Arduino Mega ADK User Manual

USB Overcurrent Protection
The Arduino MEGA ADK has a resettable poly fuse that protects your computer's USB ports
from shorts and overcurrent. Although most computers provide their own internal
protection, the fuse provides an extra layer of protection. If more than 500 mA is applied to
the USB port, the fuse will automatically break the connection until the short or overload is
removed.
Physical Characteristics and Shield Compatibility
The maximum length and width of the MEGA ADK PCB are 4 and 2.1 inches respectively, with
the USB connector and power jack extending beyond the former dimension. Three screw
holes allow the board to be attached to a surface or case. Note that the distance between
digital pins 7 and 8 is 160 mil (0.16"), not an even multiple of the 100 mil spacing of the other
pins.
The MEGA ADK is designed to be compatible with most shields designed for the Uno,
Diecimila or Duemilanove. Digital pins 0 to 13 (and the adjacent AREF and GND pins), analog
inputs 0 to 5, the power header, and ICSP header are all in equivalent locations. Further the
main UART (serial port) is located on the same pins (0 and 1), as are external interrupts 0
and 1 (pins 2 and 3 respectively). SPI is available through the ICSP header on both the
MEGA ADK and Duemilanove / Diecimila.Please note that I
2
C is not located on the same pins
on the MEGA ADK (20 and 21) as the Duemilanove / Diecimila (analog inputs 4 and 5).
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Arduino Mega ADK Specifications

General

Brand	Arduino
Model	Mega ADK
Category	Computer Hardware
Language	English