Arduino Due

control:  AT91SAM3X8E
working Voltage 3.3V
input voltage (recommended)  7-12V
input voltage（limited）  6-20V
digital I/O pin  54 ( 12 channel PWM output)
analog input channel   Pins 12
analog output channel Pins 2 (DAC)
IO output current 130 mA
3.3V output capacity   800 mA
5V output capacity   800 mA
Flash    512 KB 
SRAM   96 KB ( 64KB and 32KB)
time frequency   84 MHz