Arduino Mega 2560 R3We are an shipping the latest version Arduino Mega 2560 R3. We are an authorized distributor and these are genuine Arduino Unos, made in Italy. The Arduino Mega is a microcontroller board based on the ATmega2560. We are shipping the latest version (R3). 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.Schematic & Reference DesignEAGLE files: arduino-mega-reference-design.zipSchematic: arduino-mega-schematic.pdfSummaryMicrocontrollerATmega2560Operating Voltage5VInput Voltage (recommended)7-12VInput Voltage (limits)6-20VDigital I/O Pins54 (of which 15 provide PWM output)Analog Input Pins16DC Current per I/O Pin40 mADC Current for 3.3V Pin50 mAFlash Memory256 KB of which 4 KB used by bootloaderSRAM8 KBEEPROM4 KBClock Speed16 MHzPowerThe Arduino Mega can be powered via the USB connection or with an external power supply. The power source is selected automatically.External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack.
