FSC-BW123 Wi-Fi 5 & Bluetooth 5.0 Module with SDIO and HS-UART Interfaces


The Feasycom FSC-BW123 is a Wi-Fi / Bluetooth combo module that supports 1-stream 802.11ac solutions with Multi-user MIMO (Multiple-Input, Multiple-Output) STA mode with integrated Bluetooth Smart Ready controller, SDIO 1.1/2.0/3.0 interface, and HS-UART mixed interface. It combines a WLAN MAC, a 1T1R capable WLAN baseband, and RF in a single chip. It provides a complete solution for a high-performance integrated wireless and Bluetooth device. FSC-BW123 supports fast receiver Automatic Gain Control (AGC) with synchronous and asynchronous control loops among antennas, antenna diversity functions, and adaptive transmit power control functions to obtain better performance in the analog portions of the transceiver. FSC-BW123 Bluetooth controller complies with Bluetooth core specification v5.0, and supports dual mode (BR/EDR + Low Energy Controllers). It is compatible with previous versions, including v2.1 + EDR. For BR/EDR. It supports scatternet topology and allows active links in slave mode, and active links in master mode. For Low Energy, it supports multiple states and allows active links in master mode. The links in BR/EDR and LE can be active simultaneously.


  • CMOS MAC, Baseband PHY and RF in a single chip for lEEE 802.11a/b/g/n/ac compatible WLAN
  • Supports 802.11ac 1x1, Wave-2 compliant with MU-MIMO STA mode
  • Complete 802.11n MIMO solution for 2.4GHz and 5GHz band
  • Complies with SDIO 1.1/2.0/3.0 for WLAN with clock rate up to 100 MHz (SDR50 and DDR50)
  • Supports Wake-On-WLAN via Magic Packet and Wake-up frame
  • Transmit Beam forming
  • Bluetooth 5.0, Supports Simultaneous LE & BR/EDR ,and High Duty Cycle Non-Connectable Advertising
  • HS-UART interface for Bluetooth data transmission compliant with H4 and H5 specification
  • PCM interface for audio data transmission via Bluetooth controller
  • Require external MCU to execute Bluetooth proto col stack
  • Supports all packet types in basic rate and enhanced data rate
  • Fast AGC control to improve receiving dynamic range
  • Integrated internal Class 1, Class 2, and Class 3 PA
  • Supports Enhanced Power Control
  • Supports SCO/eSCO link (allows one link for PCM interface and three links for HS-UART)
  • Supports Secure Simple Pairing
  • Enhanced BT/WLAN coexistence control to improve transmission quality in different profiles
  • Supports multiple Low Energy states
  • Supports Bluetooth Low Energy
  • Integrated 32K oscillator for power management


  • Home and Building Automation
  • Low-Power Video Cameras
  • Thermostats
  • Access Control and Electronic Locks (E-Locks)
  • Asset Tracking and Real Time Location System (RTLS) Tags
  • Cloud Connectivity
  • Internet Gateway
  • Appliances
  • Security Systems
  • Smart Energy
  • Industrial Control
  • Smart Plug and Metering
  • Wireless Audio
  • IP Network Sensor Nodes
  • Medical Devices
  • Car audio and video system


Wi-Fi BT Module FSC-BW123
Wi-Fi Standard IEEE 802.11 a/b/g/n/ac
Wi-Fi Frequency Band 2412~2484MHz / 4900~5925MHz
Wi-Fi Interface SDIO
Bluetooth Standard Dual-mode Bluetooth 5.0
Bluetooth Frequency Band 2402~2480MHz
Bluetooth Transmit Power +7.5 dBm (Max.)
Bluetooth Receive Sensitivity -90 dBm (GFSK, 0.1% BER)
Bluetooth Interface UART/PCM
Size (mm) 17 × 17 × 2.0
Operating Temperature 0°C to 70°C
Storage Temperature -40°C to +85°C
VDD_3V3_WL 3.0~3.6V
VDD_IO 1.62~3.6V

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