173-25-159,Microcontroller 8 Bit DIL-8, ATTINY45-20PU, Atmel
| Bus width | 8 Bit |
| Flash memory | 4 kByte |
| EEPROM | 256 Byte |
| SRAM | 256 Byte |
| No. of I/Os | 6 |
| No. of timers | 2 |
| ADC channels | 4 |
| ADC resolution | 10 Bit |
| Clock frequency max. | 20 MHz |
| Power supply | 2.7...5.5 V |
| Package | DIL-8 |
| Operating temperature | -40...+85 °C |
| Extras | debugWire |
| No. of comparators | 1 |
