Microcontroller ATmega328Operating Voltage 5VInput Voltage (recommended) 7-12VInput Voltage (limits) 6-20VDigital I/O Pins 14 (of which 6 provide PWM output)Analog Input Pins 6DC Current per I/O Pin 40 mADC Current for 3.3V Pin 50 mAFlash Memory 32 KB (ATmega328) of which 0.5 KB used by bootloaderSRAM 2 KB (ATmega328)EEPROM 1 KB (ATmega328)Clock Speed 16 MHzLength 68.6 mmWidth 53.4 mm
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