EFR32MG21A010F1024IM32-BR

Overview

The EFR32MG21A010F1024IM32-BR is a Mighty Gecko multiprotocol wireless System on Chip (SoC) from Silicon Labs, designed for IoT applications. It integrates an ARM Cortex-M33 core operating at up to 80 MHz with 1024 kB of flash memory and 96 kB of RAM. The device supports Bluetooth 5.1, Thread, and Zigbee protocols over a 2.4 GHz radio interface. Key electrical parameters include a maximum output power of 10 dBm, receive sensitivity of -94 dBm at 2 Mbps GFSK, and supply voltage range of 1.71 V to 3.8 V. Active current consumption is 8.8 mA during reception and 33.8 mA during transmission. It features a QFN-32 package with 20 GPIOs and interfaces including I2C, SPI, UART, and I2S.

Feature Summary

• Supports multiprotocol mesh networking including Bluetooth 5.1, Thread, and Zigbee
• Integrates ARM Cortex-M33 processor with Secure Vault hardware security
• Optimized for low-power operation in line-powered IoT devices
• Includes rich analog peripherals such as 12-bit ADC and DMA controller

Applications

• Connected lighting systems
• Smart home gateways
• Voice assistants
• Smart metering devices

Procurement Notes

Verify the specific suffix 'BR' indicates tape-and-reel packaging when sourcing components. Confirm that the 'A010' designation corresponds to the 10 dBm output power variant rather than higher power options available in the MG21 family. Ensure compatibility with Simplicity Studio 5 development tools for firmware deployment. Check regional availability as distribution status may vary by supplier region.

Selection Notes

Select this component for applications requiring simultaneous support for multiple 2.4 GHz mesh protocols without external radios. The 1024 kB flash capacity accommodates complex application logic and protocol stacks. Consider the 80 MHz clock speed for processing-intensive tasks. Verify that the 10 dBm output power meets link budget requirements for the intended deployment environment compared to higher power variants.

Part Context

This part belongs to the EFR32MG21 Series 2 Mighty Gecko family, which targets high-performance, secure, and low-power IoT connectivity. The MG21 series distinguishes itself with integrated Secure Vault technology for physical unclonable function (PUF) hardware security. It is optimized for line-powered applications where robust RF performance and multiprotocol flexibility are critical for next-generation connected products.

Replacement Considerations

EFR32MG21A020F1024IM32-BR offers higher output power (20 dBm) with identical memory and core specifications. EFR32MG21A010F1024IM32-B provides the same technical specifications but in tray packaging instead of tape-and-reel. Both are direct functional substitutes within the same product family.