01. Microcontroller:
ATmega32u4;
02. Operating voltage: 5V;
03. Input voltage (recommended): 7 to 12V;
04. Input voltage (limits): 6 to 20V;
05. Digital I/O pins: 20;
06. PWM channels: 7;
07. Analog input channels: 12;
08. DC current per I/O pin: 40mA;
09. DC current for 3.3V pin: 50mA;
10. Flash memory: 32KB (ATmega32u4) of which 4 KB used by
bootloader;
11. SRAM: 2.5KB (ATmega32u4);
12. EEPROM: 1KB (ATmega32u4);
13. Clock speed: 16MHz.
