FSC-BT646Y BLE 5.2 Programmable Module with 8dBm Maximum Output Power


The Feasycom FSC-BT646Y is a Bluetooth Low Energy (BLE) 5.2 module with a 32-bit MCU microcontroller that can be used as an application processor as well as a data pump in fully hosted systems. It supports a wide range of applications from low-end, price sensitive designs to computing-intensive ones and provides advanced high-end features in economical products. Very low active RF, MCU current and low-power mode current consumption provide excellent battery lifetime and allow for operation on small coin cell batteries and in energy-harvesting applications. The BLE 5.2 firmware includes the L2CAP service layer protocols, Security Manager (SM), ATT, GATT and GAP.


  • 2.4GHz RF transceiver compatible with BLE 5.2
  • Low power consumption
  • TX power up to 8 dBm (Class 1)
  • Postage stamp sized form factor
  • Programmable baud-rate generator (baudrate can up to 921600 bps)
  • SRRC, FCC, CE and BQB certified


  • Health Thermometer
  • Heart Rate
  • Blood Pressure
  • Proximity
  • Human Interface Device (HID)


Bluetooth Module FSC-BT646Y
Bluetooth Standard BLE 5.2
Frequency Band 2.4G ISM band (2402~2480 MHz)
Transmit Output Power +8 dBm (Max.)
Receive Sensitivity -99 dBm (Typ.)
Profiles HID, ATT, GATT, GAP
Interfaces UART, GPIO, I2C, SPI, ADC, PWM
Size (mm) 13 × 26.9 × 2.0 (1.5mm pad pitch)
Power Supply 1.5~3.6V
Operating Temperature -40℃ to +110℃
Storage Temperature -40℃ to +125℃

Send Inquiry

Scroll to Top

Send Inquiry