ATtiny25/45/85

ATtiny25, ATtiny45, and ATtiny85 are microcontrollers in the Atmel AVR family. All are available in either the 8-pin DIP, 8-pin SOIC, or the 20-pin QFN package with a 10 or 20 MHz clock speed. The higher clock speed version has a higher minimum operating voltage of 2.7 volts.

ATtiny25
The ATtiny25 has 2 KB of flash, 128 B of SRAM, 128 B of EEPROM and the following features:


 * 4 touch channels
 * 1 SPI
 * 1 I2C
 * 10-bit ADC with 4 channels
 * 1 analog comparator
 * temperature sensor
 * 2 timers
 * 6 PWM channels
 * internal RC oscillator
 * watchdog

ATtiny45
The ATtiny45 is identical to the ATtiny25 except that it has 4 KB of flash, 256 B of SRAM, 256 B of EEPROM, and 3 touch channels.

This device is also available in the 8-pin TSSOP package.

ATtiny85
The ATtiny85 is identical to the ATtiny25 except that is has 8 KB of flash, 512 B of SRAM, 512 B of EEPROM, and 3 touch channels.