SiLEFR32MG21A020F1024IM32-BR
Overview
The EFR32MG21A020F1024IM32-BR is a high-performance wireless System on a Chip (SoC) from the Silicon Labs Mighty Gecko Series 2 family. It features an 80 MHz ARM Cortex-M33 core with 1024 kB of Flash and 96 kB of RAM, specifically designed for mesh networking protocols such as Zigbee, Thread, and Matter. This SoC integrates a 2.4 GHz radio capable of +20 dBm output power and includes specialized hardware for secure IoT connectivity.
Why Choose This Part
This SoC offers a significant link budget with its +20 dBm integrated power amplifier, reducing the need for external front-end modules. The ARM Cortex-M33 core provides advanced security features like TrustZone and a dedicated security engine for robust IoT protection. Its low-power architecture achieves 50.9 uA/MHz in active mode while supporting complex mesh stacks.
Applications
Getting Started
Engineers should use the Simplicity Studio 5 IDE, which provides the Gecko SDK and network analyzer tools for wireless debugging. For hardware evaluation, the xG21 Wireless Starter Kit (SLWSTK6006A) or the xG21 Radio Board (BRD4180A) are the standard platforms for prototyping with this 32-pin QFN device.
EFR32MG21 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Memory | Interfaces | Frequency | Modulation | RF Family/Standard | Rx Current | Stock |
|---|---|---|---|---|---|---|---|
| EFR32MG21A020F1024IM32-BR (this part) | — | — | — | — | — | — | 265,516 |
| EFR32MG21A020F1024IM32-B | 1024k | ADC, GPIO, I2C, I2.. | 2.4GHz | GFSK, O-QPSK | Bluetooth | 8.8mA | 1,954 |
| EFR32MG21B020F1024IM32-B | 1MB | I2C, I2S, SPI, IrD.. | 2.4GHz | DSSS, GFSK, O-QPSK | 802.15.4, Bluetooth | 8.8mA | 2,302 |
| EFR32MG21A020F768IM32-B | 768k | ADC, GPIO, I2C, I2.. | 2.4GHz | GFSK, O-QPSK | Bluetooth | 8.8mA | 405 |
