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 Byte of In-System ProgrammableProgram Memory Flash (ATtiny25/45/85)
●• Endurance: 10,000 Write/Erase Cycles
●– 128/256/512 Bytes In-System ProgrammableEEPROM (ATtiny25/45/85)
●• Endurance: 100,000 Write/Erase Cycles
●– 128/256/512 Bytes InternalSRAM (ATtiny25/45/85)
●– 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
●– Universal Serial Interface with Start Condition Detector
●– 10-bit ADC
●• 4 Single Ended Channels
●• 2 Differential ADC Channel Pairs with Programmable Gain (1x, 20x)
●– 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-onReset Circuit
●– Programmable Brown-out Detection Circuit
●– Internal Calibrated Oscillator
●• I/O and Packages
●– Six Programmable I/O Lines
●– 8-pin SOIC
●– 20-pin QFN
●• Operating Voltage
●– 2.7 - 5.5V for ATtiny25/45/85
●• Speed Grade
●– ATtiny25/45/85: 0 - 8 MHz @ 2.7 - 5.5V, 0 - 16 MHz @ 4.5 - 5.5V
●• Automotive Temperature Range
●– -40°C to +125°C
●• Low Power Consumption
●– Active Mode:
●• 1 MHz, 2.7V: 300µA
●– Power-down Mode:
●• 0.2µA at 2.7V
