WiFi 6 Click

How does it work?

WiFi 6 Click is based on the WF121-A, a self-contained WiFi module providing a fully integrated 2.4GHz 802.11b/g/n radio from Bluegiga. It features the PIC32MX695H, a 32-bit 80MHz microcontroller from Microchip. This microcontroller comes with 128KB of RAM and 512KB of FLASH memory, suitable for developing low-cost and smaller-sized products. For connecting to the local wireless network, the WF121-A uses an onboard chip antenna, although the module features an unpopulated uF.l connector for an external one if the application needs it. In WiFi client mode, the WF121-A radio core automatically powers on the RF circuitry only when required. The WiFi core processor supports automatic Sleep mode when not communicating actively, allowing low idle consumption. When used as an access point, the radio core must receive constantly and cannot enter Sleep mode.

The WiFi 6 Click communicates with the host MCU over the mikroBUS™ socket using one of the available interfaces, the UART, SPI, or I2C interface, with additional functionality provided by the UART CTS pin. To use the SPI serial interface and its maximum 40Mbps data rate, the four IO SEL jumpers must be set from UART to SPI (the UART interface with its 20Mbps is selected by default). The I2C interface with 100KHz and 400KHz speeds does not depend on the position of these jumpers. The integrated firmware of the internal PIC32 provides WiFi and networking stack services TCP/IP, UDP, DHCP, and DNS and can be updated over a populated mikroProg connector.

This Click board™ can only be operated with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Specifications

Pinout diagram

This table shows how the pinout on WiFi 6 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	NC
	NC	2	RST	INT	15	CTS	UART CTS
SPI Chip Select	CS	3	CS	RX	14	TX	UART TX
SPI Clock	SCK	4	SCK	TX	13	RX	UART RX
SPI Data OUT	SDO	5	MISO	SCL	12	SCL	I2C Clock
SPI Data IN	SDI	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	5V	Power Supply
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

WiFi 6 Click electrical specifications