Eight pins, five of them usable I/O. Perfect for the small permanent thing at the end of a prototype - a fan controller, a blink pattern, a battery cut-off - where an Uno would be silly.
Specifications
| Microcontroller | ATtiny85 |
| Clock speed | Up to 20 MHz |
| Flash / SRAM / EEPROM | 8 KB / 512 B / 512 B |
| I/O pins | 6 |
| Package | 8-pin DIP |
| Operating voltage | 2.7-5.5 V |
