2.1.21 Pulse Counter (PCNT) The Pulse Counter (PCNT) can be used for counting pulses on a single input or to decode quadrature encoded inputs. It runs off either the internal LFACLK or the PCNTn_S0IN pin as external clock source. The module may operate in energy mode EM0 - EM3. 2.1.22 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 can either be one of the selectable internal references or from external pins. Response time and thereby also the current consumption can be configured by altering the current supply to the comparator. 2.1.23 Voltage Comparator (VCMP) The Voltage Supply Comparator is used to monitor the supply voltage from software. An interrupt can be generated when the supply falls below or rises above a programmable threshold. Response time and thereby also the current consumption can be configured by altering the current supply to the comparator. 2.1.24 Analog to Digital Converter (ADC) The ADC is a Successive Approximation Register (SAR) architecture, with a resolution of up to 12 bits at up to one million samples per second. The integrated input mux can select inputs from 8 external pins and 6 internal signals. 2.1.25 Digital to Analog Converter (DAC) The Digital to Analog Converter (DAC) can convert a digital value to an analog output voltage. The DAC is fully differential rail-to-rail, with 12-bit resolution. It has two single ended output buffers which can be combined into one differential output. The DAC may be used for a number of different applications such as sensor interfaces or sound output. 2.1.26 Operational Amplifier (OPAMP) The EFM32LG880 features 3 Operational Amplifiers. The Operational Amplifier is a versatile general purpose amplifier with rail-to-rail differential input and rail-to-rail single ended output. The input can be set to pin, DAC or OPAMP, whereas the output can be pin, OPAMP or ADC. The current is programmable and the OPAMP has various internal configurations such as unity gain, programmable gain using internal resistors etc. 2.1.27 Low Energy Sensor Interface (LESENSE) TM The Low Energy Sensor Interface (LESENSE ), is a highly configurable sensor interface with support for up to 16 individually configurable sensors. By controlling the analog comparators and DAC, LESENSE is capable of supporting a wide range of sensors and measurement schemes, and can for instance measure LC sensors, resistive sensors and capacitive sensors. LESENSE also includes a programmable FSM which enables simple processing of measurement results without CPU intervention. LESENSE is available in energy mode EM2, in addition to EM0 and EM1, making it ideal for sensor monitoring in applications with a strict energy budget. 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 6 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 2.1.28 Backup Power Domain The backup power domain is a separate power domain containing a Backup Real Time Counter, BURTC, and a set of retention registers, available in all energy modes. This power domain can be configured to automatically change power source to a backup battery when the main power drains out. The backup power domain enables the EFM32LG880 to keep track of time and retain data, even if the main power source should drain out. 2.1.29 Advanced Encryption Standard Accelerator (AES) The AES accelerator performs AES encryption and decryption with 128-bit or 256-bit keys. Encrypting or decrypting one 128-bit data block takes 52 HFCORECLK cycles with 128-bit keys and 75 HFCORECLK cycles with 256-bit keys. The AES module is an AHB slave which enables efficient access to the data and key registers. All write accesses to the AES module must be 32-bit operations, i.e. 8- or 16-bit operations are not supported. 2.1.30 General Purpose Input/Output (GPIO) In the EFM32LG880, there are 85 General Purpose Input/Output (GPIO) pins, which are divided into ports with up to 16 pins each. These pins can individually be configured as either an output or input. More advanced configurations like open-drain, filtering and drive strength can also be configured individually for the pins. The GPIO pins can also be overridden by peripheral pin connections, like Timer PWM outputs or USART communication, which can be routed to several locations on the device. The GPIO supports up to 16 asynchronous external pin interrupts, which enables interrupts from any pin on the device. Also, the input value of a pin can be routed through the Peripheral Reflex System to other peripherals. 2.1.31 Liquid Crystal Display Driver (LCD) The LCD driver is capable of driving a segmented LCD display with up to 8x36 segments. A voltage boost function enables it to provide the LCD display with higher voltage than the supply voltage for the device. In addition, an animation feature can run custom animations on the LCD display without any CPU intervention. The LCD driver can also remain active even in Energy Mode 2 and provides a Frame Counter interrupt that can wake-up the device on a regular basis for updating data. 2.2 Configuration Summary The features of the EFM32LG880 is a subset of the feature set described in the EFM32LG Reference Manual. Table 2.1 (p. 7) describes device specific implementation of the features. Table 2.1. Configuration Summary Module Configuration Pin Connections Cortex-M3 Full configuration NA DBG Full configuration DBG_SWCLK, DBG_SWDIO, DBG_SWO MSC Full configuration NA DMA Full configuration NA RMU Full configuration NA EMU Full configuration NA CMU Full configuration CMU_OUT0, CMU_OUT1 WDOG Full configuration NA PRS Full configuration NA 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 7 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Module Configuration Pin Connections EBI Full configuration EBI_A[27:0], EBI_AD[15:0], EBI_ARDY, EBI_ALE, EBI_BL[1:0], EBI_CS[3:0], EBI_CSTFT, EBI_DCLK, EBI_DTEN, EBI_HSNC, EBI_NANDREn, EBI_NANDWEn, EBI_REn, EBI_VSNC, EBI_WEn I2C0 Full configuration I2C0_SDA, I2C0_SCL I2C1 Full configuration I2C1_SDA, I2C1_SCL USART0 Full configuration with IrDA US0_TX, US0_RX. US0_CLK, US0_CS USART1 Full configuration with I2S US1_TX, US1_RX, US1_CLK, US1_CS USART2 Full configuration with I2S US2_TX, US2_RX, US2_CLK, US2_CS UART0 Full configuration U0_TX, U0_RX UART1 Full configuration U1_TX, U1_RX LEUART0 Full configuration LEU0_TX, LEU0_RX LEUART1 Full configuration LEU1_TX, LEU1_RX TIMER0 Full configuration with DTI TIM0_CC[2:0], TIM0_CDTI[2:0] TIMER1 Full configuration TIM1_CC[2:0] TIMER2 Full configuration TIM2_CC[2:0] TIMER3 Full configuration TIM3_CC[2:0] RTC Full configuration NA BURTC Full configuration NA LETIMER0 Full configuration LET0_O[1:0] PCNT0 Full configuration, 16-bit count register PCNT0_S[1:0] PCNT1 Full configuration, 8-bit count register PCNT1_S[1:0] PCNT2 Full configuration, 8-bit count register PCNT2_S[1:0] ACMP0 Full configuration ACMP0_CH[7:0], ACMP0_O ACMP1 Full configuration ACMP1_CH[7:0], ACMP1_O VCMP Full configuration NA ADC0 Full configuration ADC0_CH[7:0] DAC0 Full configuration DAC0_OUT[1:0], DAC0_OUTxALT OPAMP Full configuration Outputs: OPAMP_OUTx, OPAMP_OUTxALT, Inputs: OPAMP_Px, OPAMP_Nx AES Full configuration NA GPIO 85 pins Available pins are shown in Table 4.3 (p. 60) LCD Full configuration LCD_SEG[35:0], LCD_COM[7:0], LCD_BCAP_P, LCD_BCAP_N, LCD_BEXT 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 8 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 2.3 Memory Map The EFM32LG880 memory map is shown in Figure 2.2 (p. 9) , with RAM and Flash sizes for the largest memory configuration. Figure 2.2. EFM32LG880 Memory Map with largest RAM and Flash sizes 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 9 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 3 Electrical Characteristics 3.1 Test Conditions 3.1.1 Typical Values The typical data are based on TAMB=25C and VDD=3.0 V, as defined in Table 3.2 (p. 10) , by simulation and/or technology characterisation unless otherwise specified. 3.1.2 Minimum and Maximum Values The minimum and maximum values represent the worst conditions of ambient temperature, supply voltage and frequencies, as defined in Table 3.2 (p. 10) , by simulation and/or technology characterisation unless otherwise specified. 3.2 Absolute Maximum Ratings The absolute maximum ratings are stress ratings, and functional operation under such conditions are not guaranteed. Stress beyond the limits specified in Table 3.1 (p. 10) may affect the device reliability or cause permanent damage to the device. Functional operating conditions are given in Table 3.2 (p. 10) . Table 3.1. Absolute Maximum Ratings Symbol Parameter Condition Min Typ Max -40 Unit 150 1 TSTG Storage temperature range TS Maximum soldering temperature VDDMAX External main supply voltage 0 3.8 V VIOPIN Voltage on any I/O pin -0.3 VDD+0.3 V Latest IPC/JEDEC J-STD-020 Standard C 260 C 1 Based on programmed devices tested for 10000 hours at 150C. Storage temperature affects retention of preprogrammed calibration values stored in flash. Please refer to the Flash section in the Electrical Characteristics for information on flash data retention for different temperatures. 3.3 General Operating Conditions 3.3.1 General Operating Conditions Table 3.2. General Operating Conditions Symbol Parameter Min Typ TAMB Ambient temperature range VDDOP Operating supply voltage fAPB Internal APB clock frequency 48 MHz fAHB Internal AHB clock frequency 48 MHz -40 1.85 Max Unit 85 C 3.8 V 3.3.2 Environmental Latch-up sensitivity passed: 100 mA/1.5 x VSUPPLY(max) according to JEDEC JESD 78 method Class II, 85C. 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 10 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 3.4 Current Consumption Table 3.3. Current Consumption Symbol IEM0 IEM1 IEM2 IEM3 IEM4 Parameter EM0 current. No prescaling. Running prime number calculation code from Flash. EM1 current Condition Min Typ Max Unit 32 MHz HFXO, all peripheral clocks disabled, VDD= 3.0 V 200 A/ MHz 28 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 201 261 A/ MHz 21 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 203 263 A/ MHz 14 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 204 270 A/ MHz 11 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 207 273 A/ MHz 6.6 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 212 282 A/ MHz 1.2 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 244 A/ MHz 32 MHz HFXO, all peripheral clocks disabled, VDD= 3.0 V 50 A/ MHz 28 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 52 69 A/ MHz 21 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 53 71 A/ MHz 14 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 56 77 A/ MHz 11 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 57 80 A/ MHz 6.6 MHz HFRCO, all peripheral clocks disabled, VDD= 3.0 V 62 92 A/ MHz 1.2 MHz HFRCO. all peripheral clocks disabled, VDD= 3.0 V 114 A/ MHz EM2 current with RTC prescaled to 1 Hz, 32.768 kHz LFRCO, VDD= 3.0 V, TAMB=25C 1.1 A EM2 current with RTC prescaled to 1 Hz, 32.768 kHz LFRCO, VDD= 3.0 V, TAMB=85C 4.0 8.0 A VDD= 3.0 V, TAMB=25C 0.9 A VDD= 3.0 V, TAMB=85C 3.8 7.8 A VDD= 3.0 V, TAMB=25C 0.02 A VDD= 3.0 V, TAMB=85C 0.25 0.7 A EM2 current EM3 current EM4 current 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 11 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 3.5 Transition between Energy Modes Table 3.4. Energy Modes Transitions Symbol Parameter Min tEM10 Transition time from EM1 to EM0 tEM20 Typ Max Unit 1 HF core CLK cycles Transition time from EM2 to EM0 2 s tEM30 Transition time from EM3 to EM0 2 s tEM40 Transition time from EM4 to EM0 163 s 0 1 Core wakeup time only. 3.6 Power Management The EFM32LG requires the AVDD_x, VDD_DREG and IOVDD_x pins to be connected together (with optional filter) at the PCB level. For practical schematic recommendations, please see the application note, "AN0002 EFM32 Hardware Design Considerations". Table 3.5. Power Management Symbol Parameter Condition Min Typ Max VBODextthr- BOD threshold on falling external supply voltage 1.82 1.85 V VBODintthr- BOD threshold on falling internally regulated supply voltage 1.62 1.68 V VBODextthr+ BOD threshold on rising external supply voltage VPORthr+ Power-on Reset (POR) threshold on rising external supply voltage tRESET Delay from reset is released until program execution starts Applies to Power-on Reset, Brown-out Reset and pin reset. 163 s CDECOUPLE Voltage regulator decoupling capacitor. X5R capacitor recommended. Apply between DECOUPLE pin and GROUND 1 F 1.85 Unit V 1.98 V 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 12 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 3.7 Flash Table 3.6. Flash Symbol Parameter ECFLASH Flash erase cycles before failure Condition Min TAMB<150C RETFLASH Flash data retention Typ Max Unit 20000 cycles 10000 h TAMB<85C 10 years TAMB<70C 20 years s tW_PROG Word (32-bit) programming time 20 tPERASE Page erase time 20 20.4 20.8 ms 40 40.8 41.6 ms tDERASE Device erase time 161.6 ms IERASE Erase current 7 1 mA IWRITE Write current 7 1 mA VFLASH Supply voltage during flash erase and write 1.8 3.8 V 1 Measured at 25C 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 13 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 3.8 General Purpose Input Output Table 3.7. GPIO Symbol Parameter VIOIL Input low voltage VIOIH Input high voltage VIOOH VIOOL Condition Min Typ Max Unit 0.3VDD V 0.7VDD V Sourcing 6 mA, VDD=1.85 V, GPIO_Px_CTRL DRIVEMODE = STANDARD 0.75VDD V Sourcing 6 mA, VDD=3.0 V, GPIO_Px_CTRL DRIVEMODE = STANDARD 0.95VDD V Sourcing 20 mA, VDD=1.85 V, GPIO_Px_CTRL DRIVEMODE = HIGH 0.7VDD V Sourcing 20 mA, VDD=3.0 V, GPIO_Px_CTRL DRIVEMODE = HIGH 0.9VDD V Output high voltage Sinking 6 mA, VDD=1.85 V, GPIO_Px_CTRL DRIVEMODE = STANDARD 0.25VDD V Sinking 6 mA, VDD=3.0 V, GPIO_Px_CTRL DRIVEMODE = STANDARD 0.05VDD V Sinking 20 mA, VDD=1.85 V, GPIO_Px_CTRL DRIVEMODE = HIGH 0.3VDD V Sinking 20 mA, VDD=3.0 V, GPIO_Px_CTRL DRIVEMODE = HIGH 0.1VDD V Output low voltage IIOLEAK Input leakage current RPU I/O pin pull-up resistor 40 kOhm RPD I/O pin pull-down resistor 40 kOhm RIOESD Internal ESD series resistor 200 Ohm tIOGLITCH Pulse width of pulses to be removed by the glitch suppression filter tIOOF VIOHYST High Impedance IO connected to GROUND or Vdd +/-25 nA 10 50 ns 0.5 mA drive strength and load capacitance CL=12.5-25pF. 20+0.1CL 250 ns 2mA drive strength and load capacitance CL=350-600pF 20+0.1CL 250 ns Output fall time I/O pin hysteresis (VIOTHR+ - VIOTHR-) VDD = 1.85 - 3.8 V 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 0.1VDD 14 V www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.1. Typical Low-Level Output Current, 2V Supply Voltage 5 0.20 4 Low- Level Output Current [m A] Low- Level Output Current [m A] 0.15 0.10 3 2 0.05 1 - 40C 25C 85C 0.00 0.0 0.5 1.5 1.0 Low- Level Output Voltage [V] - 40C 25C 85C 0 0.0 2.0 GPIO_Px_CTRL DRIVEMODE = LOWEST 0.5 1.5 1.0 Low- Level Output Voltage [V] 2.0 GPIO_Px_CTRL DRIVEMODE = LOW 45 20 40 35 Low- Level Output Current [m A] Low- Level Output Current [m A] 15 10 30 25 20 15 5 10 5 - 40C 25C 85C 0 0.0 0.5 1.5 1.0 Low- Level Output Voltage [V] 0 0.0 2.0 GPIO_Px_CTRL DRIVEMODE = STANDARD 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 - 40C 25C 85C 0.5 1.5 1.0 Low- Level Output Voltage [V] 2.0 GPIO_Px_CTRL DRIVEMODE = HIGH 15 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.2. Typical High-Level Output Current, 2V Supply Voltage 0.00 0.0 - 40C 25C 85C - 40C 25C 85C -0.5 High- Level Output Current [m A] High- Level Output Current [m A] -0.05 -0.10 -1.0 -1.5 -0.15 -2.0 -0.20 0.0 1.5 0.5 1.0 High- Level Output Voltage [V] -2.5 0.0 2.0 GPIO_Px_CTRL DRIVEMODE = LOWEST 1.5 0.5 1.0 High- Level Output Voltage [V] 2.0 GPIO_Px_CTRL DRIVEMODE = LOW 0 0 - 40C 25C 85C - 40C 25C 85C -10 High- Level Output Current [m A] High- Level Output Current [m A] -5 -10 -20 -30 -15 -40 -20 0.0 1.5 0.5 1.0 High- Level Output Voltage [V] -50 0.0 2.0 GPIO_Px_CTRL DRIVEMODE = STANDARD 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 1.5 0.5 1.0 High- Level Output Voltage [V] 2.0 GPIO_Px_CTRL DRIVEMODE = HIGH 16 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 0.5 10 0.4 8 Low- Level Output Current [m A] Low- Level Output Current [m A] Figure 3.3. Typical Low-Level Output Current, 3V Supply Voltage 0.3 0.2 0.1 6 4 2 - 40C 25C 85C 0.0 0.0 0.5 1.5 1.0 2.0 Low- Level Output Voltage [V] 2.5 - 40C 25C 85C 0 0.0 3.0 GPIO_Px_CTRL DRIVEMODE = LOWEST 0.5 1.5 1.0 2.0 Low- Level Output Voltage [V] 2.5 3.0 GPIO_Px_CTRL DRIVEMODE = LOW 40 50 35 40 Low- Level Output Current [m A] Low- Level Output Current [m A] 30 25 20 15 30 20 10 10 5 0 0.0 - 40C 25C 85C 0.5 1.5 1.0 2.0 Low- Level Output Voltage [V] 2.5 - 40C 25C 85C 0 0.0 3.0 GPIO_Px_CTRL DRIVEMODE = STANDARD 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 0.5 1.5 1.0 2.0 Low- Level Output Voltage [V] 2.5 3.0 GPIO_Px_CTRL DRIVEMODE = HIGH 17 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.4. Typical High-Level Output Current, 3V Supply Voltage 0.0 0 - 40C 25C 85C - 40C 25C 85C -1 High- Level Output Current [m A] High- Level Output Current [m A] -0.1 -0.2 -0.3 -2 -3 -4 -0.4 -5 -0.5 0.0 0.5 1.5 1.0 2.0 High- Level Output Voltage [V] 2.5 -6 0.0 3.0 GPIO_Px_CTRL DRIVEMODE = LOWEST 2.5 3.0 0 - 40C 25C 85C - 40C 25C 85C -10 High- Level Output Current [m A] -10 High- Level Output Current [m A] 1.5 1.0 2.0 High- Level Output Voltage [V] GPIO_Px_CTRL DRIVEMODE = LOW 0 -20 -30 -40 -50 0.0 0.5 -20 -30 -40 0.5 1.5 1.0 2.0 High- Level Output Voltage [V] 2.5 -50 0.0 3.0 GPIO_Px_CTRL DRIVEMODE = STANDARD 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 0.5 1.5 1.0 2.0 High- Level Output Voltage [V] 2.5 3.0 GPIO_Px_CTRL DRIVEMODE = HIGH 18 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.5. Typical Low-Level Output Current, 3.8V Supply Voltage 0.8 14 0.7 12 Low- Level Output Current [m A] Low- Level Output Current [m A] 0.6 0.5 0.4 0.3 10 8 6 4 0.2 2 0.1 0.0 0.0 - 40C 25C 85C 0.5 1.5 1.0 2.0 2.5 Low- Level Output Voltage [V] 3.0 - 40C 25C 85C 0 0.0 3.5 1.5 1.0 2.0 2.5 Low- Level Output Voltage [V] 3.0 50 50 40 40 30 20 10 30 20 10 - 40C 25C 85C 0 0.0 3.5 GPIO_Px_CTRL DRIVEMODE = LOW Low- Level Output Current [m A] Low- Level Output Current [m A] GPIO_Px_CTRL DRIVEMODE = LOWEST 0.5 0.5 1.5 1.0 2.0 2.5 Low- Level Output Voltage [V] 3.0 - 40C 25C 85C 0 0.0 3.5 GPIO_Px_CTRL DRIVEMODE = STANDARD 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 0.5 1.5 1.0 2.0 2.5 Low- Level Output Voltage [V] 3.0 3.5 GPIO_Px_CTRL DRIVEMODE = HIGH 19 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.6. Typical High-Level Output Current, 3.8V Supply Voltage 0.0 -0.1 0 - 40C 25C 85C -1 - 40C 25C 85C -2 High- Level Output Current [m A] High- Level Output Current [m A] -0.2 -0.3 -0.4 -0.5 -3 -4 -5 -6 -0.6 -7 -0.7 -0.8 0.0 -8 0.5 1.5 1.0 2.0 2.5 High- Level Output Voltage [V] 3.0 -9 0.0 3.5 GPIO_Px_CTRL DRIVEMODE = LOWEST 3.0 3.5 0 - 40C 25C 85C - 40C 25C 85C -10 High- Level Output Current [m A] -10 High- Level Output Current [m A] 1.5 1.0 2.0 2.5 High- Level Output Voltage [V] GPIO_Px_CTRL DRIVEMODE = LOW 0 -20 -30 -40 -50 0.0 0.5 -20 -30 -40 0.5 1.5 1.0 2.0 2.5 High- Level Output Voltage [V] 3.0 -50 0.0 3.5 GPIO_Px_CTRL DRIVEMODE = STANDARD 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 0.5 1.5 1.0 2.0 2.5 High- Level Output Voltage [V] 3.0 3.5 GPIO_Px_CTRL DRIVEMODE = HIGH 20 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 3.9 Oscillators 3.9.1 LFXO Table 3.8. LFXO Symbol Parameter Condition Min Typ Max fLFXO Supported nominal crystal frequency ESRLFXO Supported crystal equivalent series resistance (ESR) CLFXOL Supported crystal external load range X DCLFXO Duty cycle 48 ILFXO Current consumption for core and buffer after startup. ESR=30 kOhm, CL=10 pF, LFXOBOOST in CMU_CTRL is 1 190 nA tLFXO Start- up time. ESR=30 kOhm, CL=10 pF, 40% - 60% duty cycle has been reached, LFXOBOOST in CMU_CTRL is 1 400 ms 32.768 30 1 Unit kHz 120 kOhm 25 pF 50 53.5 % 1 See Minimum Load Capacitance (CLFXOL) Requirement For Safe Crystal Startup in energyAware Designer in Simplicity Studio For safe startup of a given crystal, the energyAware Designer in Simplicity Studio contains a tool to help users configure both load capacitance and software settings for using the LFXO. For details regarding the crystal configuration, the reader is referred to application note "AN0016 EFM32 Oscillator Design Consideration". 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 21 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 3.9.2 HFXO Table 3.9. HFXO Symbol Parameter fHFXO Supported nominal crystal Frequency ESRHFXO The transconductance of the HFXO input transistor at crystal startup CHFXOL Supported crystal external load range DCHFXO Duty cycle tHFXO Min Typ Current consumption for HFXO after startup Startup time Max 4 HFXOBOOST in CMU_CTRL equals 0b11 Unit 48 MHz Supported crystal Crystal frequency 32 MHz equivalent series reCrystal frequency 4 MHz sistance (ESR) gmHFXO IHFXO Condition 30 60 Ohm 400 1500 Ohm 20 mS 5 25 pF 46 50 54 % 4 MHz: ESR=400 Ohm, CL=20 pF, HFXOBOOST in CMU_CTRL equals 0b11 85 A 32 MHz: ESR=30 Ohm, CL=10 pF, HFXOBOOST in CMU_CTRL equals 0b11 165 A 32 MHz: ESR=30 Ohm, CL=10 pF, HFXOBOOST in CMU_CTRL equals 0b11 400 s 3.9.3 LFRCO Table 3.10. LFRCO Symbol Parameter fLFRCO Oscillation frequency , VDD= 3.0 V, TAMB=25C 32.768 tLFRCO Startup time not including software calibration 150 s ILFRCO Current consumption 190 nA TUNESTEPL- Frequency step for LSB change in TUNING value 1.5 % FRCO Condition 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 Min 22 Typ Max Unit kHz www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.7. Calibrated LFRCO Frequency vs Temperature and Supply Voltage 42 42 - 40C 25C 85C 40 40 38 Frequency [kHz] Frequency [kHz] 38 36 34 34 32 32 30 1.8 2.2 2.6 3.0 3.4 1.8 V 3V 3.8 V 36 30 -40 3.8 -15 Vdd [V] 5 25 Tem perature [C] 45 Typ Max 65 85 3.9.4 HFRCO Table 3.11. HFRCO Symbol fHFRCO tHFRCO_settling IHFRCO Parameter Oscillation frequency, VDD= 3.0 V, TAMB=25C Settling time after start-up Current consumption DCHFRCO Duty cycle TUNESTEPH- Frequency step for LSB change in TUNING value FRCO Condition Min Unit 28 MHz frequency band 28 MHz 21 MHz frequency band 21 MHz 14 MHz frequency band 14 MHz 11 MHz frequency band 11 MHz 1 MHz 2 MHz 7 MHz frequency band 6.6 1 MHz frequency band 1.2 fHFRCO = 14 MHz 0.6 Cycles fHFRCO = 28 MHz 106 A fHFRCO = 21 MHz 93 A fHFRCO = 14 MHz 77 A fHFRCO = 11 MHz 72 A fHFRCO = 6.6 MHz 63 A fHFRCO = 1.2 MHz 22 A fHFRCO = 14 MHz 48.5 50 51 % 0.3 % 1 7 MHz for devices with prod. rev. < 19. 1 MHz for devices with prod. rev. < 19. 2 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 23 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.8. Calibrated HFRCO 11 MHz Band Frequency vs Supply Voltage and Temperature 11.15 11.20 11.15 11.10 1.8 V 3V 3.8 V 11.10 11.00 10.95 Frequency [MHz] Frequency [MHz] 11.05 - 40C 25C 85C 11.05 11.00 10.95 10.90 10.90 10.85 10.80 1.8 10.85 2.2 2.6 3.0 3.4 10.80 -40 3.8 -15 Vdd [V] 5 25 Tem perature [C] 45 65 85 Figure 3.9. Calibrated HFRCO 14 MHz Band Frequency vs Supply Voltage and Temperature 14.15 14.15 - 40C 25C 85C 14.10 14.10 14.05 Frequency [MHz] Frequency [MHz] 14.05 14.00 14.00 13.95 13.95 13.90 13.90 13.85 1.8 1.8 V 3V 3.8 V 2.2 2.6 3.0 3.4 13.85 -40 3.8 -15 Vdd [V] 5 25 Tem perature [C] 45 65 85 Figure 3.10. Calibrated HFRCO 21 MHz Band Frequency vs Supply Voltage and Temperature 21.2 21.2 - 40C 25C 85C 21.1 21.1 21.0 Frequency [MHz] Frequency [MHz] 21.0 20.9 20.9 20.8 20.8 20.7 20.7 20.6 1.8 1.8 V 3V 3.8 V 2.2 2.6 3.0 3.4 20.6 -40 3.8 Vdd [V] 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 24 -15 5 25 Tem perature [C] 45 65 85 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.11. Calibrated HFRCO 28 MHz Band Frequency vs Supply Voltage and Temperature 28.1 28.0 28.0 27.9 27.9 Frequency [MHz] Frequency [MHz] 28.1 27.8 27.7 27.6 27.8 27.7 27.6 - 40C 25C 85C 27.5 27.4 1.8 1.8 V 3V 3.8 V 2.2 2.6 3.0 3.4 27.5 27.4 -40 3.8 -15 Vdd [V] 5 25 Tem perature [C] 45 Typ Max 65 85 3.9.5 ULFRCO Table 3.12. ULFRCO Symbol Parameter Condition Min fULFRCO Oscillation frequency 25C, 3V TCULFRCO Temperature coefficient 0.05 %/C VCULFRCO Supply voltage coefficient -18.2 %/V 0.8 Unit 1.5 kHz 3.10 Analog Digital Converter (ADC) Table 3.13. ADC Symbol Parameter VADCIN Input voltage range Condition Min Single ended Differential VADCREFIN Input range of external reference voltage, single ended and differential Typ Max Unit 0 VREF V -VREF/2 VREF/2 V 1.25 VDD V VADCREFIN_CH7 Input range of external negative reference voltage on channel 7 See VADCREFIN 0 VDD - 1.1 V VADCREFIN_CH6 Input range of external positive reference voltage on channel 6 See VADCREFIN 0.625 VDD V 0 VDD V VADCCMIN Common mode input range IADCIN Input current 2pF sampling capacitors 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 25 <100 nA www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Symbol Parameter CMRRADC Analog input common mode rejection ratio IADC Average active current IADCREF Current consumption of internal voltage reference CADCIN Input capacitance RADCIN Input ON resistance RADCFILT Input RC filter resistance CADCFILT Input RC filter/decoupling capacitance fADCCLK ADC Clock Frequency tADCCONV Min Typ Max Acquisition time tADCACQVDD3 Required acquisition time for VDD/3 reference Unit 65 dB 1 MSamples/s, 12 bit, external reference 351 A 10 kSamples/s 12 bit, internal 1.25 V reference, WARMUPMODE in ADCn_CTRL set to 0b00 67 A 10 kSamples/s 12 bit, internal 1.25 V reference, WARMUPMODE in ADCn_CTRL set to 0b01 63 A 10 kSamples/s 12 bit, internal 1.25 V reference, WARMUPMODE in ADCn_CTRL set to 0b10 64 A Internal voltage reference 65 A 2 pF 1 MOhm 10 250 kOhm fF 13 MHz 6 bit 7 ADCCLK Cycles 8 bit 11 ADCCLK Cycles 12 bit 13 ADCCLK Cycles 1 256 ADCCLK Cycles Conversion time tADCACQ tADCSTART Condition Programmable 2 s Startup time of reference generator and ADC core in NORMAL mode 5 s Startup time of reference generator and ADC core in KEEPADCWARM mode 1 s 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 26 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Symbol SNRADC SINADADC Parameter Signal to Noise Ratio (SNR) SIgnal-to-Noise And Distortion-ratio (SINAD) Condition Min Typ Max Unit 1 MSamples/s, 12 bit, single ended, internal 1.25V reference 59 dB 1 MSamples/s, 12 bit, single ended, internal 2.5V reference 63 dB 1 MSamples/s, 12 bit, single ended, VDD reference 65 dB 1 MSamples/s, 12 bit, differential, internal 1.25V reference 60 dB 1 MSamples/s, 12 bit, differential, internal 2.5V reference 65 dB 1 MSamples/s, 12 bit, differential, 5V reference 54 dB 1 MSamples/s, 12 bit, differential, VDD reference 67 dB 1 MSamples/s, 12 bit, differential, 2xVDD reference 69 dB 200 kSamples/s, 12 bit, single ended, internal 1.25V reference 62 dB 200 kSamples/s, 12 bit, single ended, internal 2.5V reference 63 dB 200 kSamples/s, 12 bit, single ended, VDD reference 67 dB 200 kSamples/s, 12 bit, differential, internal 1.25V reference 63 dB 200 kSamples/s, 12 bit, differential, internal 2.5V reference 66 dB 200 kSamples/s, 12 bit, differential, 5V reference 66 dB 200 kSamples/s, 12 bit, differential, VDD reference 69 dB 200 kSamples/s, 12 bit, differential, 2xVDD reference 70 dB 1 MSamples/s, 12 bit, single ended, internal 1.25V reference 58 dB 1 MSamples/s, 12 bit, single ended, internal 2.5V reference 62 dB 1 MSamples/s, 12 bit, single ended, VDD reference 64 dB 1 MSamples/s, 12 bit, differential, internal 1.25V reference 60 dB 1 MSamples/s, 12 bit, differential, internal 2.5V reference 64 dB 1 MSamples/s, 12 bit, differential, 5V reference 54 dB 1 MSamples/s, 12 bit, differential, VDD reference 66 dB 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 27 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Symbol SFDRADC Parameter Spurious-Free Dynamic Range (SFDR) Condition Min Typ Max Unit 1 MSamples/s, 12 bit, differential, 2xVDD reference 68 dB 200 kSamples/s, 12 bit, single ended, internal 1.25V reference 61 dB 200 kSamples/s, 12 bit, single ended, internal 2.5V reference 65 dB 200 kSamples/s, 12 bit, single ended, VDD reference 66 dB 200 kSamples/s, 12 bit, differential, internal 1.25V reference 63 dB 200 kSamples/s, 12 bit, differential, internal 2.5V reference 66 dB 200 kSamples/s, 12 bit, differential, 5V reference 66 dB 200 kSamples/s, 12 bit, differential, VDD reference 68 dB 200 kSamples/s, 12 bit, differential, 2xVDD reference 69 dB 1 MSamples/s, 12 bit, single ended, internal 1.25V reference 64 dBc 1 MSamples/s, 12 bit, single ended, internal 2.5V reference 76 dBc 1 MSamples/s, 12 bit, single ended, VDD reference 73 dBc 1 MSamples/s, 12 bit, differential, internal 1.25V reference 66 dBc 1 MSamples/s, 12 bit, differential, internal 2.5V reference 77 dBc 1 MSamples/s, 12 bit, differential, VDD reference 76 dBc 1 MSamples/s, 12 bit, differential, 2xVDD reference 75 dBc 1 MSamples/s, 12 bit, differential, 5V reference 69 dBc 200 kSamples/s, 12 bit, single ended, internal 1.25V reference 75 dBc 200 kSamples/s, 12 bit, single ended, internal 2.5V reference 75 dBc 200 kSamples/s, 12 bit, single ended, VDD reference 76 dBc 200 kSamples/s, 12 bit, differential, internal 1.25V reference 79 dBc 200 kSamples/s, 12 bit, differential, internal 2.5V reference 79 dBc 200 kSamples/s, 12 bit, differential, 5V reference 78 dBc 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 28 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Symbol VADCOFFSET Parameter Condition Min Typ Max Unit 200 kSamples/s, 12 bit, differential, VDD reference 79 dBc 200 kSamples/s, 12 bit, differential, 2xVDD reference 79 dBc After calibration, single ended 0.3 mV After calibration, differential 0.3 mV Offset voltage -1.92 mV/C Thermometer output gradient -6.3 ADC Codes/ C DNLADC Differential non-linearity (DNL) 0.7 LSB INLADC Integral non-linearity (INL), End point method 1.2 LSB MCADC No missing codes TGRADADCTH GAINED OFFSETED 11.999 1 12 2 0.033 %/C 2 0.03 3 %/C 2 0.7 3 LSB/C 2 0.62 3 LSB/C 1.25V reference 0.01 2.5V reference 0.01 1.25V reference 0.2 2.5V reference 0.2 Gain error drift Offset error drift bits 3 1 On the average every ADC will have one missing code, most likely to appear around 2048 +/- n*512 where n can be a value in the set {-3, -2, -1, 1, 2, 3}. There will be no missing code around 2048, and in spite of the missing code the ADC will be monotonic at all times so that a response to a slowly increasing input will always be a slowly increasing output. Around the one code that is missing, the neighbour codes will look wider in the DNL plot. The spectra will show spurs on the level of -78dBc for a full scale input for chips that have the missing code issue. 2 Typical numbers given by abs(Mean) / (85 - 25). 3 Max number given by (abs(Mean) + 3x stddev) / (85 - 25). The integral non-linearity (INL) and differential non-linearity parameters are explained in Figure 3.12 (p. 30) and Figure 3.13 (p. 30) , respectively. 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 29 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.12. Integral Non-Linearity (INL) Digital ouput code INL= | [(VD- VSS)/ VLSBIDEAL] - D| where 0 < D < 2 N - 1 4095 4094 Actual ADC tranfer function before offset and gain correction 4093 4092 Actual ADC tranfer function after offset and gain correction INL Error (End Point INL) Ideal transfer curve 3 2 1 VOFFSET 0 Analog Input Figure 3.13. Differential Non-Linearity (DNL) Digital ouput code DNL= | [(VD+ 1 - VD)/ VLSBIDEAL] - 1| where 0 < D < 2 N - 2 Full Scale Range 4095 4094 Example: Adjacent input value VD+ 1 corrresponds to digital output code D+ 1 4093 4092 Actual transfer function with one m issing code. Example: Input value VD corrresponds to digital output code D Code width = 2 LSB DNL= 1 LSB Ideal transfer curve 5 0.5 LSB Ideal spacing between two adjacent codes VLSBIDEAL= 1 LSB 4 3 2 1 Ideal 50% Transition Point Ideal Code Center 0 Analog Input 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 30 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers 3.10.1 Typical performance Figure 3.14. ADC Frequency Spectrum, Vdd = 3V, Temp = 25C 1.25V Reference 2.5V Reference 2XVDDVSS Reference 5VDIFF Reference VDD Reference 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 31 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.15. ADC Integral Linearity Error vs Code, Vdd = 3V, Temp = 25C 1.25V Reference 2.5V Reference 2XVDDVSS Reference 5VDIFF Reference VDD Reference 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 32 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.16. ADC Differential Linearity Error vs Code, Vdd = 3V, Temp = 25C 1.25V Reference 2.5V Reference 2XVDDVSS Reference 5VDIFF Reference VDD Reference 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 33 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.17. ADC Absolute Offset, Common Mode = Vdd /2 5 2.0 Vref= 1V25 Vref= 2V5 Vref= 2XVDDVSS Vref= 5VDIFF Vref= VDD 4 1.5 2 Actual Offset [LSB] Actual Offset [LSB] 3 VRef= 1V25 VRef= 2V5 VRef= 2XVDDVSS VRef= 5VDIFF VRef= VDD 1 0 -1 1.0 0.5 0.0 -2 -0.5 -3 -4 2.0 2.2 2.4 2.6 2.8 3.0 Vdd (V) 3.2 3.4 3.6 -1.0 -40 3.8 Offset vs Supply Voltage, Temp = 25C -15 5 25 Tem p (C) 45 65 85 Offset vs Temperature, Vdd = 3V Figure 3.18. ADC Dynamic Performance vs Temperature for all ADC References, Vdd = 3V 79.4 71 2XVDDVSS 70 1V25 79.2 Vdd 69 79.0 67 5VDIFF 2V5 66 SFDR [dB] SNR [dB] 68 Vdd 2V5 78.8 78.6 2XVDDVSS 78.4 65 78.2 64 63 -40 -15 5 25 Tem perature [C] 45 65 5VDIFF 1V25 85 78.0 -40 Signal to Noise Ratio (SNR) 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 -15 5 25 Tem perature [C] 45 65 85 Spurious-Free Dynamic Range (SFDR) 34 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Figure 3.19. ADC Temperature sensor readout 2600 Vdd= 1.8 Vdd= 3 Vdd= 3.8 Sensor readout 2500 2400 2300 2200 2100 -40 -25 -15 -5 5 15 25 35 Tem perature [C] 45 55 65 75 85 3.11 Digital Analog Converter (DAC) Table 3.14. DAC Symbol VDACOUT VDACCM IDAC Parameter Output voltage range Condition Min Sample rate fDAC DAC clock frequency VDD V VDD voltage reference, differential -VDD VDD V 0 VDD V 500 kSamples/s, 12bit 400 A 100 kSamples/s, 12 bit 200 A 38 A 500 ksamples/s Continuous Mode CYCDACCONV Clock cyckles per conversion tDACCONV Conversion time tDACSETTLE Settling time SNRDAC Signal to Noise Ratio (SNR) Unit 0 1 kSamples/s 12 bit NORMAL SRDAC Max VDD voltage reference, single ended Output common mode voltage range Active current including references for 2 channels Typ 1000 kHz Sample/Hold Mode 250 kHz Sample/Off Mode 250 kHz 2 2 s 5 s 500 kSamples/s, 12 bit, single ended, internal 1.25V reference 58 dB 500 kSamples/s, 12 bit, single ended, internal 2.5V reference 59 dB 500 kSamples/s, 12 bit, differential, internal 1.25V reference 58 dB 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 35 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Symbol SNDRDAC SFDRDAC VDACOFFSET Parameter Signal to Noisepulse Distortion Ratio (SNDR) Spurious-Free Dynamic Range(SFDR) Condition Min Typ Max Unit 500 kSamples/s, 12 bit, differential, internal 2.5V reference 58 dB 500 kSamples/s, 12 bit, differential, VDD reference 59 dB 500 kSamples/s, 12 bit, single ended, internal 1.25V reference 57 dB 500 kSamples/s, 12 bit, single ended, internal 2.5V reference 54 dB 500 kSamples/s, 12 bit, differential, internal 1.25V reference 56 dB 500 kSamples/s, 12 bit, differential, internal 2.5V reference 53 dB 500 kSamples/s, 12 bit, differential, VDD reference 55 dB 500 kSamples/s, 12 bit, single ended, internal 1.25V reference 62 dBc 500 kSamples/s, 12 bit, single ended, internal 2.5V reference 56 dBc 500 kSamples/s, 12 bit, differential, internal 1.25V reference 61 dBc 500 kSamples/s, 12 bit, differential, internal 2.5V reference 55 dBc 500 kSamples/s, 12 bit, differential, VDD reference 60 dBc After calibration, single ended 2 mV After calibration, differential 2 mV Offset voltage DNLDAC Differential non-linearity 1 LSB INLDAC Integral non-linearity 5 LSB MCDAC No missing codes 12 bits 3.12 Operational Amplifier (OPAMP) The electrical characteristics for the Operational Amplifiers are based on simulations. Table 3.15. OPAMP Symbol IOPAMP Parameter Active Current Condition Min Typ Max Unit (OPA2)BIASPROG=0xF, (OPA2)HALFBIAS=0x0, Unity Gain 400 A (OPA2)BIASPROG=0x7, (OPA2)HALFBIAS=0x1, Unity Gain 100 A (OPA2)BIASPROG=0x0, (OPA2)HALFBIAS=0x1, Unity Gain 13 A 2013-11-22 - EFM32LG880FXX - d0117_Rev1.21 36 www.silabs.com Preliminary ...the world's most energy friendly microcontrollers Symbol GOL GBWOPAMP PMOPAMP Parameter Open Loop Gain Gain Bandwidth Product Phase Margin RINPUT Input Resistance RLOAD Load Resistance ILOAD_DC DC Load Current VINPUT Input Voltage VOUTPUT VOFFSET Condition Min Typ Max (OPA2)BIASPROG=0xF, (OPA2)HALFBIAS=0x0 101 dB (OPA2)BIASPROG=0x7, (OPA2)HALFBIAS=0x1 98 dB (OPA2)BIASPROG=0x0, (OPA2)HALFBIAS=0x1 91 dB (OPA2)BIASPROG=0xF, (OPA2)HALFBIAS=0x0 6.1 MHz (OPA2)BIASPROG=0x7, (OPA2)HALFBIAS=0x1 1.8 MHz (OPA2)BIASPROG=0x0, (OPA2)HALFBIAS=0x1 0.25 MHz (OPA2)BIASPROG=0xF, (OPA2)HALFBIAS=0x0, CL=75 pF 64 (OPA2)BIASPROG=0x7, (OPA2)HALFBIAS=0x1, CL=75 pF 58 (OPA2)BIASPROG=0x0, (OPA2)HALFBIAS=0x1, CL=75 pF 58 100 200 NOPAMP Mohm Ohm 11 mA OPAxHCMDIS=0 VSS VDD V OPAxHCMDIS=1 VSS VDD-1.2 V VSS VDD V Output Voltage Unity Gain, VSS