Overview
The ATtiny24/44/84 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 ATtiny24/44/84 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 Programmable Program Memory Flash (ATtiny24/44/84)
      Endurance: 10,000 Write/Erase Cycles
   – 128/256/512 Bytes In-System Programmable EEPROM (ATtiny24/44/84)
      Endurance: 100,000 Write/Erase Cycles
   – 128/256/512 Bytes Internal SRAM (ATtiny24/44/84)
   – Programming Lock for Self-Programming Flash Program and EEPROM Data
      Security
• Peripheral Features
   – Two Timer/Counters, 8- and 16-bit counters with two PWM Channels on both
   – 10-bit ADC
      8 single-ended channels
      12 differential ADC channel pairs with programmable gain (1x, 20x)
      Temperature Measurement
   – Programmable Watchdog Timer with Separate On-chip Oscillator
   – On-chip Analog Comparator
   – Universal Serial Interface
• Special Microcontroller Features
   – debugWIRE On-chip Debug System
   – In-System Programmable via SPI Port
   – External and Internal Interrupt Sources
   – Pin Change Interrupt on 12 pins
   – Low Power Idle, ADC Noise Reduction, Standby and Power-down Modes
   – Enhanced Power-on Reset Circuit
   – Programmable Brown-out Detection Circuit
   – Internal Calibrated Oscillator
   – On-chip Temperature Sensor
• I/O and Packages
   – 14-pin SOIC, PDIP and 20-pin QFN/MLF: Twelve Programmable I/O Lines
• Operating Voltage:
   – 1.8 - 5.5V for ATtiny24V/44V/84V
   – 2.7 - 5.5V for ATtiny24/44/84
• Speed Grade
   – ATtiny24V/44V/84V: 0 - 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5V
   – ATtiny24/44/84: 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: 380 µA
   – Power-down Mode:
      1.8V: 100 nA