EFR32BG12P433F1024GM48-CR

RF Transceiver ICS Overview

The EFR32BG12P433F1024GM48-CR is a Blue Gecko RF System-on-Chip (SoC) manufactured by Silicon Labs, designed for Bluetooth Low Energy (BLE) and proprietary applications. It integrates an ARM Cortex-M4 core operating at up to 40 MHz with 1 MB of program memory and 256 kB of RAM. The device supports dual-band operation across sub-GHz frequencies (169, 315, 433, 490, 868, 915 MHz) and 2.4 GHz, delivering a maximum output power of 19 dBm and a sensitivity of -91.3 dBm. It features a 12-bit ADC, 31 GPIOs, and serial interfaces including I2C, SPI, and UART. Operating within a voltage range of 1.8 V to 3.8 V, it functions between -40°C and +85°C in a 48-pin QFN package.

RF Transceiver ICS Feature Summary

• Integrates an ARM Cortex-M4 processor with substantial non-volatile memory and static random-access memory for complex application execution.
• Supports multi-protocol wireless communication including Bluetooth Low Energy v5.0 and proprietary standards across multiple frequency bands.
• Provides high transmit power and receiver sensitivity for reliable long-range connectivity in IoT deployments.
• Includes versatile peripheral interfaces such as I2C, SPI, and UART alongside a 12-bit analog-to-digital converter.

RF Transceiver ICS Applications

• Smart home devices requiring BLE connectivity
• Industrial sensor nodes utilizing sub-GHz or 2.4 GHz links
• Asset tracking systems leveraging multi-protocol support
• Wearable electronics needing low-power MCU integration

RF Transceiver ICS Procurement Notes

Verify the specific suffix 'CR' indicates reel packaging when sourcing components. Confirm that the sub-GHz frequency variants are required, as this model supports multiple bands beyond standard 2.4 GHz. Ensure the 48-QFN package dimensions align with the target PCB footprint. Check for any recent production change notices regarding assembly or labeling updates from the manufacturer.

RF Transceiver ICS Selection Notes

Select this component when both BLE capabilities and sub-GHz flexibility are necessary within a single chip. The 1 MB flash size accommodates larger firmware images compared to lower-tier models. Consider the 40 MHz clock speed for processing-intensive tasks. Evaluate the 19 dBm output against link budget requirements. Compare against the Mighty Gecko series if mesh networking protocols like Zigbee are also required.

RF Transceiver ICS Part Context

This part belongs to the Blue Gecko family, optimized primarily for Bluetooth Low Energy applications. It shares the same physical package and core architecture as other EFR32xG12 variants but differs in supported wireless protocols. Unlike the Flex Gecko, which focuses on sub-GHz, or the Mighty Gecko, which emphasizes mesh networking, this model targets BLE-centric designs with optional proprietary mode support.

RF Transceiver ICS Replacement Considerations

EFR32BG12P433F1024GM48-C is the tray-packaged equivalent of this reel-delivered component. For higher temperature ratings, consider the EFR32MG12P433F1024IM48-CR variant which supports up to +125°C. If only 2.4 GHz is needed, the EFR32BG12P432F1024GM48-C offers a similar feature set without sub-GHz hardware.