Microcontroller
ATmega328
Operating Voltage 5V
Input Voltage (recommended) 7-12V
DC Current for 3.3V Pin 150 mA
Input Voltage (limits) 6-20V
Analog Input Pins 6
Digital I/O Pins 14 (of which 6 provide PWM output)
DC Current per I/O Pin 40 mA
Flash Memory 32 KB (ATmega328) of which 0.5 KB used by bootloader SRAM
1 KB (ATmega328)
2 KB (ATmega328) EEPROM
Clock Speed 16 MHz