Arduino Mega ADK User Manual

The MAX3421E comunicate with Arduino with the SPI bus. So it uses the following pins:
 Digital: 7 (RST), 50 (MISO), 51 (MOSI), 52 (SCK).
NB: Please do not use Digital pin 7 as input or output because is used in the communication
with MAX3421E
 Non broken out on headers: PJ3 (GP_MAX), PJ6 (INT_MAX), PH7 (SS).
 LED: 13.There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the
LED is on, when the pin is LOW, it's off.
 TWI: 20 (SDA) and 21 (SCL). Support TWI communication using the Wire library. Note that
these pins are not in the same location as the TWI pins on the Duemilanove or Diecimila.
The MEGA ADK has 16 analog inputs, each of which provide 10 bits of resolution (i.e. 1024
different values). By default they measure from ground to 5 volts, though is it possible to
change the upper end of their range using the AREF pin and analog Reference () function.
There are a couple of other pins on the board:
 AREF. Reference voltage for the analog inputs. Used with analog Reference ().
 Reset. Bring this line LOW to reset the microcontroller. Typically used to add a reset button
to shields which block the one on the board.
Communication
The Arduino MEGA ADK 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
(Windows machines will need a .inf file, but OSX and Linux machines will recognize the board
as a COM port automatically. The Arduino software includes a serial monitor which allows
simple textual data to be sent to and from the board. The RX and TX LEDs on the board will
flash when data is being transmitted via the ATmega8U2/16U2 chip and USB connection to
the computer (but not for serial communication on pins 0 and 1).
A SoftwareSerial library allows for serial communication on any of the MEGA ADK's digital
pins.
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The ATmega2560 also supports TWI and SPI communication. The Arduino software includes
a Wire library to simplify use of the TWI bus; see the Wire library for details. For SPI
communication, use the SPI library.
The USB host interface given by MAX3421E IC allows the Arduino MEGA ADK to connect
and interact to any type of device that have a USB port. For example, allows you to interact
with many types of phones, controlling Canon cameras, interfacing with keyboard, mouse and
games controllers as Wiimote and PS3.

Arduino Mega ADK Specifications

General

Brand	Arduino
Model	Mega ADK
Category	Computer Hardware
Language	English