Arduino Mega 2560 Microcontroller

ArduinoSKU: RB-Ard-19
Manufacturer #: A000047

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Description

  • Replaced with Arduino Mega 2560 Microcontroller Rev3
  • User friendly USB programmable Arduino Microcontroller
  • Open Source design based on the larger ATmega2560
  • 54 digital I/O Pins and 16 analog I/O Pins
  • 256 KB of Flash Memory, 8 KB of SRAM, and 4kB of EEPROM
  • Clock Speed: 16 MHz

The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega is compatible with most shields designed for the Arduino Uno, Duemilanove, or Diecimila.

The Arduino Mega can be powered via the USB Connection or with an external power supply. The Mega2560 differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega8U2 programmed as a USB-to-serial converter.

Each of the 54 digital pins on the Mega can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. It also has 16 analog inputs, each of which provide 10 bits of resolution (i.e. 1024 different values).

The Arduino Mega2560 has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega2560 provides four hardware UARTs for TTL (5V) serial communication. An ATmega8U2 on the board channels one of these over USB and provides a virtual com port to software on the computer. Furthermore, it supports I2C (TWI) and SPI communication. The Arduino software includes a Wire library to simplify use of the I2C bus; see the documentation on the Wiring website for details. For SPI communication, use the SPI library.

The Arduino Mega2560 can be programmed with the free and open source Arduino IDE hrough a USB connection without needing any extra hardware thanks to its preburnt bootloader.  You can also bypass the bootloader and program the microcontroller through the ICSP header.

The Arduino Mega2560 is designed to be compatible with most shields designed for the Uno, Diecimila or Duemilanove.

  • 4 inches by 2.1 inches with the USB connector and power jack extending beyond the former dimension.
Making Robots With The Arduino, Part 1, by Gordon McComb, Servo Magazine November 2010
  • Microcontroller: ATmega2560
  • Operating Voltage: 5V
  • Input Voltage (recommended): 7-12V
  • Input Voltage (limits): 6-20V
  • Digital I/O Pins: 54 (of which 14 provide PWM output)
  • Analog Input Pins: 16
  • DC Current per I/O Pin: 40 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

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