Arduino MEGA 2560 Product Reference Manual

Arduino® MEGA 2560 Rev3
11 / 18 Arduino® MEGA 2560 Rev3 Modified: 15/12/2021
5.1 Analog
Pin Function Type Description
1 NC NC Not Connected
2 IOREF IOREF Reference for digital logic V - connected to 5V
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 /GPIO
10 A1 Analog Analog input 1 /GPIO
11 A2 Analog Analog input 2 /GPIO
12 A3 Analog Analog input 3 /GPIO
13 A4 Analog Analog input 4 /GPIO
14 A5 Analog Analog input 5 /GPIO
15 A6 Analog Analog input 6 /GPIO
16 A7 Analog Analog input 7 /GPIO
17 A8 Analog Analog input 8 /GPIO
18 A9 Analog Analog input 9 /GPIO
19 A10 Analog Analog input 10 /GPIO
20 A11 Analog Analog input 11 /GPIO
21 A12 Analog Analog input 12 /GPIO
22 A13 Analog Analog input 13 /GPIO
23 A14 Analog Analog input 14 /GPIO
24 A15 Analog Analog input 15 /GPIO
5.2 Digital
Pin Function Type Description
1 D21/SCL Digital Input/I2C Digital input 21/I2C Dataline
2 D20/SDA Digital Input/I2C Digital input 20/I2C Dataline
3 AREF Digital Analog Reference Voltage
4 GND Power Ground
5 D13 Digital/GPIO Digital input 13/GPIO
6 D12 Digital/GPIO Digital input 12/GPIO
7 D11 Digital/GPIO Digital input 11/GPIO
8 D10 Digital/GPIO Digital input 10/GPIO
9 D9 Digital/GPIO Digital input 9/GPIO
10 D8 Digital/GPIO Digital input 8/GPIO
11 D7 Digital/GPIO Digital input 7/GPIO
12 D6 Digital/GPIO Digital input 6/GPIO
13 D5 Digital/GPIO Digital input 5/GPIO
14 D4 Digital/GPIO Digital input 4/GPIO

Arduino MEGA 2560 Specifications

General

Microcontroller	ATmega2560
Operating Voltage	5V
Input Voltage (recommended)	7-12V
Input Voltage (limit)	6-20V
Digital I/O Pins	54
PWM Channels	15
Analog Input Pins	16
DC Current per I/O Pin	20 mA
DC Current for 3.3V Pin	50 mA
Flash Memory	256 KB of which 8 KB used by bootloader
SRAM	8 KB
EEPROM	4 KB
Clock Speed	16 MHz
LED_BUILTIN	13
Length	101.52 mm
Width	53.3 mm
Weight	37 g