EFR32MG21 Mighty Gecko Multiprotocol Wireless SoC Family Data Sheet The Mighty Gecko multiprotocol family of SoCs is part of the Wire- KEY FEATURES less Gecko portfolio. Mighty Gecko SoCs are ideal for enabling en- ergy-friendly multiprotocol, multiband networking for IoT devices. 32-bit ARM Cortex-M33 core with 80 MHz maximum operating frequency The single-die solution combines an 80 MHz ARM Cortex-M33 with a high performance Up to 1024 kB of flash and 96 kB of RAM 2.4 GHz radio to provide an industry-leading, energy efficient wireless SoC for IoT con- 12-channel Peripheral Reflex System nected applications. 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 Robust peripheral set and up to 20 GPIO Lighting in a 4x4 QFN package Connected Home Gateways and Digital Assistants Building Automation and Security Core / Memory Clock Management Energy Security Management Crypto Acceleration Secure Boot with HF Crystal HF Fast Startup Root of Trust and True Random TM Oscillator RC Oscillator Voltage RC Oscillator ARM Cortex M33 processor Secure Loader Number Generator Flash Program Regulator with DSP extensions, Memory DPA FPU and Trust Zone EM23 HF RC EUI Countermeasures Oscillator Brown-Out Secure Debug Detector Authentication LF Crystal Ultra LF RC LF LDMA ETM Secure Debug RAM Memory Power-On Reset Controller Oscillator Oscillator RC Oscillator Secure Element 32-bit bus Peripheral Reflex System Radio Transceiver Serial I/O Ports Timers and Triggers Analog I/F Interfaces External DEMOD RF Frontend USART Timer/Counter Protocol Timer IADC Interrupts I LNA Q General Analog PGA IFADC 2 Low Energy Timer Watchdog Timer I C Purpose I/O Comparator PA Real Time AGC Pin Reset Capture Counter Frequency PA Synth Back-Up Real MOD Pin Wakeup Time Counter Lowest power mode with peripheral operational: EM0Active EM1Sleep EM2Deep Sleep EM3Stop EM4Shutoff silabs.com Building a more connected world. Rev. 1.1 CRC FRC RAC BUFCEFR32MG21 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 Wide selection of MCU peripherals 12-bit 1 Msps SAR Analog to Digital Converter (ADC) High Performance 32-bit 80 MHz ARM Cortex -M33 with DSP instruction and floating-point unit for efficient signal 2 Analog Comparator (ACMP) processing Up to 20 General Purpose I/O pins with output state reten- Up to 1024 kB flash program memory tion and asynchronous interrupts Up to 96 kB RAM data memory 8 Channel DMA Controller 2.4 GHz radio operation 12 Channel Peripheral Reflex System (PRS) TX power up to 20 dBm 2 16-bit Timer/Counter Low Energy Consumption 3 Compare/Capture/PWM channels 8.8 mA RX current at 2.4 GHz (1 Mbps GFSK) 1 32-bit Timer/Counter 9.4 mA RX current at 2.4 GHz (250 kbps O-QPSK DSSS) 3 Compare/Capture/PWM channels 9.3 mA TX current 0 dBm output power at 2.4 GHz 32-bit Real Time Counter 33.8 mA TX current 10 dBm output power at 2.4 GHz 24-bit Low Energy Timer for waveform generation 50.9 A/MHz in Active Mode (EM0) 2 Watchdog Timer 5.0 A EM2 DeepSleep current 3 Universal Synchronous/Asynchronous Receiver/Trans- 2 mitter (UART/SPI/SmartCard(ISO 7816)/IrDA/I S) (96 kB RAM retention and RTC running from LFXO) 2 2 I C interface with SMBus support 4.5 A EM2 DeepSleep current Wide Operating Range (16 kB RAM retention and RTC running from LFRCO) 1.71 to 3.8 V single power supply High Receiver Performance -40 to 125 C ambient -104.5 dBm sensitivity 250 kbps O-QPSK DSSS Security -97.5 dBm sensitivity 1 Mbit/s GFSK Secure Boot with Root of Trust and Secure Loader (RTSL) -94.4 dBm sensitivity 2 Mbit/s GFSK Hardware Cryptographic Acceleration with DPA counter- -104.9 dBm sensitivity 125 kbps GFSK measures for AES128/256, SHA-1, SHA-2 (up to 256-bit), ECC (up to 256-bit), ECDSA, ECDH and J-Pake Supported Modulation Formats True Random Number Generator (TRNG) compliant with GFSK NIST SP800-90 and AIS-31 OQPSK ARM TrustZone Protocol Support Secure Debug with lock/unlock Bluetooth Low Energy (Bluetooth 5) QFN32 4x4 mm Package Zigbee 0.4 mm pitch Thread silabs.com Building a more connected world. Rev. 1.1 2