Features
High Performance, Low Power AVR 8-Bit Microcontroller
Advanced RISC Architecture
Non-volatile Program and Data Memories
8-bit Timer/Counter with Prescaler and Two PWM Channels
Universal Serial Interface with Start Condition Detector

Special Microcontroller Features
– debugWIRE On-chip Debug System
– In-System Programmable via SPI Port
– External and Internal Interrupt Sources
– Low Power Idle, ADC Noise Reduction, and Power-down Modes
– Enhanced Power-on Reset Circuit
– Programmable Brown-out Detection Circuit
– Internal Calibrated Oscillator

I/O and Packages
– Six Programmable I/O Lines
– 8-pin PDIP and 8-pin SOIC

Operating Voltage
– 1.8 - 5.5V for ATtiny25/45/85V
– 2.7 - 5.5V for ATtiny25/45/85