EFR32BG21B010F1024IM32-B

RF Transceiver ICS Overview

The EFR32BG21B010F1024IM32-B is a Mighty Gecko System on Chip (SoC) from Silicon Labs, integrating an ARM Cortex-M33 processor with a 2.4 GHz RF transceiver. It supports Bluetooth 5.1, Thread, and Zigbee protocols within a single QFN-32 package. The device features 1 MB of flash memory and 96 kB of RAM, operating at a maximum clock frequency of 80 MHz. Key electrical specifications include a transmit power of 10 dBm, a receive sensitivity of -94.4 dBm, and a data rate of up to 2 Mbps. It operates on a supply voltage range of 1.71 V to 3.8 V, with current consumption of 8.8 mA in receive mode and 33.8 mA in transmit mode.

RF Transceiver ICS Feature Summary

• Integrates an ARM Cortex-M33 core with a 2.4 GHz radio for unified processing and wireless communication.
• Supports multiprotocol mesh networking capabilities including Bluetooth 5.1, Thread, and Zigbee.
• Provides extensive peripheral interfaces such as I2C and USART for sensor and module connectivity.

RF Transceiver ICS Applications

• Smart home lighting and control systems
• Wireless door locks and security sensors
• HVAC thermostats and environmental monitors

RF Transceiver ICS Procurement Notes

Verify the specific suffix 'B' indicates the correct tape-and-reel or tray packaging configuration required for your assembly line. Confirm that the QFN-32 footprint matches your PCB design guidelines, particularly regarding the exposed thermal pad requirements for proper heat dissipation and soldering integrity during surface mount assembly.

RF Transceiver ICS Selection Notes

Select this model when a balance of moderate memory capacity and multiprotocol support is required for cost-sensitive applications. It is suitable for designs where Bluetooth 5.1 is sufficient and higher output power variants are not necessary. Consider alternative MG21 parts if Thread-only optimization is preferred over broader multiprotocol flexibility.

RF Transceiver ICS Part Context

This component belongs to the EFR32BG21 Mighty Gecko family, designed for low-power wireless IoT applications. It shares the same silicon architecture as other BG21 variants but differs in memory size and protocol stack support. The part number structure indicates the specific flash/RAM configuration and package type, distinguishing it from Blue Gecko or lower-performance Mighty Gecko models.

RF Transceiver ICS Replacement Considerations

Direct substitutes include EFR32MG21B010F1024IM32-B for multiprotocol compatibility or EFR32BG21A010F1024IM32-DR for reel-packaged alternatives. Ensure pinout and register compatibility when migrating between different memory configurations within the same family.