AVR 8-bit Microcontrollers

Mechanical Buttons

ATmega324PB Xplained Pro contains two mechanical buttons. One button is the RESET button connected to the ATmega324PB reset line and the other is a generic user configurable button. When a button is pressed it will drive the I/O line to GND.

Notice: There is no pull-up resistor connected to the generic user button. Remember to enable the internal pull-up in the ATmega324PB to use the button.
Table 1. Mechanical Buttons
ATmega324PB pin Silkscreen text Shared functionality
RESET RESET -
PC6 SW0 EXT3.9/DGI GPIO3
Parent topic: Peripherals