EFR32MG1B132F256GM48-B0

Overview

The EFR32MG1B132F256GM48-B0 is a Sub-GHz RF System on Chip (SoC) from Silicon Labs' Mighty Gecko family. It integrates an ARM Cortex-M4 core operating at 40 MHz with 256 kB of Flash memory and 32 kB of RAM. The device supports frequencies including 902-928 MHz, delivering up to +16.5 dBm output power and -97 dBm sensitivity. It operates within a voltage range of 1.7 V to 3.8 V, consuming 8.2 mA during transmission and 8.7 mA during reception. The component is housed in a QFN-48 package.

Feature Summary

• Integrates a 40 MHz ARM Cortex-M4 microcontroller with substantial onboard memory for complex application logic.
• Features a high-performance Sub-GHz radio transceiver optimized for long-range wireless communication.
• Supports mesh networking capabilities suitable for robust IoT infrastructure deployment.

Applications

• Smart metering and utility automation systems
• Industrial sensor networks and monitoring
• Home security and alarm system components

Procurement Notes

Verify the specific suffix designation against official Silicon Labs documentation to confirm exact frequency band and regulatory certification status. Confirm lifecycle status as Not Recommended for New Designs (NRND) prior to integration into new product lines. Ensure supply chain sources provide valid traceability and authenticity guarantees given the component's mature status.

Selection Notes

Select this component when a balance of moderate processing power and long-range Sub-GHz connectivity is required. It serves as a suitable alternative for designs needing reliable mesh networking without the complexity of higher-frequency protocols. Evaluate thermal performance and antenna matching requirements specific to the intended Sub-GHz operational bands.

Part Context

This part belongs to the EFR32MG1B series, representing the Mighty Gecko line focused on Sub-GHz applications. It shares architectural similarities with other MG1 variants but is distinct in its frequency coverage and power amplifier specifications compared to 2.4 GHz counterparts like the MG1V series.

Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided source material. Consider consulting Silicon Labs for current recommended replacements or migration paths due to the NRND status.