Data Sheet

ISM4343 Specification
DOC-DS-20074-5.3
Inventek Systems
Page 11
5 BLOCK DIAGRAM
Figure 1 :
ISM4343-WBM-L151 has no antenna
ISM4343-WBM-L54 has Onboard Antenna or U.FL for an External Antenna.
• ADC: Analog to Digital Converter
• I2C: Intelligent Interface Controller
• SPI: Serial Peripheral Interface
• Quad SPI: Quad Serial Peripheral Interface
• USART: Universal Synchronous/Asynchronous Receiver Transmitters
6 HOST INTERFACES
The Inventek Serial to Wi-Fi modules are designed to be used in embedded IoT
applications and to connect sensors directly to the module or SiP and develop a project
on the module using the available microcontroller and memory resources using the
Cypress WICED software development kit. Inventek provides a patch for the Cypress
SDK to setup the basic I/O configuration.
Alternatively, Inventek offers an AT Command set called IWIN that allows
communication to the module over UART or SPI interfaces using simple commands.
The module becomes a black box that handles the TCP/IP stack and all the wireless
communications. The UART and SPI sections below detail how to communicate to the
Inventek serial-to-Wi-Fi modules using the IWIN firmware.