2.1.1 Peripheral Summary
| ATtiny3216 | ATtiny3217 | |
|---|---|---|
| Pins | 20 | 24 |
| SRAM | 2 KB | 2 KB |
| Flash | 32 KB | 32 KB |
| EEPROM | 256B | 256B |
| Max. frequency (MHz) | 16 | 16 |
| 16-bit Timer/Counter type A (TCA) | 1 | 1 |
| 16-bit Timer/Counter type B (TCB) | 2 | 2 |
| 12-bit Timer/Counter type D (TCD) | 1 | 1 |
| Real-Time Counter (RTC) | 1 | 1 |
| USART | 1 | 1 |
| SPI | 1 | 1 |
| TWI (I2C) | 1 | 1 |
| ADC | 2 | 2 |
| ADC channels | 12+8 | 12+12 |
| DAC | 3 | 3 |
| AC | 3 | 3 |
| AC inputs |
3p/2n+ |
4p/2n+ |
| Peripheral Touch Controller (PTC)(1) | 1 | 1 |
| PTC number of self-capacitance channels | 12 | 14 |
| PTC number of mutual capacitance channels | 36 | 49 |
| Configurable Custom Logic | 1 | 1 |
| Window Watchdog | 1 | 1 |
| Event System channels | 6 | 6 |
| General purpose I/O | 18 | 22 |
| External interrupts | 18 | 22 |
| CRCSCAN | 1 | 1 |
Note:
- The PTC takes control over the ADC0 while the PTC is used.