| ATtiny406 | |
|---|---|
| Pins | 20 |
| SRAM | 256B |
| Flash | 4 KB |
| EEPROM | 128B |
| Max. frequency (MHz) | 20 |
| 16-bit Timer/Counter type A (TCA) | 1 |
| 16-bit Timer/Counter type B (TCB) | 1 |
| 12-bit Timer/Counter type D (TCD) | No |
| Real-Time Counter (RTC) | 1 |
| USART | 1 |
| SPI | 1 |
| TWI (I2C) | 1 |
| ADC | 1 |
| ADC channels | 12 |
| DAC | No |
| AC | 1 |
| AC inputs | 2p/2n |
| Peripheral Touch Controller (PTC) | No |
| Configurable Custom Logic | 1 |
| Window Watchdog | 1 |
| Event System channels | 3 |
| General purpose I/O | 18 |
| External interrupts | 18 |
| CRCSCAN | 1 |