Arduino MEGA 2560 Product Reference Manual

Arduino® MEGA 2560 Rev3
8 / 18 Arduino® MEGA 2560 Rev3 Modified: 15/12/2021
3.3 Processor
Primary processor of Arduino Mega 2560 Rev3 board is ATmega2560 chip which operates at a frequency of 16
MHz. It accomodates a large number of input and output lines which gives the provision of interfacing many
external devices. At the same time the operations and processing is not slowed due to its significantly larger RAM
than the other processors. The board also features a USB serial processor ATmega16U2 which acts an interface
between the USB input signals and the main processor. This increases the flexibility of interfacing and connecting
peripherals to the Arduino Mega 2560 Rev 3 board.
3.4 Power Tree
Power Tree

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