PB4 (SS#/OC0B/PCINT12)44PB3 (AIN1/OC0A/PCINT11)43PB2 (AIN0/INT2/PCINT10)42PB1 (T1/CLKO/PCINT9)41PB0 (XCK0/T0/PCINT8)40GND39VCC38PA0 (ADC0/PCINT0)37PA1 (ADC1/PCINT1)36PA2 (ADC2/PCINT2)35PA3 (ADC3/PCINT3)34PA4 (ADC4/PCINT4)33PA5 (ADC5/PCINT5)32PA6 (ADC6/PCINT6)31PA7 (ADC7/PCINT7)30AREF29GND28AVCC27PC7 (TOSC2/PCINT23)26PC6 (TOSC1/PCINT22)25PC5 (TDI/PCINT21)24PC4 (TDO/PCINT20)23(PCINT19/TMS) PC322(PCINT18/TCK) PC221(PCINT17/SDA) PC120(PCINT16/SCL) PC019GND18VCC17(PCINT31/OC2A) PD716(PCINT30/OC2B/ICP) PD615(PCINT29/OC1A) PD514(PCINT28/XCK1/OC1B) PD413(PCINT27/TXD1/INT1) PD312(PCINT26/RXD1/INT0) PD211(PCINT25/TXD0) PD110(PCINT24/RXD0/T3*) PD09XTAL18XTAL27GND6VCC5RESET#4(PCINT15/OC3B/SCK) PB73(PCINT14/OC3A/MISO) PB62(PCINT13/ICP3/MOSI) PB51EP45