EFR32MG21B010F768IM32-B

Overview

The EFR32MG21B010F768IM32-B is an RF System on a Chip from Silicon Labs, belonging to the Mighty Gecko family. It integrates an ARM Cortex-M33 core operating at a maximum clock frequency of 80 MHz with 20 GPIOs. The device supports Bluetooth and Zigbee protocols over a 2.4 GHz radio interface with a maximum data rate of 2 Mbps. It features 768 kB of program memory (Flash) and 64 kB of RAM. Key electrical parameters include a transmit output power of 10 dBm, receive sensitivity of -94.4 dBm, and a supply voltage range of 1.71 V to 3.8 V. Current consumption is specified at 8.8 mA during reception and 33.8 mA during transmission.

Feature Summary

• Integrates an ARM Cortex-M33 processor for secure and efficient application execution
• Supports mesh multiprotocol connectivity including Bluetooth and Zigbee standards
• Provides integrated 2.4 GHz radio transceiver with high sensitivity and output power

Applications

• Smart home lighting and control systems
• Wireless sensor networks and IoT devices
• Home automation hubs and gateways

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's official datasheet to ensure compatibility with design requirements. Confirm that the component meets all relevant regulatory certifications and environmental standards required for the target market. Cross-reference the part number with authorized distributors to validate authenticity and supply chain integrity before finalizing procurement decisions.

Selection Notes

Select this component when a balance of moderate memory capacity and low power consumption is required for mesh networking applications. The 768 kB Flash and 64 kB RAM configuration suits complex firmware implementations without excessive resource overhead. Consider the 10 dBm output power adequate for standard indoor coverage scenarios requiring reliable Bluetooth or Zigbee communication links.

Part Context

This model belongs to the EFR32MG21 series, designed as a cost-effective solution for multi-protocol wireless applications. It shares architectural similarities with other Mighty Gecko variants but differs in memory size and radio power output specifications. The QFN-32 package provides a compact footprint suitable for space-constrained consumer electronics and industrial IoT deployments requiring robust wireless connectivity.

FAQ

What is the maximum clock frequency of the processor?

The ARM Cortex-M33 core operates at a maximum clock frequency of 80 MHz.

Does this chip support both Bluetooth and Zigbee?

Yes, the EFR32MG21B010F768IM32-B supports mesh multiprotocol connectivity, including both Bluetooth and Zigbee standards.