(ADC4/USCK/SCL/T1/PCINT4)PA41(ADC3/T0/PCINT3)PA32(ADC2/AIN1/PCINT2)PA23(ADC1/AIN0/PCINT1)PA14(ADC0/AREF/PCINT0)PA05DNC6DNC7GND8VCC9DNC10PB0(PCINT8/XTAL1/CLKI)11PB1(PCINT9/XTAL2)12PB3(PCINT11/RESET#/dW)13PB2(PCINT10/INT0/OC0A/CKOUT)14PA7(PCINT7/ICP/OC0B/ADC7)15PA6(PCINT6/OC1A/SDA/MOSI/DI/ADC6)16DNC17DNC18DNC19PA5(ADC5/DO/MISO/OC1B/PCINT5)20EP21