EFR32MG21A020F512IM32-BR

Overview

The EFR32MG21A020F512IM32-BR is a Mighty Gecko Series 2 RF System-on-Chip (SoC) manufactured by Silicon Labs. It integrates an ARM Cortex-M33 core operating at up to 80 MHz with 512 kB of flash memory and 64 kB of RAM. The device supports Bluetooth 5.1, Thread, and Zigbee protocols over a 2.4 GHz frequency range. Key electrical specifications include a maximum output power of 20 dBm, a receive sensitivity of -94.4 dBm, and a maximum data rate of 2 Mbps. It operates within a supply voltage range of 1.71 V to 3.8 V, with typical active currents of 8.8 mA during reception and 33.8 mA during transmission. The component is housed in a QFN-32 package.

Feature Summary

• Supports multiprotocol mesh networking including Bluetooth 5.1, Thread, and Zigbee for versatile IoT connectivity.
• Integrates a high-performance ARM Cortex-M33 processor with dedicated security subsystems and Secure Vault technology.

Applications

• Networked lighting systems
• Smart home gateways
• Voice assistants
• Smart meters

Procurement Notes

Verify the specific suffix 'BR' against the manufacturer's official documentation to confirm the tape-and-reel packaging configuration. Ensure that the selected variant matches the required memory capacity of 512 kB flash and 64 kB RAM for your application design. Cross-reference the RoHS compliance status and moisture sensitivity level details provided in the datasheet prior to finalizing procurement orders.

Selection Notes

Select this component when designing line-powered IoT devices requiring robust 2.4 GHz wireless performance combined with advanced security features. The integrated 20 dBm transmitter and high sensitivity ensure reliable communication links for mesh networks. Consider the 512 kB flash size relative to application firmware requirements and verify compatibility with Simplicity Studio development tools for efficient migration and debugging processes.

Part Context

This part belongs to the EFR32MG21 Mighty Gecko Series 2 family, which provides optimized solutions for connected products. The series emphasizes improved processing capabilities and reduced effective current consumption compared to previous generations. It utilizes the Secure Vault technology to mitigate IoT security vulnerabilities through physical unclonable functions and secure software features.

Replacement Considerations

Other variants within the EFR32MG21A020 series offer different memory configurations, such as 768 kB or 1024 kB flash options, while maintaining identical pinouts and RF characteristics. Verify that substitute parts match the specific 512 kB flash requirement if code space is constrained.