EFR32MG24A420F1536IM40-B

Overview

The EFR32MG24A420F1536IM40-B is a Silicon Labs RF System-on-Chip featuring an ARM Cortex-M33 core operating at 78 MHz. It integrates 1536 kB of Flash and 256 kB of RAM within a QFN-40 package. The device supports 2.4 GHz wireless communication with a maximum output power of 20 dBm and a sensitivity of -94.4 dBm. It operates on a single supply voltage ranging from 1.71 V to 3.8 V, with a maximum data rate of 2 Mbps. The component functions across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-performance 32-bit ARM Cortex-M33 processor with DSP instructions and a floating-point unit for efficient signal processing.
• Supports multiple wireless protocols including Bluetooth Low Energy, Zigbee, Thread, Matter, and proprietary 2.4 GHz standards.
• Includes Secure Vault hardware for enhanced security and privacy protection in IoT applications.
• Features a matrix-vector processor designed to accelerate AI and machine learning workloads.

Applications

• Smart home devices and lighting systems
• Medical equipment requiring secure wireless connectivity
• IoT sensors utilizing Thread or Zigbee mesh networks
• Bluetooth mesh networking nodes

Procurement Notes

Verify the specific suffix 'B' indicates the correct package variant and temperature rating during procurement. Confirm that the QFN-40 footprint matches the design layout. Ensure compliance with RoHS and REACH requirements by checking the manufacturer's latest documentation. Validate moisture sensitivity levels for proper handling and storage procedures before assembly.

Selection Notes

Select this model when high memory capacity (1536 kB Flash) is required for complex protocol stacks. Choose the QFN-40 package for compact board space compared to larger variants. Consider the 20 dBm output power for extended range needs. Verify compatibility with existing 40 MHz crystal oscillators and interface requirements such as I2C.

Part Context

This component belongs to the EFR32MG24 series, part of Silicon Labs' second-generation wireless SoC family. It is designed for sub-GHz and 2.4 GHz applications, offering a balance of performance and power efficiency. The MG24 designation indicates support for both Bluetooth and Zigbee/Thread protocols, distinguishing it from BG24 models which focus primarily on Bluetooth.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Silicon Labs cross-reference tools for compatible alternatives.