TOPDUINO MEGA 2560
Working voltage: 5V
Input voltage: 7-24V
Digital I/O pin: 54 (14 pin is PWN output)
Analog input: 16
I/O pin limit current: 40 mA
3.3V pin limit current: 50 mA
Flash memory: 256 KB (8KB used at boot load)
Static access: 8 KB
Rewriting read-only memory: 4 KB
Clock speed: 16 MHz