Overview
●ATtiny261A/461A/861A are low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the devices achieve 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
● – Up to 20 MIPS Throughput at 20 MHz
●• High Endurance Non-volatile Memory Segments
● – 2/4/8K Bytes of In-System Self-Programmable Flash Program Memory
●• Endurance: 10,000 Write/Erase Cycles
● – 128/256/512 Bytes of In-System Programmable EEPROM
●• Endurance: 100,000 Write/Erase Cycles
● – 128/256/512 Bytes of Internal SRAM
● – Data retention: 20 Years at 85°C / 100 Years at 25°C
● – In-System Programmable via SPI Port
● – Programming Lock for Software Security
●• Peripheral Features
● – One 8/16-bit Timer/Counter with Prescaler
● – One 8/10-bit High Speed Timer/Counter with Prescaler
●• 3 High Frequency PWM Outputs with Separate Output Compare Registers
●• Programmable Dead Time Generator
● – 10-bit ADC
●• 11 Single-Ended Channels
●• 16 Differential ADC Channel Pairs
●• 15 Differential ADC Channel Pairs with Programmable Gain (1x, 8x, 20x, 32x)
● – On-Chip Analog Comparator
● – Programmable Watchdog Timer with Separate On-Chip Oscillator
● – Universal Serial Interface with Start Condition Detector
● – Interrupt and Wake-up on Pin Change
●• Special Microcontroller Features
● – debugWIRE On-Chip Debug System
● – Power-on Reset and Programmable Brown-out Detection
● – Internal Calibrated Oscillator
● – External and Internal Interrupt Sources
● – Four Sleep Modes: Low Power Idle, ADC Noise Reduction, Standby and Power Down
● – On-Chip Temperature Sensor
●• I/O and Packages
● – 16 Programmable I/O Lines
● – 20-pin PDIP, 20-pin SOIC, 20-pin TSSOP and 32-pad MLF
●• Operating Voltage
● – 1.8 – 5.5V
●• Speed Grades
● – 0 – 4 MHz @ 1.8 – 5.5V
● – 0 – 10 MHz @ 2.7 – 5.5V
● – 0 – 20 MHz @ 4.5 – 5.5V
●• Power Consumption at 1 MHz, 1.8V, 25°C
● – Active: 200 µA
● – Power-Down Mode: 0.1 µA
