2 ATtiny 26 460 560 150 180 350 380 32 NC (OC1B) PB3 NC VCC GND NC (ADC7/XTAL1) PB4 (ADC8/XTAL2) PB5 NC (ADC9/INT0/T0) PB6 (ADC10/RESET) PB7 NC (ADC6/AIN1) PA7 (ADC5/AIN0) PA6 (ADC4) PA5 NC PA4 (ADC3) AVCC NC NC GND PA3 (AREF) PA2 (ADC2) NC PA1 (ADC1) PA0 (ADC0) NC NC NC PB0 (MOSI/DI/SDA/OC1A) PB1 (MISO/DO/OC1A) PB2 (SCK/SCL/OC1B)