Arduino mega

   Microcontroller                        ATmega2560  

 operating voltage                      5volts

  Input Voltage                            7volts to 12volts

 input voltage                              6volts to 20volts

 digital input/output pins             54(15 are PWM o/p).

Analog Input Pins                      16

DC Current each I/O pin            40 mA

DC Current                                3.3V Pin  50 mA

Flash Memory                            256 KB 

  (SRAM)                                    8 KB

   (EEPROM)                              4 KB

 (CLK) speed                             16 MHz

 USB host chip                           MAX3421E

 length                                        101.52 mm

 width                                          53.3 mm

 weight                                        36G

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