Overview
The ATtiny13 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 ATtiny13 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.

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
   – 1K Byte of In-System Programmable Program Memory Flash Endurance: 10,000 Write/Erase Cycles
   – 64 Bytes In-System Programmable EEPROM Endurance: 100,000 Write/Erase Cycles
   – 64 Bytes Internal SRAM
   – Programming Lock for Self-Programming Flash Program and EEPROM Data Security
• Peripheral Features
   – One 8-bit Timer/Counter with Prescaler and Two PWM Channels
   – 4-channel, 10-bit ADC with Internal Voltage Reference
   – 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
   – 8-pin PDIP/SOIC: Six Programmable I/O Lines
• Operating Voltage:
   – 1.8 - 5.5V for ATtiny13V
   – 2.7 - 5.5V for ATtiny13
• Speed Grade
   – ATtiny13V: 0 - 6 MHz @ 1.8 - 5.5V, 0 - 12 MHz @ 2.7 - 5.5V
   – ATtiny13: 0 - 12 MHz @ 2.7 - 5.5V, 0 - 24 MHz @ 4.5 - 5.5V
• Industrial Temperature Range
• Low Power Consumption
   – Active Mode:
      1 MHz, 1.8V: 240µA
   – Power-down Mode:
      < 0.1µA at 1.8V