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ATMega2560 Microcontroller

The ATMega2560 from Atmel is an 8-bit low-power microcontroller that is found in the popular Arduino Mega development board. It is based on the 8-bit AVR RISC architecture and has 256KB flash memory, 8KB SRAM, and 4KB EEPROM. It also has a wide variety of peripherals, including timers, counters, PWM generators, a comparator, and ADCs. It can be clocked up to 16MHz with a 5V supply.

 

ATMega2560 Pinout Configuration

Pin Number

Pin Name

Description

10, 31, 61, 80

VCC

IC Supply pins

11, 32, 62, 81, 99

GND

IC ground reference pins

98

AREF

Reference supply for ADC

100

AVCC

Supply pin for analog peripherals

33, 34

XTAL

Crystal oscillator pins

30

ATmega2560 RESET Pin

Reset pin, active low

2 - 9

PE0 – PE7

GPIO Port E pins

12 – 18, 27

PH0 – PH6, PH7

GPIO Port H pins

19 - 26

PB0 – PB7

GPIO Port B pins

28 – 29, 51 – 52, 70

PG3 – PG4, PG0 – PG1, PG2

GPIO Port G pins

35 - 42

PL0 – PL7

GPIO Port L pins

43 - 50

PD0 – PD7

GPIO Port D pins

53 - 60

PC0 – PC7

GPIO Port C pins

63 – 69, 79

PJ0 – PJ6, PJ7

GPIO Port J pins

71 - 78

PA7 – PA0

GPIO Port A pins

82 - 89

PK7 – PK0

GPIO Port K pins

90 - 97

PF7 – PF0

GPIO Port F pins

 

Features and Specifications

  • 86 programmable IO lines
  • Two 8-bit timer/counters, four 16-bit timer/counters
  • 16-channel 10-bit ADC
  • Four USART
  • SPI serial interface
  • On-chip analog comparator

 

Note: Complete technical details can be found in the ATMega2560 datasheet given at the end of this page.

 

ATMega2560 Equivalents

ATMega640, ATMega1280

 

Other Microcontrollers

ATMega328P

 

How To Use ATMega2560?

The ATMega2560 is an 8-bit AVR microcontroller that comes with 86 programmable GPIO pins, PWM, ADC, and timer peripherals. It can be programmed using Atmel Studio and a dedicated programmer, or using another ATMega microcontroller and using the Arduino development environment. The easiest to use is the Arduino Mega board, which contains the ATMega3560, and can be programmed over USB from the Arduino software. The GPIO pins are also mapped internally to the peripherals like SPI, USART, and SPI. The ATMega2560 uses 5V logic levels, so it might not be compatible with 3.3V sensors and other peripherals. This is not a major limitation, it can be overcome using level shifting circuits. Thanks to its large number of GPIO pins, the ATMega2560 overcomes the limitations of smaller microcontrollers like the ATMega328P and allows it to communicate with more sensors and peripherals, while also leaving a large number of GPIO pins available for other tasks.

 

Applications 

  • Embedded electronics control
  • Robotics, HID
  • Mixed-signal electronics

 

2D Model and Dimensions

If you are designing a PCB or Perf board with this component then the following picture from the Datasheet will be useful to know its package type and dimensions.

ATMega2560 Microcontroller Dimensions

Component Datasheet

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