FSC-BT977B BLE 5.1 SIG Mesh MCU Module with 10dBm Maximum Output Power


The Feasycom FSC-BT977B is a Bluetooth 5.1 Low Energy module that supports very low active RF and MCU current and low-power mode current consumption, providing excellent battery lifetime and allow for operation on small coin cell batteries and in energy-harvesting applications. FSC-BT977B contains a 32-bit MCU core Up to 64MHz clock speed up to 64KB system SRAM up to 512KB flash storage supports dual wire debugging protocol It is sutable for a variety of RF spefication systems. FSC-BT977B module is equipped with powerful and easy-to-use Feasycom firmware. It's easy to use and completely encapsulated. Feasycom firmware enables users to access Bluetooth functionality with simple ASClI commands delivered to the module over serial interface, just like a Bluetooth modem. Therefore, FSC-BT977B provides an ideal solution for developers who want to integrate Bluetooth wireless technology into their design.


  • Compatible with Bluetooth Low Energy 5.1 and Bluetooth mesh specifications
  • Integrate MCU to execute Bluetooth protocol stack
  • Postage stamp sized form
  • Low power consumption
  • Class 1.5 support (up to +10 dBm)
  • The default UART Baud rate is 115.2 Kbps and can support from 1200 bps up to 230.4 Kbps
  • 12-bit high-precision SAR ADC interface
  • Supports the OTA upgrade
  • Bluetooth stack profiles support LE HID and all BLE protocols
  • PWM


  • Lighting
  • Connected Home
  • Gateways and Digital Assistants
  • Building Automation and Security


Bluetooth Module FSC-BT977B
Bluetooth Standard BLE 5.1
Frequency Band 2.4~2.4835GHz
Transmit Output Power +10 dBm (Max.)
Receive Sensitivity -99.5 dBm @ 1 Mbps, -96.8 dBm @ 2 Mbps, -104.8 dBm @ 125 Kbps, -98.5 dBm (Typ.) @ 1Mbps BLE
Profiles GATT, MFi
Interfaces UART, GPIO, I2C, SPI, ADC
Size (mm) 13.1 × 18.6 × 2.2 (1.3mm pad pitch)
Power Supply 2.2~3.6V
Operating Temperature -40℃ to +85℃
Storage Temperature -40℃ to +125℃

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