FSC-BT677B Silicon Labs EFR32BG22 SoC BLE 5.2 Module for Motorcycle/Electric Vehicle Dashboard

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FSC-BT677B is a Silicon Labs EFR32BG22 Bluetooth 5.2 Module. The BT677B software and SDK support for Bluetooth Low Energy (BLE), Bluetooth 5.2 and Bluetooth mesh networks. The module also support for proprietary wireless protocol development. FSC-BT677B combines an energy-friendly MCU with a highly integrated radio transceiver. The module is suited for any battery operated application other systems requiring high performance and low energy consumption.It supports Wirepas Mesh protocal

Basic Parameters

Bluetooth Model FSC-BT677B
Bluetooth Version Bluetooth 5.2 (BLE) module
BT5.2 Specification Support: 2M PHY, LE Long Range, Advertising Extensions
Frequency 2.4 - 2.4835 GHz
Transmit Power 0 dBm (Maximum)
Receive Sensitivity -98 dBm (Typical)
Modulation GFSK
Dimension 16.5mm X 13mm X 2.3mm; Pad Pitch 1.27mm


  • 2.4-GHz RF Transceiver Compatible With Bluetooth low energy (BLE) 5.2 standard
  • Integrate MCU to execute Bluetooth protocol stack.
  • Postage stamp sized form,
  • Low power
  • Class 2 support(up to 0 dBm)
  • The default UART Baud rate is 115.2Kbps and can support from 1200bps up to 921.6Kbps.
  • UART, 12-bit ADC@ 1 Msps,16-bit @ 76.9 ksps data connection interfaces.
  • Support the OTA upgrade.
  • Bluetooth stack profiles support: LE HID, and all BLE protocols.
  • PWM
  • An external 32.768 kHz crystal oscillator provides accurate timing reference for low energy modes


  • IoT Sensors and End Devices
  • Health & Medical Devices
  • Home Automation
  • Accessories Devices
  • Human Interface Devices
  • Metering Devices
  • Commercial and Retail Lighting and Sensing

Silicon Labs EFR32BG22 Bluetooth 5.2 Module's Block Diagram and PIN Diagram

bluetooth module PIN diagram
bluetooth module Block diagram

bluetooth module PIN diagram
bluetooth module PIN diagram


Type Title Date
Datasheet Feasycom FSC-BT677B Datasheet 23,03,2023

Dimensions 16.5 × 13 × 2.3 mm

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