ATtiny model single chip integrated with micro controller and flash memory, including 1KB to 4KB, with a 32 KB to 256 KB.
In addition, these devices support SPI and TWI (with the I2C- compatibility) communication, provides maximum flexibility and the working voltage of 1.8V to 5.5V.
Through software control system clock frequency, to achieve the best balance between the system performance and power consumption, but also has been widely applied.