EFR32MG21A020F768IM32-BR

Overview

The EFR32MG21A020F768IM32-BR is a Mighty Gecko RF System-on-Chip from Silicon Labs, integrating an ARM Cortex-M33 core with a 2.4 GHz transceiver. It supports Bluetooth 5.1, Thread, and Zigbee protocols with mesh multiprotocol capabilities. The device features 768 kB of flash memory and 64 kB of RAM within a QFN-32 package. Key electrical parameters include a maximum output power of 20 dBm, receiver sensitivity of -94.4 dBm, and a maximum data rate of 2 Mbps. Operating voltage ranges from 1.71 V to 3.8 V, with receive current at 8.8 mA and transmit current at 33.8 mA. The unit operates between -40°C and +125°C.

Feature Summary

• Integrates ARM Cortex-M33 processor with 2.4 GHz radio for multiprotocol connectivity
• Supports simultaneous operation of Bluetooth 5.1, Thread, and Zigbee networks
• Provides high RF performance with 20 dBm output power and enhanced security features

Applications

• Smart home lighting and control systems
• Wireless sensor networks requiring mesh topology
• IoT devices utilizing Thread or Zigbee protocols
• Bluetooth Low Energy peripheral applications

Procurement Notes

Verify the specific suffix 'BR' against official Silicon Labs documentation to confirm reel packaging specifications. Ensure compatibility with required moisture sensitivity levels and reflow soldering profiles. Cross-reference the exact part number with manufacturer datasheets to validate pinout and thermal pad requirements before integration into final designs.

Selection Notes

Select this component when designing for multiprotocol environments requiring simultaneous Thread, Zigbee, and Bluetooth support. The 768 kB flash and 64 kB RAM configuration suits complex application logic. Consider the 20 dBm output power for extended range needs. Evaluate the QFN-32 package constraints for PCB layout and thermal management in compact form factors.

Part Context

This model belongs to the EFR32MG21 Mighty Gecko series, designed for next-generation connected products. It emphasizes increased processing capability and lower active current consumption compared to previous generations. The series targets secure IoT deployments with integrated hardware security features and robust wireless performance standards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.