ISM43340-M4G-L44 Serial-to-WiFi & BLE Combo Module

The  ISM43340-M4G-L44  is an embedded 2.4 & 5 GHz Wi-Fi 802.11 a/b/g/n, Bluetooth Low Energy (BLE) and Bluetooth 4.0 module. The module hardware consist of a Broadcom BCM43340 Combo radio, antenna and a STM32F405 host processor with 1MB of flash and supports SPI or UART host interfaces.

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 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, and BLE connectivity to your platforms.

Key module features:

  • 802.11 b/g/n Broadcom BCM43340 Radio device
  • Bluetooth 4.0 with support for Wi-Fi /BLE  co-existence
  • Fully contained TCP/IP stack thus minimizing host CPU requirements
  • Configurable though AT commands
  • Host interface: UART, SPI up to 25+ MHz
  • Network features ICMP ( Ping), ARP, DHCP,TCP, UDP
  • BLE, Bluetooth 4.0
  • Over the Air updates (OTA)
  • Secure WiFi authentication WEP-128, WPA-PSK (TKIP), WPA2-PSK 

Product Documentation

Technical Resources

Product Resources


Software Scripts Examples

Evaluation Board

The EVB supports all eS-WiFi modules in the L44 and L44+10 (Land Grid Array) footprint -  ISM43362, ISM4390, ISM43340 ,ISM43341.ISM4343 and ISM907


ISMART (Inventek Systems Module Arduino Test) IoT platform ISMART43340-C Arduino Shield

Contact Us: Sales Support (Volume Pricing & Delivery)

Distribution Buy-on-Line:


Wi-Fi and BLE Smart Bridge