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
• High Endurance, Non-Volatile Memory Segments
   – 2K/4K Bytes of In-System, Self-Programmable Flash Program Memory
        • Endurance: 10,000 Write/Erase Cycles
   – 128/256 Bytes of In-System Programmable EEPROM
        • Endurance: 100,000 Write/Erase Cycles
   – 128/256 Bytes of Internal SRAM
   – Data retention: 20 years at 85°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 with Software Disable Function
   – Internal Calibrated Oscillator
   – On-Chip Temperature Sensor
• I/O and Packages
   – Available in 20-Pin QFN/MLF/VQFN, 14-Pin SOIC, 14-pin PDIP and 15-ball UFBGA
   – Twelve Programmable I/O Lines
• Operating Voltage:
   – 1.8 – 5.5V
• Speed Grade:
   – 0 – 4 MHz @ 1.8 – 5.5V
   – 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:
      • 210 µA at 1.8V and 1MHz
   – Idle Mode:
      • 33 µA at 1.8V and 1MHz
   – Power-Down Mode:
      • 0.1 µA at 1.8V and 25°C