Features

High Performance, Low-Power AVR® 8-bit Microcontroller Family
  • Advanced RISC Architecture
    • 131 Powerful Instructions
    • Most Single Clock Cycle Execution
    • 32 x 8 General Purpose Working Registers
    • Fully Static Operation
    • Up to 20 MIPS Throughput at 20 MHz
    • On-Chip 2-Cycle Multiplier
  • High Endurance Nonvolatile Memory Segments
    • 32 KB of In-System Self-Programmable Flash program memory
    • 1 KB EEPROM
    • 2 KB Internal SRAM
    • Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
    • Optional Boot Code Section with Independent Lock Bits
      • In-System Programming by On-chip Boot Program
      • True Read-While-Write Operation
    • Programming Lock for Software Security
  • Peripheral Features
    • Peripheral Touch Controller (PTC)
      • Capacitive Touch Buttons, Sliders, and Wheels
      • 24 Self-Cap Channels and 144 Mutual Cap Channels
    • Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
    • Three 16-bit Timer/Counters with Separate Prescaler, Compare Mode, and Capture Mode
    • Real-Time Counter with Separate Oscillator
    • Ten PWM Channels
    • 8-channel 10-bit ADC
    • Two Programmable Serial USARTs
    • Two Master/Slave SPI Serial Interfaces
    • Two Byte-Oriented Two-Wire Serial Interfaces (Philips I2C Compatible)
    • Programmable Watchdog Timer with Separate On-chip Oscillator
    • On-Chip Analog Comparator
    • Interrupt and Wake-Up on Pin Change
  • Special Microcontroller Features
    • Power-On Reset and Programmable Brown-Out Detection
    • Internal 8 MHz Calibrated Oscillator
    • External and Internal Interrupt Sources
    • Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
    • Clock Failure Detection Mechanism and Switch to Internal 8 MHz RC Oscillator in case of Failure
    • Individual Serial Number to Represent a Unique ID
  • I/O and Packages
    • 27 Programmable I/O Lines
    • 32-pin TQFP and 32-pin QFN /MLF
  • Operating Voltage:
    • 1.8 - 5.5V
  • Temperature Range:
    • -40°C to 105°C
  • Speed Grade:
    • 0 - 4 MHz @ 1.8 - 5.5V
    • 0 - 10 MHz @ 2.7 - 5.5V
    • 0 - 20 MHz @ 4.5 - 5.5V
  • Power Consumption at 1 MHz, 1.8V, 25°C
    • Active Mode: 0.24 mA
    • Power-Down Mode: 0.2 μA
    • Power-Save Mode: 1.3 μA (Including 32 kHz RTC)