Arduino Pin Reference

Pin reference for Arduino Uno/Nano/Mega: digital, analog, PWM, SPI, I2C, interrupt-capable pins. Visual pinout.

Board

Filter Pin Function

Operating Voltage: Uno/Nano 5V, Mega 5V

Max Pin Current: 20mA per pin (40mA absolute max)

ADC Resolution: 10-bit (0-1023)

PWM Frequency: 490 Hz (pin 5,6: 980 Hz)

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