Datasheet

Arduino® UNO R4 WiFi

12 / 23 Arduino® UNO R4 WiFi Modiﬁed: 22/06/2023

7 USB Connector

The UNO R4 WiFi has one USB-C® port, used to power and program your board as well as sending & receiving serial

communication.

Note: The board should not be powered with more than 5 V via the USB-C® port.

8 LED Matrix

The UNO R4 WiFi features a 12x8 matrix of red LEDs (U_LEDMATRIX), connected using the technique known as

charlieplexing.

The following pins on the RA4M1 MCU are used for the matrix:

P003

P004

P011

P012

P013

P015

P204

P205

P206

P212

P213

LED matrix schematics.