2 Peripheral Overview
|
Device |
ATtiny3224 |
ATtiny3226 |
ATtiny3227 |
|---|---|---|---|
| Pins | 14 | 20 | 24 |
| Package | SOIC, TSSOP | SOIC, SSOP,VQFN | VQFN |
| Maximum frequency (MHz) | 20 | 20 | 20 |
| General purpose I/O | 12 | 18 | 22 |
| PORT |
PA[7:0] |
PA[7:0] |
PA[7:0] |
| External interrupts | 12 | 18 | 22 |
| Event system channels | 6 | 6 | 6 |
| CCL LUTs | 4 | 4 | 4 |
| Real-Time Counter (RTC) | 1 | 1 | 1 |
| 16-bit Timer/Counter type A (TCA) | 1 | 1 | 1 |
| 16-bit Timer/Counter type B (TCB) | 2 | 2 | 2 |
| 12-bit Timer/Counter type D (TCD) | - | - | - |
| USART/SPI host | 2 | 2 | 2 |
| SPI | 1 | 1 | 1 |
| TWI (I2C) | 1 | 1 | 1 |
| ADC (channels) | 1 (9) | 1 (15) | 1 (15) |
| DAC | - | - | - |
| Analog Comparators (inputs) | 1 (2p/2n) | 1 (3p/3n) | 1 (4p/3n) |
| Peripheral Touch Controller (PTC) (self cap/mutual cap channels) | - | - | - |
| Unified Program and Debug Interface (UPDI) activated by shared pin using high-voltage signal or fuse override | 1 | 1 | 1 |