EFR32MG1B132F256GM48-B0R

Overview

The EFR32MG1B132F256GM48-B0R is a Sub-GHz RF System on Chip (SoC) from Silicon Labs, designed for low-power wireless applications. It integrates an ARM Cortex-M33 core with 256 kB of Flash memory and 32 kB of RAM. The device supports operation at 868 MHz, 915 MHz, and 920 MHz frequencies, delivering a maximum output power of +14 dBm. It features a receive sensitivity of -96.9 dBm and a maximum data rate of 2 Mbps. Operating voltage ranges from 1.71 V to 3.8 V, with typical supply currents of 4.2 mA in receive mode and 25 mA during transmission. The component is housed in a QFN-48 package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates an ARM Cortex-M33 processor with substantial non-volatile memory and static random-access memory for efficient code execution and data handling.
• Provides high-performance Sub-GHz radio capabilities with optimized sensitivity and configurable output power for reliable long-range communication.
• Supports multiple regional frequency bands including 868 MHz, 915 MHz, and 920 MHz to ensure global regulatory compliance.

Applications

• Smart metering infrastructure
• Industrial telemetry systems
• Wireless sensor networks

Procurement Notes

Verify the specific suffix 'B0R' against the manufacturer's current datasheet to confirm tape-and-reel packaging specifications. Ensure that the Sub-GHz frequency band requirements align with your target market regulations. Confirm that the QFN-48 thermal pad soldering process meets your assembly standards. Check for any lifecycle status updates, as older silicon generations may face obsolescence risks.

Selection Notes

Select this model when Sub-GHz range is prioritized over 2.4 GHz interoperability. The Cortex-M33 core offers enhanced security features compared to previous M4-based variants. Consider the 14 dBm output power sufficient for your link budget calculations. Evaluate the 1.71 V minimum operating voltage for compatibility with your battery management system.

Part Context

This component belongs to the EFR32FG23 series, which focuses on Sub-GHz connectivity. It differs from the MG1 series by utilizing a newer Cortex-M33 core instead of the M4. The FG23 series generally offers improved performance metrics and lower power consumption profiles suitable for advanced IoT endpoints requiring extended battery life.

Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided documentation. Designers should evaluate newer Silicon Labs Sub-GHz SoCs such as the EFR32FG23 series for updated feature sets and availability.