GND4VCC8PB2 (SCK/USCK/SCL/ADC1/T0/INT0/PCINT2)7PB1 (MISO/DO/AIN1/OC0B/OC1A/PCINT1)6PB0 (MOSI/DI/SDA/AIN0/OC0A/OC1A/AREF/PCINT0)5PB4 (PCINT4/XTAL2/CLKO/OC1B/ADC2)3PB3 (PCINT3/XTAL1/CLKI/OC1B/ADC3)2PB5 (PCINT5/RESET/ADC0/DW)1