The Microchip ATtiny85 8-bit microcontroller is based AVR® RISC architecture. It operates on 1.8V to 5.5V voltage range. This microcontroller features 8KB of ISP Flash, 512B EEPROM, 512B SRAM, six general purpose I/O lines, 32 general purpose working registers, one 8-bit timer/counter with compare modes, one 8-bit high-speed timer/counter, USI, internal and external Interrupts, 4-channel 10-bit A/D converter, programmable watchdog timer with internal oscillator, three software selectable power saving modes, and debugWIRE for on-chip debugging.

Fully Static Operation
Programming Lock for Self-Programming Flash Program and EEPROM Data Security
8-bit Timer/Counter with Prescaler and Two PWM Channels
8-bit High Speed Timer/Counter with Separate Prescaler
USI – Universal Serial Interface with Start Condition Detector
Programmable Watchdog Timer with Separate On-chip Oscillator
On-chip Analog Comparator
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
Temperature range between -40°C to 85°C
8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) package