Detailed Specification

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Detailed Specifications

Arduino Pin Mappings

Arduino Mega 2560

Pin Reservations

Ethernet Shield (W5100)
- I2C Pins
  - Pin 20 (SDA), 21 (SCL)
- SPI Pins (Communicates through the ICSP header)
  - 11,12,13 SPI Bus(Uno/Other Atmega 328 boards)
  - Pin 10 SPI Select (All boards)
  - Pin 50 (MISO), 51 (MOSI), 52 (SCK), 53 (SS)(Mega/2560 only)
  - Pin 53 (Reserved - Mega only)

Ethernet shield SD card slot
- Pin 4 SPI Select (All boards)

Seeed Studio SD Card Shield
- Pin 9,10,11,12,13 (Uno)

Xbee Shield, on-board USB
- Pins 0,1

Additional Hardware Serial Ports
- Port 1: Pins 18,19 (TX/RX)
- Port 2: Pins 16,17 (TX/RX)
- Port 3: Pins 14,15 (TX/RX)

USB Host Shield from Circuits @ Home
- Pins 9,10 (Default Configuration)
- Solder traces can be cut and spliced for other configurations.

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