Overview
●The ATtiny261/461/861 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 ATtiny261/461/861 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
● – 123 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 Programmable Program Memory Flash (ATtiny261/461/861) Endurance: 10,000 Write/Erase Cycles
● – 128/256/512 Bytes In-System Programmable EEPROM (ATtiny261/461/861) Endurance: 100,000 Write/Erase Cycles
● – 128/256/512 Bytes Internal SRAM (ATtiny261/461/861)
● – Programming Lock for Self-Programming Flash Program and EEPROM Data Security
●• Peripheral Features
● – 8/16-bit Timer/Counter with Prescaler
● – 8/10-bit High Speed Timer/Counter with Separate Prescaler
●3 High Frequency PWM Outputs with Separate Output Compare Registers Programmable Dead Time Generator
● – Universal Serial Interface with Start Condition Detector
● – 10-bit ADC
● 11 Single Ended Channels
● 16 Differential ADC Channel Pairs
● 15 Differential ADC Channel Pairs with Programmable Gain (1x, 8x, 20x, 32x)
● – 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
● – 16 Programmable I/O Lines
● – 20-pin SOIC, 32-pad MLF and 20-lead TSSOP
●• Operating Voltage:
● – 2.7 - 5.5V for ATtiny261/461/861
●• Speed Grade:
● – ATtiny261/461/861: 0 - 8 MHz @ 2.7 - 5.5V, 0 - 16 MHz @ 4.5 - 5.5V
● – Operating temperature: Automotive (-40°C to +125°C)
●• Low Power Consumption
● – Active Mode ATD On: 1 MHz, 2.7V, 25°C: 300 µA
● – Power-down Mode no Watchdog: 2.7V, 25°C: 0.12 µA
