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/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
   – 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 1 MHz
   – Idle Mode:
• 33 µA at 1.8V and 1 MHz
   – Power-down Mode:
• 0.1 µA at 1.8V and 25°C