FSC-BT690 Renesas / Dialog DA14531 Bluetooth Low Energy BLE 5.1 Module


FSC-BT690 is an Ultra Small Size(5.4mm X 5.8mm X 1.2mm) BLE 5.1 Module Ultra Low Power with Bluetooth Low Energy 5.1 standard specifications. It adopts DA14531 chipset, supports UART/I2C/SPI interfaces.

Integrating a 2.4 GHz transceiver and an ARM® Cortex-M0+TM microcontroller with a RAM of 48 kB and a One-Time Programmable (OTP) memory of 32 kB, it can be used as a standalone application processor or as a data pump in hosted systems.

Support communicating with the FeasyBlue app and many other Bluetooth apps

Basic Parameter

Bluetooth Module Model FSC-BT690
Bluetooth version BLE 5.1
Chipset DA14531
Dimension 5.4mm x 5.8mm x 1.2mm
Interface UART, I2C, SPI
Profiles GATT Server/ GATT Client optional
Frequency 2.402-2.480 GHz
Transmit power -19.5 dBm to +2.5 dBm
Power supply 1.1-3.6V
Antenna External antenna required
Highlights Bluetooth 5.1 Specifications, Ultra-small Size, Affordable Cost

Main Features

  • 2.4-GHz RF Transceiver Compatible with Bluetooth Low Energy (BLE) 5.1
  • Ultra-small Size 5.4mm X 5.8mm X 1.2mm
  • Supports Multiple BLE Connections (Up to 3 Connections)
  • Programmable Transmit Output Power from -19.5dBm to +2.5 dBm
  • Operating Voltage: 1.1V to 3.6V
  • Supports SPI, UART, I2C Interfaces


  • Health & Medical Devices
  • Home Automation
  • Wearable Device
  • Other IoT Application
  • Bluetooth Beacons

Firmware Options

Firmware No. Application Profiles Support
FSC-BT690 Data GATT Client
FSC-BT690 Other Customization


Type Title Date
Datasheet Feasycom FSC-BT690 Datasheet April 5, 2022
Programming User Guide FSC-BT6xx Programming User Guide V3.0(BLE) April 5, 2022

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