ISM43341-M4G-L44 Serial-to-WiFi, BLE & NFC Module

The  ISM43341-M4G-L44 is an embedded 2.4 & 5 GHz Wi-Fi 802.11 a/b/g/n, Bluetooth Low Energy (BLE), Bluetooth 4.0 & Near Field Communication (NFC) module. The module hardware consist of a Broadcom BCM43341 Quad Combo radio, antenna and a STM32F405 host processor with a standard USB, SPI or UART host interface capability. The Wi-Fi module requires no operating system and has an integrated TCP/IP stack that only requires a simple AT command set to establish connectivity for your wireless product. The module has a very small 14.70mm x 34.22mm surface mount footprint and has full FCC and CE module certification. This product is targeted for low cost embedded wireless applications and enables a quick, easy and cost effective method adding WiFi , Bluetooth, BLE  and NFC connectivity to your platforms. A summary of the key module features:

  • 802.11 b/g/n Compatible based on Broadcom MAC/Baseband/Radio device.
  • Fully contained TCP/IP stack thus minimizing host CPU requirements
  • Configurable though AT commands ( In development).
  • Host interface: USB, UART, SPI up to 25+ MHz
  • Network features ICMP ( Ping), ARP, DHCP,TCP, UDP
  • BLE, Bluetooth and NFC support
  • Over the Air update
  • Secure WiFi authentication WEP-128, WPA-PSK (TKIP), WPA2-PSK 

Product Documentation

Technical Resources

Product Resources


Software Scripts Examples

Evaluation Board

EVB supports all eS-Wi-Fi modules in the L44 and L44+10 (Land Grid Array) footprint -  ISM43362, ISM4390, ISM43340 ,ISM43341



  • PDA, Pocket PC, computing devices
  • Building automation and smart energy control.
  • Industrial sensing and remote equipment monitoring.
  • Medical applications including patient monitoring and remote diagnostics

Contact Us

Distribution Buy-on-Line:




Wi-Fi and BLE Smart Bridge