(PCINT5/RESET#/ADC0/dW)PB51(PCINT3/XTAL1/CLKI/OC1B#/ADC3)PB32DNC3DNC4(PCINT4/XTAL2/CLKO/OC1B/ADC2)PB45DNC6DNC7GND8DNC9DNC10PB0(MOSI/DI/SDA/AIN0/OC0A/OC1A#/AREF/PCINT0)11PB1(MISO/DO/AIN1/OC0B/OC1A/PCINT1)12DNC13PB2(SCK/USCK/SCL/ADC1/T0/INT0/PCINT2)14VCC15DNC16DNC17DNC18DNC19DNC20GND21