Arduino Mega 2560

Arduino Mega ADK Feature : Microcontroller :ATmega2560 Operating Voltage :5V Input Voltage (recommended):7-12V Input Voltage (limits) :6-20V Digital I/O Pins:54 (of which 15 provide PWM output) Analog Input Pins :16 DC Current per I/O Pin :40 mA DC Current for 3.3V Pin :50 mA Flash Memory :256 KB of which 8 KB used by bootloader SRAM :8 KB EEPROM :4 KB Clock Speed :16 MHz