ATtiny85 is a high performance, low power 8-bit microcontroller based on Advanced RISC Architecture. It has 8 Kbytes of In-System Programmable Flash and is popular because of its compact size and its features.
ATTINY85 is cheap and easily available for experimenting
ATTINY85 has many reference data available making it easy to work with.
Also ATTINY85 provides many features in lesser pins.
With program memory of 8Kbytes the controller has satisfying memory for many applications.
With various POWER SAVE modes it can work on battery operated applications.
With its small and compact size it can be put in many small boards.
With watchdog timer and other features the use on ATTINY85 is further promoted.
