1 ATtiny 26 450 310 200 20 300 270 20 (MOSI/DI/SDA/OC1A) PB0 (MISO/DO/OC1A) PB1 (SCK/SCL/OC1B) PB2 (OC1B) PB3 VCC GND (ADC7/XTAL1) PB4 (ADC8/XTAL2) PB5 (ADC9/INT0/T0) PB6 (ADC10/RESET) PB7 PA0 (ADC0) PA1 (ADC1) PA2 (ADC2) PA3 (AREF) GND AVCC PA4 (ADC3) PA5 (ADC4) PA6 (ADC5/AIN0) PA7 (ADC6/AIN1)