FSC-BT802B Qualcomm CSR8670 Bluetooth 5.1 Audio Module


The Feasycom FSC-BT802B is a Bluetooth 5.1 dual-mode audio module. It provides a Bluetooth Low Energy fully compliant system for audio and data communication with Feasycom stack. FSC-BT802B integrates an ultra-low-power DSP and application processor with embedded flash memory, a high-performance stereo codec, a power management subsystem, SPI, LED drivers and ADC 1/0 in a SOC IC. The dual-core architecture with flash memory enables manufacturers to easily differentiate their products with new features without extending development cycles. By default, FSC-BT802B 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 ASCIl commands delivered to the module over serial interface - it's just like a Bluetooth modem. Therefore, FSC-BT802B provides an ideal solution for developers who want to integrate Bluetooth wireless technology into their design.


  • Bluetooth v5.1/5.0/4.0/3.0/2.1/2.0/1.2/1.1
  • 80MHz RISC MCU and 80MIPS Kalimba DSP
  • 16Mb internal flash memory (64-bit wide, 45 ns)
  • Stereo codec with 2 channels of ADC and up to 4 microphone inputs (includes bias generators and digital microphone support)
  • Supports CSR's latest CVC technology for narrow-band and wideband voice connections including wind noise reduction
  • Analog and SPDIF audio interfaces
  • Music Enhancements: SBC, MP3, AAC and AAC+, Faststream codec, aptX, 5-band EQ, 3D stereo separation and so on
  • Supports HSP, HFP, A2DP, AVRCP, PBAP, MAP, SPP, and BLE profiles
  • Multipoint support for HFP connection to 2 handsets for voice
  • Multipoint support for A2DP connection to 2 A2DP source for music playback
  • 3 Hardware LED controllers (for RGB)
  • UART, IC, SPI, PIO, AIO, and USB control interfaces
  • Postage stamp sized form factor
  • Fast charging support up to 200 mA with no external components
  • RoHS compliant


  • Smart watches & Bluetooth bracelets
  • Bluetooth headphones
  • Smart remote controllers
  • Wired or wireless sound bars
  • Wired or wireless speakers
  • Wearable audio with sensors (health and well-being applications)
  • Stereo (AV) Transmitter
  • Automotive Hands-Free Kits


Bluetooth Module FSC-BT802B
Chipset Qualcomm CSR8670
Bluetooth Standard Bluetooth v5.1 (Dual Mode)
Frequency Band 2402MHz~2480MHz
Transmit Power +8 dBm
Receive Sensitivity -90 dBm
Dimension (mm) 12 × 12 × 2.0
Operating Temperature -40℃ to +85℃
Storage Temperature -40℃ to +105℃
Certification BQB, CE, FCC, IC, TELEC, KC


Firmware No. Application Profiles Support
FSC-BT802B Audio Master & Data HFP (Source), A2DP (Source), BLE, SPP, Serial Upgrade
FSC-BT802B Audio & Data HFP (Sink), A2DP (Source & Sink), AVRCP (Sink), BLE, SPP, Serial Upgrade
FSC-BT802B Broadcast Audio A2DP, AVRCP, BLE, Serial Upgrade
FSC-BT802B Other Customization

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