RX21A The Power Analyzer and Electric Energy Meter MCU Renesas Electronics' RX21A microcontroller family is the ideal solution for compact electricity meters, offering compatible and optimized devices for 3-phase and single-phase electricity meter applications. The RX21A offers 50 MHz MONOS Flash performance, full 1.8 - 3.6 V Flash operation, DSP functions, seven separate 24-bit ADC modules, RTC, memory protection, AES hardware encryption, temperature sensor, up to 9 serial communications interfaces, and includes up to 512 Kbytes of Flash memory, 8 kbytes of data Flash and 64 kbytes of on chip SRAM in 64- to 100-pin packages. In combination with dedicated metrology firmware this all enables the design of compact electricity meters at lowest investment. The RX21A is supported by a complete suite of tools including software, debugger, and a meter evaluation platform that allows IEC type tests to be performed. Applications High accuracy electric energy meters Power Analyzer Key Benefits Full single-chip concept providing flexible software-defined metrology architecture, and application MCU True RX family concept that saves software investment thus future-proof Integration of dedicated meter features to reduce system cost and to make the design ultra-compact Same platform for both single-phase and 3-phase meters to ensure cost effective meter design Up to seven separate 24-bit DS ADC modules with PGA to realize featured 3-ph meter Factory calibrated variant (G specification) available that allows for super-high < 0.1 % accuracy over a greater than 6600 : 1 dynamic range, plus a 10 ppm/C bandgap temperature coefficient Full RTC with alarm, calibration, binary count mode, and anti-tamper function Calibrated temperature sensor to ease adjustments Various communication interfaces that allow easy connection of various modems Complete metrology firmware provided, enabling the design of precision single and multi-phase e-meters featuring true single-point calibration, active and reactive power calculation, harmonic content calculation, and energy pulse output generation. Extended dynamic range and higher accuracy automatically achieved through detection of G specification devices RX21A Block Diagram RX 32-BIT CPU 50 MHZ 78 DMIPS Digital Signal Processing MAC 48-bit RMPA 80-bit Barrel Shifter 32-bit SYSTEM TIMERS Event Link Controller Multifunction Pin Controller MTU2 2 x TMR 16-bit 6 ch 8-bit 2 ch ANALOG MEMORY 2 x I2C 7 x 24-bit ADC Zero-wait Flash 4 x SCI 7 x 10-bit ADC COMMUNICATION Data Mgmt. 2 x CMT 16-bit 2ch 1 x SCIX 2 x 10-bit DAC Interrupt Cont. WDT 2 x SPI 4 x Comp. I-WDT IrDA Temp. Sensor DTC/DMA 16 levels 8 pins Clock Generation 8-bit 1 ch OSC PLL IRC 14-bit 1 ch POR/LVD Calendar up to 512 KB SRAM up to 64 KB Data Flash 8 KB RTC Metering Tamper, MPU, AES Safety CAC, DOC, CRC www.renesas.com 2016.10 RX21A - The Power Analyzer and Electric Energy Meter MCU Key Features 32-bit RX CPU core Real-time clock Enhanced Harvard Architecture 50 MHz operating frequency (max.) ~ 165 DMIPS (1.8 - 3.6 V) DSP functions (MAC, RMPA, Barrel shifter) Full calendar with leap year; Alarm, calibration, binary count mode; 3 Time stamps for anti-tamper General Purpose Timers 6 channel 16-bit MTU2, 2x 2ch 16-bit CMT, 2 x 2ch 8-bit TMR Memory protection unit (MPU) Watchdog Timers Memory Line-up 1 channel 14-bit, 1 channel 8-bit 256 kbytes to 512 kbytes zero wait-state Flash 8 kbytes data Flash with background operation (BGO) function 32 kbytes to 64 kbytes SRAM Communications 5 x SCI (simple SPI, simple I2C), 2 x RSPI interfaces with CS, 1 x IrDA, 2 x Multi-Master I2C bus interface, GPIO Analog functions Low-power design and architecture 2.7 to 3.6 V operation 1.62 to 5.5 V operation (program and erase) Up to seven 24-bit ADC channels with PGA 200 A/MHz Operation, all peripherals active Up to 85 dB SINAD 0.9 A Deep standby with RTC running 0.45 A Standby mode Bandgap with guaranteed 30 ppm/C temp co. (typ. 10 ppm/C for G specification) Optimized System & Peripherals 4 channel comparator System Temperature sensor for measuring temperature within the chip Up to seven channels 10-bit ADC 4 channel DMA, Data Transfer Controller (DTC) Interrupt Controller Power On Reset (POR), Low Voltage Detection (LVD) AES Hardware encryption 50 MHz High speed oscillator, 125 kHz low speed oscillator, 32 kHz sub-system oscillator Event Link Controller (ELC) Operating temperature range -40C to +105C (G specification) -40C to +85C (D specification) Package line-up 64-pin to 100-pin Safety functions (CAC, DOC, CRC) Ordering Information Pin Count Flash ROM Data Flash RAM Package Part Number 100-pin 512 K 8K 64 K PLQP0100KB-A (14 x 14 mm, 0.5 mm pitch) R5F521A8BGFP 80-pin 512 K 8K 64 K PLQP0080KB-A (14 x 14mm, 0.5 mm pitch) R5F521A8BGFN 64-pin 512 K 8K 64 K PLQP0064KB-A (14 x 14mm, 0.5 mm pitch) R5F521A8BGFM 100-pin 384 K 8K 64 K PLQP0100KB-A (14 x 14 mm, 0.5 mm pitch) R5F521A7BGFP 80-pin 384 K 8K 64 K PLQP0080KB-A (14 x 14mm, 0.5 mm pitch) R5F521A7BGFN 64-pin 384 K 8K 64 K PLQP0064KB-A (14 x 14mm, 0.5 mm pitch) R5F521A7BGFM Note: The number of available 24-bit ADC modules depends on package (100-pin: 7 modules, 80-pin: 4, 64-pin: 3) Note: G-specified versions listed here. For less demanding applications a D-specified version including a 256 K Flash/32 K RAM option is available Before purchasing or using any Renesas Electronics products listed herein, please refer to the latest product manual and/or data sheet in advance. www.renesas.com (c) 2016 Renesas Electronics Europe. All rights reserved. Printed in Germany. Document No. R01PF0055ED0300