MCU Embedded Wi-Fi a/b/g/n + Bluetooth 5.0 + 802.15.4 Module with Integrated Antenna

WC640 series is Wi2Wi’s first MCU Embedded, Multi-Protocol (Tri-mode), highly integrated plug and play module with Dual Antenna on-board. With embedded microcontroller(s), WC640 module series is a complete wireless sub-system with multiple wireless technologies: Dual Band (2.4/5GHz) Wi-Fi, Bluetooth 5.0 (BLE), 802.15.4 (Zigbee) making it a perfect candidate for a vast variety of applications, including Internet-of-Things (IoT), Industrial IoT (IIoT), M2M, etc. This is low power host-less Internet of Things (IoT) wireless module offering multiple radios, wireless standards, protocols and connectivity framework support. WC640 multi radio embedded wireless module supports advanced seamless coexistence across multiple wireless technologies. Multi-core processing for optimized performance with a Dedicated ARM Cortex-M4F processor for customer applications reducing development cost & efforts, which accelerates their time-to-market and low power ARM Cortex-M0 CPU dedicatedly used for BLE/802.15.4 protocol and Xtensa-based Wi-Fi CPU to offload Wi-Fi stack. WC640 host-less module is a subsystem that includes two antennas, baseband, LNA, PA, crystals, filter, RF front-end and flash for storing Firmware/s, calibration data, MAC addresses. WC640 self-contained wireless sub-system supports interfaces SPI, UART, I2C, PWM, I2S, ADC and GPIOs for external peripherals.

MCU Embedded Wi-Fi a/b/g/n + Bluetooth 5.0 + 802.15.4 Module


  • Dimensions: 30.5 mm x 20.5 mm x 1.86 mm
  • Arm Cortex-M4F up to 128MHz, 32KB- L1 cache controller
  • On-Module serial flash of 4MB
  • 300+KB RAM reserved for applications out of 700+KB
  • WC640 tri-mode integrates Bluetooth 5.0 (BLE), Dual-Band Wi-Fi and 802.15.4 technologies
  • Supports advanced seamless coexistence across multiple wireless protocols (Wi-Fi / Bluetooth / 802.15.4)
  • IEEE 802.11 a/b/g/n Wi-Fi (20/40MHz bandwidth)
  • Supports Station, Access Point, Con-current (simultaneous AP + Station) and Wi-Fi Direct Modes.
  • Supports Open, WPA/WPA2-PSK, WPS & WEP
  • Supports 10 Stations/Clients in AP Mode
  • Supports 16 TCP/UDP sockets
  • Maximum Wi-Fi transmit power up to 18 dBm
  • Wi-Fi Receive Sensitivity -96 dBm
  • Supports single mode Bluetooth version 5 (BLE)
  • Supports MESH protocol
  • Bluetooth Modes: Central, Peripheral
  • 802.15.4 protocols: Zigbee/Thread
  • Ecosystem Support: Amazon AWS, Microsoft Azure, OpenThread
  • Onboard 2 Trace Antennas
  • Operating temperature Industrial grade (-40℃ to +85℃)

Block Diagram
MCU Embedded Wi-Fi a/b/g/n + Bluetooth 5.0 + 802.15.4 Module Block Diagram