ISM4343-WBM-L151 Serial-to-WiFi Evaluation Board


The ISM4343-WBM-L151 is an embedded 2.4 GHz  Wi-Fi  and Bluetooth combo module. The module hardware consists of the Cypress CYW4343 radio and ST Micro STM32F412 Cortex MCU.

The Wi-Fi module requires no operating system and has an integrated TCP/IP stack that only requires a simple AT command or the Cypress WICED SDK set to establish connectivity for your wireless product.

The module has a very small 10 mm x 10 mm surface mount footprint and will have FCC and CE module certification (In process). This product is targeted for low cost embedded wireless applications and enables a quick, easy and cost effective method adding Wi-Fi connectivity to your platforms. A summary of the key module features:

WLAN, Bluetooth & MCU functions:

  • Single-band 2.4 GHz b/g/n, 802.11b, 802.11g, 802.11n (single stream)
  • STM32 ARM 32-bit CortexTM-M4 with a frequency up to 100 MHz.
  • 1 Mbyte of MCU internal Flash
  • 256KB of SRAM
      • SPI, Quad SPI (support Dual mode), USART, PCM
      • ADC, I2C, I2S, GPIO, Timers
      • JTAG
  • Bluetooth v4.1 with integrated Class 1 PA
  • Bluetooth 2.1+EDR, Buletooth 3.0, Bluetooth 4.1 (Bluetooth Low Energy)
  • Bluetooth v4.2 LE Secure Connection via the Cypress BSA stack.


The ISM4343-EVB is an embedded wireless evaluation board that is used to evaluate the  802.11 b/g/n eS-Wifi module.  The evaluation board consist of a Wi-Fi module with host processor, supported by Cypress’s WICED SDK.

  • 802.11 b/g/n Compatible based on Broadcom MAC/Baseband/Radio device.
  • Fully contained TCP/IP stack thus minimizing host CPU requirements
  • Network features ICMP ( Ping), ARP, DHCP,TCP, UDP
  • Secure WiFi authentication WEP-128, WPA-PSK (TKIP), WPA2-PSK


Additional information

Weight 2 lbs

-E on board antenna, -U connector for external connector


UART – C., SPI -C., Custom Firmware