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Microcontroller Microchip ATmega2560Operating Voltage 5VUSB 1 - Type BDigital I/O Pins 54PWM Pins 15Analog Input Pins 16DC Current per I/O Pin 20 mADC Current for 3.3V Pin 50 mAFlash Memory 256 KBSRAM 8 KBEEPROM 4 KBClock Speed 16 MHz