WiFi 9 Click is fully embedded stand-alone Wi-Fi module, equipped with the PAN9420 a 2.4 GHz ISM band Wi-Fi-embedded module which includes a wireless radio and an MCU for easy integration of Wi-Fi connectivity into various electronic devices. This module combines a high-performance CPU with Wireless radio and integrated memory, which offers many features like webpage storing of HTML or image data, possibility to work in access point or infrastructure mode, and dual UART interface for communication with the host controllers.

WiFi 9 Click is supported by a mikroSDK compliant library, which includes functions that simplify software development.

This board is featuring PAN9420 a 2.4 GHz 802.11 b/g/n embedded Wi-Fi module with integrated stack and API that minimizes firmware development and includes a full security suite. The module is specifically designed for highly integrated and cost-effective applications. The module includes a fully shielded case, integrated crystal oscillators, and a chip antenna.

The WiFi 9 Click comes equipped with the PAN9420, a full embedded Wi-FI module from Panasonic. The module combines a high-performance CPU, high-sensitivity wireless radio, baseband processor, medium access controller, encryption unit, boot ROM with patching capability, internal SRAM, and in-system programmable flash memory. The module’s integrated QSPI flash memory is available to the application for storing web content such as HTML pages or image data.

Parallel support of access point and infrastructure mode allows easy setup of simultaneous Wi‑Fi connections from the module to smart devices and home network routers. The pre‑programmed Wi-Fi SoC firmware enables client (STA), micro access point (µAP), and Ad‑hoc mode (Wi-Fi Direct) applications. With the transparent mode, raw data can be sent from the UART to the air interface to smart devices, web servers, or PC applications.

For working with PAN9420 module at your disposal are two data UART interfaces, one for command and another for transparent data. In order to enable simultaneous communication between the module and host MCU through one UART on mikroBUS™ socket we have added 74HC4052 multiplexer from Nexperia USA Inc.

On the WiFi 9 Click board™ several status LED’s are implemented for easiest visual monitoring of the module states like MCU heartbeat, IP connectivity, Errors, WiFi connection and Booting.

The PAN9420 supports Over-the-Air firmware updates. In order to make use of this feature, the customer needs to ensure that the appropriate preconditions are fulfilled and that a suitable environment is provided, particularly with regard to:

• Module configuration
• Utilization of the related module interface commands
• Server infrastructure and application

The PAN9420 module is operated at 3.3V. Having in mind its absolute maximum ratings, it is not advisable to use the Click board™ with MCUs that use logic voltage levels up to 5V.

• Interface: GPIO, UART
• Compatibility: mikroBUS™
• Dimensions: 57.15 x 25.4mm
• Input Voltage: 3.3V

• Schematic
• 74HC4052 Datasheet
• PAN9420 Datasheet
• mikroSDK
• LibStock