4
2013-04-03
althaus
The Arduino Mega 2560 is a microcontroller board based on the ATmega2560 (datasheet). 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 Duemilanove or Diecimila.
The Mega 2560 is an update to the Arduino Mega, which it replaces.
The Mega2560 differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the ATmega16U2 programmed as a USB-to-serial converter.
Revision 3 of the board has the following new features:
1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible both with the board that use the AVR, which operate with 5V and with the Arduino Due that operate with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
Stronger RESET circuit.
Atmega 16U2 replace the 8U2.
Arduino Mega 2560 (Rev3)
http://arduino.cc/en/Main/ArduinoBoardMega2560
Arduino Mega 2560
ATmega2560
microcontrollerboard
REV 3
//obsolete//microcontroller board (arduino)
Arduino MEGA 2560 (Rev3)
A8
A9
A10
A11
A12
A13
A14
A15
A0
A1
A2
A3
A4
A5
A6
A7
D21/SCL
D20/SDA
D19/RX1
D18/TX1
D17 PWM/RX2
D16 PWM/TX2
D15/RX3
D14/TX3
SCL
SDA
AREF
GND
D13 PWM
D12 PWM
D11 PWM
D10 PWM
D9 PWM
D8 PWM
IOREF
IOREF
RESET
3V3
5V
GND
GND
VIN
D0 RX0
D1 TX0
D2 PWM
D3 PWM
D4 PWM
D5 PWM
D6 PWM
D7 PWM
5V
5V
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
D32
D33
D34
D35
D36
D37
D38
D39
D40
D41
D42
D43
D44
D45
D46
D47
D48
D49
D50
D51
D52
D53
GND
GND