SiLEFR32MG21A020F768IM32-B
Overview
The EFR32MG21A020F768IM32-B is a high-performance, multiprotocol wireless SoC from Silicon Labs' Mighty Gecko Series 2 family. Built on an 80MHz ARM Cortex-M33 core with TrustZone, it provides up to 20dBm output power for robust 2.4GHz mesh networking using Zigbee, Thread, or Bluetooth 5.1 protocols. This device is optimized for line-powered IoT applications that require both high link budget and advanced hardware security.
Why Choose This Part
This SoC offers an industry-leading link budget with -104.9dBm sensitivity and 20dBm output power, significantly reducing the need for external range extenders. The integration of a dedicated security subsystem and an ARM Cortex-M33 core allows for complex application logic and robust encryption without sacrificing radio performance. Its 768kB flash and 64kB RAM provide ample headroom for large mesh stacks and over-the-air (OTA) updates.
Applications
Key Specifications
Getting Started
Developers should use the Simplicity Studio 5 IDE which includes the Silicon Labs GSDK and wireless protocol stacks. Hardware evaluation is best performed using the SLWSTK6006A Wireless Starter Kit with the appropriate radio board for Series 2 devices. For production, the EFR32MG21 requires careful RF layout and impedance matching to maintain its 20dBm performance across the 1.71V to 3.8V supply range.
Also Consider
