Arduino UNO R4 WiFi

Arduino® UNO R4 WiFi
18 / 23 Arduino® UNO R4 WiFi Modified: 26/06/2023
12.1 Analog
Pin Function Type Description
1 BOOT NC Not Connected
2 IOREF IOREF Reference for digital logic V - connected to 5 V
3 Reset Reset Reset
4 +3V3 Power +3V3 Power Rail
5 +5V Power +5V Power Rail
6 GND Power Ground
7 GND Power Ground
8 VIN Power Voltage Input
9 A0 Analog Analog input 0 / DAC
10 A1 Analog Analog input 1 / OPAMP+
11 A2 Analog Analog input 2 / OPAMP-
12 A3 Analog Analog input 3 / OPAMPOut
13 A4 Analog Analog input 4 / I2C Serial Datal (SDA)
14 A5 Analog Analog input 5 / I2C Serial Clock (SCL)
12.2 Digital
Pin Function Type Description
1 SCL Digital I2C Serial Clock (SCL)
2 SDA Digital I2C Serial Datal (SDA)
3 AREF Digital Analog Reference Voltage
4 GND Power Ground
5 D13/SCK/CANRX0 Digital GPIO 13 / SPI Clock / CAN Receiver (RX)
6 D12/CIPO Digital GPIO 12 / SPI Controller In Peripheral Out
7 D11/COPI Digital GPIO 11 (PWM) / SPI Controller Out Peripheral In
8 D10/CS/CANTX0 Digital GPIO 10 (PWM) / SPI Chip Select / CAN Transmitter (TX)
9 D9 Digital GPIO 9 (PWM~)
10 D8 Digital GPIO 8
11 D7 Digital GPIO 7
12 D6 Digital GPIO 6 (PWM~)
13 D5 Digital GPIO 5 (PWM~)
14 D4 Digital GPIO 4
15 D3 Digital GPIO 3 (PWM~)
16 D2 Digital GPIO 2
17 D1/TX0 Digital GPIO 1 / Serial 0 Transmitter (TX)
18 D0/TX0 Digital GPIO 0 / Serial 0 Receiver (RX)