| Arduino | AVR | Bemerkung |
|---|---|---|
| Analog 0 | PC0/ADC0 | |
| Analog 1 | PC1/ADC1 | |
| Analog 2 | PC2/ADC2 | |
| Analog 3 | PC3/ADC3 | |
| Analog 4 | PC4/ADC4 | |
| Analog 5 | PC5/ADC5 | |
| Analog 6 | Nur bei AVR im 32-Pin Gehäuse | |
| Analog 7 | Nur bei AVR im 32-Pin Gehäuse | |
| Digital 0 | PD0/RXD | |
| Digital 1 | PD1/TXD | |
| Digital 2 | PD2/INT0 | |
| Digital 3 (PWM) | PD3/INT1/OC2B | |
| Digital 4 | PD4 | |
| Digital 5 (PWM) | PD5/OC0B | |
| Digital 6 (PWM) | PD6/OC0A | |
| Digital 7 | PD7 | |
| Digital 8 | PB0 | |
| Digital 9 (PWM) | PB1/OC1A | |
| Digital 10 (PWM) | PB2/OC1B/SS | |
| Digital 11 (PWM) | PB3/OC2A/MOSI | |
| Digital 12 | PB4/MISO | |
| Digital 13 | PB5/SCK |