Arduino MEGA 2560 Product Reference Manual

Arduino® MEGA 2560 Rev3
12 / 18 Arduino® MEGA 2560 Rev3 Modified: 15/12/2021
Pin Function Type Description
15 D3 Digital/GPIO Digital input 3/GPIO
16 D2 Digital/GPIO Digital input 2/GPIO
17 D1/TX0 Digital/GPIO Digital input 1 /GPIO
18 D0/Tx1 Digital/GPIO Digital input 0 /GPIO
19 D14 Digital/GPIO Digital input 14 /GPIO
20 D15 Digital/GPIO Digital input 15 /GPIO
21 D16 Digital/GPIO Digital input 16 /GPIO
22 D17 Digital/GPIO Digital input 17 /GPIO
23 D18 Digital/GPIO Digital input 18 /GPIO
24 D19 Digital/GPIO Digital input 19 /GPIO
25 D20 Digital/GPIO Digital input 20 /GPIO
26 D21 Digital/GPIO Digital input 21 /GPIO
Arduino Mega Pinout

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