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
  • Industrial Sensor controller
  • Medical monitoring equipment
  • Vehicle rear view camera
  • Warehousing and logistics handhelds
  • Smart homes / home automation
  • Smart energy
  • Data logger
  • IoT Hub
  • Smart Cities
  • Home Entertainment


Wi-Fi IEEE 802.11: a/b/g/n, Dual-Band (2.4 & 5 GHz)
Channel Bandwidth: 20 & 40 MHz
Max Wi-Fi Tx Power: 18 dBm
Receive Sensitivity: -96 dBm
Bluetooth version: Bluetooth 5.0 (BLE)
Max BT Tx Power: 4 dBm
Bluetooth Rx Sensitivity: -97 dBm
802.15.4: Zigbee & Thread
802.15.4 Tx Power: 4 dBm
802.15.4 Rx Sensitivity: -105 dBm

Software & Documentation

Particulars File Last Updated
Product Brief WC640_Product_Brief.pdf 03/31/2020
Data Sheet WC640_Datasheet.pdf 03/31/2020
Development Kit Flyer WC640-DVK5_Flyer.pdf 03/31/2020
Software User Guide WC640_Software_UserGuide.pdf 03/31/2020
Hardware Integration Guide WC640-Hardware-Integration-Guide.pdf 03/31/2020


Part Order Number Description Antenna Operating Temperature Packaging Type Buy from Distributor
WC640A00-I5QT MCU Embedded Wi-Fi 802.11 a/b/g/n Module Trace (-40°C to +85°C) Tray Buy Now
WC640AD7-I5QT MCU + Wi-Fi 802.11 a/b/g/n + Bluetooth 5.0 + 802.15.4 Module Tarce (-40°C to +85°C) Tray Buy Now
WC640-DVK5 WC640AD7 Module on Evaluation Board and an USB cable Trace (-40°C to +85°C) Kit Buy Now