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Overview

The ATtiny25/45/85 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny25/45/85 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

? High Performance, Low Power AVR? 8-Bit Microcontroller

? Advanced RISC Architecture

– 120 Powerful Instructions – Most Single Clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

? Non-volatile Program and Data Memories

– 2/4/8K Bytes of In-System Programmable Program Memory Flash

? Endurance: 10,000 Write/Erase Cycles

– 128/256/512 Bytes In-System Programmable EEPROM

? Endurance: 100,000 Write/Erase Cycles

– 128/256/512 Bytes Internal SRAM

– Programming Lock for Self-Programming Flash Program and EEPROM Data Security

? Peripheral Features

– 8-bit Timer/Counter with Prescaler and Two PWM Channels

– 8-bit High Speed Timer/Counter with Separate Prescaler

? 2 High Frequency PWM Outputs with Separate Output Compare Registers

? Programmable Dead Time Generator

– USI – Universal Serial Interface with Start Condition Detector

– 10-bit ADC

? 4 Single Ended Channels

? 2 Differential ADC Channel Pairs with Programmable Gain (1x, 20x)

? Temperature Measurement

– Programmable Watchdog Timer with Separate On-chip Oscillator

– On-chip Analog Comparator

? 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, 8-pin SOIC, 20-pad QFN/MLF, and 8-pin TSSOP (only ATtiny45/V)

? Operating Voltage

– 1.8 - 5.5V for ATtiny25V/45V/85V

– 2.7 - 5.5V for ATtiny25/45/85

? Speed Grade

– ATtiny25V/45V/85V: 0 – 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5V

– ATtiny25/45/85: 0 – 10 MHz @ 2.7 - 5.5V, 0 - 20 MHz @ 4.5 - 5.5V

? Industrial Temperature Range

? Low Power Consumption

– Active Mode:

? 1 MHz, 1.8V: 300 μA

– Power-down Mode:

? 0.1 μA at 1.8V