2.1.1 Peripheral Summary
| ATtiny417 | ATtiny814 | ATtiny816 | ATtiny817 | |
|---|---|---|---|---|
| Pins | 24 | 14 | 20 | 24 |
| SRAM | 256B | 512B | 512B | 512B |
| Flash | 4 KB | 8 KB | 8 KB | 8 KB |
| EEPROM | 128B | 128B | 128B | 128B |
| Max. frequency (MHz) | 20 | 20 | 20 | 20 |
| 16-bit Timer/Counter type A (TCA) | 1 | 1 | 1 | 1 |
| 16-bit Timer/Counter type B (TCB) | 1 | 1 | 1 | 1 |
| 12-bit Timer/Counter type D (TCD) | 1 | 1 | 1 | 1 |
| Real-Time Counter (RTC) | 1 | 1 | 1 | 1 |
| USART | 1 | 1 | 1 | 1 |
| SPI | 1 | 1 | 1 | 1 |
| TWI (I2C) | 1 | 1 | 1 | 1 |
| ADC | 1 | 1 | 1 | 1 |
| ADC channels | 12 | 10 | 12 | 12 |
| DAC | 1 | 1 | 1 | 1 |
| AC | 1 | 1 | 1 | 1 |
| AC inputs | 2p/2n | 1p/1n | 2p/2n | 2p/2n |
| Peripheral Touch Controller (PTC)(1) | No | 1 | 1 | 1 |
| PTC number of self-capacitance channels | - | 6 | 6 | 6 |
| PTC number of mutual capacitance channels | - | 9 | 9 | 9 |
| Configurable Custom Logic | 1 | 1 | 1 | 1 |
| Window Watchdog | 1 | 1 | 1 | 1 |
| Event System channels | 6 | 6 | 6 | 6 |
| General purpose I/O | 22 | 12 | 18 | 22 |
| External interrupts | 22 | 12 | 18 | 22 |
| CRCSCAN | 1 | 1 | 1 | 1 |
Note:
- The PTC takes control over the ADC0 while the PTC is used.