FSC-BW127 Wi-Fi 6 & Bluetooth 5.2 Module with SDIO/UART/PCM Interfaces


The Feasycom FSC-BW127 is a low-cost and low-power consumption module which has all of the Wi-Fi functionalities. It adopts a highly-integrated IEEE 802.11 a/b/g/n/ac/ax MAC/Baseband/RF WLAN single chip for wireless LAN operation. The module provides simple legacy and 20MHz/40MHz/80MHz co-existence mechanism to ensure backward and network compatibility. The wireless module complies with IEEE 802.11 a/b/g/n/ac/ax 2x2 MIMO standard and the speed can achieve up to 1201 Mbps with dual stream in 802.11ax. The integrated module provides SDIO interface for Wi-Fi and UART/PCM interface for Bluetooth. This combo module is a total solution for a combination of Wi-Fi and Bluetooth V5.2 technologies. The module is specifically developed for all portable devices. Therefore, FSC-BW127 provides an ideal solution for developers who want to integrate Wi-Fi & Bluetooth wireless technology into their design.

Wi-Fi Features

  • Highly integrated WLAN SoC for 802.11 a/b/g/n/ac/ax
  • Supports 802.11 ax 2×2 with OFDMA and MU-MIMO by 4 types PPDU format (such as HE-SU-PPDU, HE-ER-SU-PPDU, HEMU-PPDU, and HE-TB-PPDU)
  • Complete 802.11n MIMO solution for 2.4GHz and 5GHz band
  • Maximum PHY data rate up to 286.8 Mbps using 20MHz bandwidth, 573.5 Mbps using 40MHz bandwidth, and 1201 Mbps using 80MHz bandwidth
  • Complies with SDIO 1.1/2.0/3.0 for WLAN with clock rate up to 208MHz

Bluetooth Features

  • Compliant with Bluetooth 5.2 (dual mode)
  • Supports WLAN/Bluetooth coexistence
  • Compatible with Bluetooth v2.1+EDR
  • Supports Simultaneous LE and BR/EDR
  • HCI, UART, PCM host digital interfaces for audio data
  • Complies with HS-UART with configurable baud rate

PHY Features

  • IEEE 802.11 n/ac/ax MIMO OFDM /OFDMA
  • Two transmit and two receive paths
  • 20/40/80MHz bandwidth transmission
  • Supports 2.4GHz and 5GHz band channels
  • DSSS with DBPSK and DQPSK, CCK modulation with long and short preamble
  • OFDM with BPSK, QPSK, 16QAM, 64QAM and 256QAM and 1024QAM modulation
  • Convolutional Coding Rate: 1/2, 2/3, 3/4, and 5/6
  • Maximum data rate 54Mbps in 802.11g, 300Mbps in 802.11n and 866.7Mbps in 802.11ac, 1201Mbps in 802.11ax
  • OFDM/DSSS/CCK receive diversity with MRC using up to 2 receive paths
  • Supports STBC
  • Supports LDPC
  • Maximum-Likelihood Detection (MLD)
  • Fast receiver Automatic Gain Control (AGC)


  • Car audio and video systems
  • Measurement systems
  • Portable Navigation Device (PND)


Wi-Fi BT Module FSC-BW127
Wi-Fi Standard 2.4G (IEEE 802.11 b/g/n/ac/ax), 5G (IEEE 802.11 a/n/ac/ax)
Wi-Fi Frequency Band 2.4G ISM band (2400~2497 MHz), 5G ISM band (5150~5850 MHz)
Wi-Fi Interface SDIO
Bluetooth Standard Bluetooth 5.2 (Dual Mode)
Bluetooth Frequency Band 2.4G (2402~2480 MHz)
Bluetooth Transmit Power +8 dBm (Max.)
Bluetooth Receive Sensitivity -92 dBm (Min.)
Bluetooth Interface UART, PCM
Size (mm) 13 × 15 × 2.2 (Height including shielding case) or 13 × 15 × 1.8 (Height excluding shielding case)
Operating Temperature 0°C to 70°C
Storage Temperature -40°C to +85°C
Operating Voltage (VBAT) 3.0~3.6V (1.5A peak current)
VDD_IO 1.7~3.6V (200mA peak current)
Miscellaneous Lead Free and RoHS compliant, one year warranty
Humidity 10% ~ 90% non-condensing
MSL Grade MSL 3
ESD Grade Human body model (pass ±2000 V, all pins), charge device model (pass ±250 V, all pins)

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