Overview
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 Bytes of In-System Programmable Program Memory Flash
      • 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 1°C / 100 years at 25°C
   – Programming Lock for Self-Programming Flash & EEPROM Data Security
• Peripheral Features
   – One 8-Bit and One 16-Bit Timer/Counter with Two PWM Channels, Each
   – 10-bit ADC
      • 8 Single-Ended Channels
      • 12 Differential ADC Channel Pairs with Programmable Gain (1x / 20x)
   – 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
   – Internal and External 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
   – Available in 20-Pin QFN/MLF & 14-Pin SOIC and PDIP
   – 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: -40°C to +85°C
• Low Power Consumption
   – Active Mode (1 MHz System Clock): 300 µA @ 1.8V
   – Power-Down Mode: 0.1 µA @ 1.8V