PB0/Key11PB1/Key22PB2/Key33PB3/Key44PB4/Key55PB5/Key66VSS7VDD8PD0/AN0/VREF9PD1/AN110PA711PA4/INT12PA3/SCS#13PA2/SCK/SCL/ICPCK/OCDSCK14PA1/SDO15PA0/SDI/SDA/ICPDA/OCDSDA16