Janalog; Jdigital - Arduino UNO R3 Product Reference Manual

5.1 JANALOG

Pin Function
1 NC
2 IOREF
3 Reset
4 +3V3
5 +5V
6 GND
7 GND
8 VIN
9 A0
10 A1
11 A2
12 A3
13 A4/SDA
14 A5/SCL

5.2 JDIGITAL

Pin Function
1 D0
2 D1
3 D2
4 D3
5 D4
6 D5
7 D6
8 D7
9 D8
10 D9
11 SS
12 MOSI
13 MISO
14 SCK
15 GND
16 AREF
17 A4/SD4
18 A5/SD5
9 / 13
Type
NC
IOREF
Reset
Power
Power
Power
Power
Power
Analog/GPIO
Analog/GPIO
Analog/GPIO
Analog/GPIO
Analog input/I2C
Analog input/I2C
Type
Digital/GPIO
Digital/GPIO
Digital/GPIO
Digital/GPIO
Digital/GPIO
Digital/GPIO
Digital/GPIO
Digital/GPIO
Digital/GPIO
Digital/GPIO
Digital
Digital
Digital
Digital
Power
Digital
Digital
Digital
Arduino® UNO R3 / Rev. 01 - 25/11/2021
Description
Not connected
Reference for digital logic V - connected to 5V
Reset
+3V3 Power Rail
+5V Power Rail
Ground
Ground
Voltage Input
Analog input 0 /GPIO
Analog input 1 /GPIO
Analog input 2 /GPIO
Analog input 3 /GPIO
Analog input 4/I2C Data line
Analog input 5/I2C Clock line
Description
Digital pin 0/GPIO
Digital pin 1/GPIO
Digital pin 2/GPIO
Digital pin 3/GPIO
Digital pin 4/GPIO
Digital pin 5/GPIO
Digital pin 6/GPIO
Digital pin 7/GPIO
Digital pin 8/GPIO
Digital pin 9/GPIO
SPI Chip Select
SPI1 Main Out Secondary In
SPI Main In Secondary Out
SPI serial clock output
Ground
Analog reference voltage
Analog input 4/I2C Data line (duplicated)
Analog input 5/I2C Clock line (duplicated)
Arduino® UNO R3