There are also 16 Analog Input Pins (A0 to A15). The value of the internal pull-up resistor will be in the range of 20KΩ to 50KΩ. An additional feature of the Digital IO pins is the availability of internal pull-up resistor (which is not connected by default). In that 54 pins (D0 to D53) are true digital IO pins, which can be configured as per you application using pinMode(), digitalWrite() and digitalRead() functions.Īll these Digital IO pins are capable of sourcing or sinking 20mA of current (maximum 40mA is allowed). Of the 86 pins available on the Mega board, 72 pins are associated with input and output. What are the Input and Output Pins of Arduino Mega?
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