1. Devices
  2. EFR32BG1B Series
  3. EFR32BG1B232
  4. EFR32BG1B232F256GJ43


Silicon Labs

- 32-bit ARM Cortex-M4 core with 40 MHz maximum operating frequency
- Scalable Memory and Radio configuration options available in several footprint compatible QFN packages
- 12-channel Peripheral Reflex System enabling autonomous interaction of MCU peripherals
- Autonomous Hardware Crypto Accelerator and Random Number Generator
- Integrated 2.4 GHz balun and PA with up to 19.5 dBm transmit power
- Integrated DC-DC with RF noise mitigation

The Wireless Gecko portfolio of SoCs (EFR32) include Mighty Gecko (EFR32MG1), Blue Gecko (EFR32BG1), and Flex Gecko (EFR32FG1) families. With support for Bluetooth Smart (BLE), ZigBee, Thread and proprietary protocols, the Wireless Gecko portfolio is ideal for enabling energy-friendly wireless networking for IoT devices. The single-die solution provides industry-leading energy efficiency, ultra-fast wakeup times, a scalable high-power amplifier, an integrated balun and no-compromise MCU features.




Maximum Clock Frequency 38 MHz
Memory Protection Unit MPU
Floating Point Unit SP_FPU
Trust Zone NO_TZ
Digital Signal Processor NO_DSP
CortexM Vector Extensions
Endian Little-endian