PA71PC02PC13PC24PC35PD06PD17PD28PD39PD410PD511PD612PD713AVDD14GND15PF0(TOSC1)16PF1(TOSC2)17PF6(RESET#)18UPDI19VDD20GND21PA0(EXTCLK)22PA123PA224PA325PA426PA527PA628