Features

  • CPU
    • AVR® CPU
    • Running at up to 16 MHz
    • Single-cycle I/O access
    • Two-level interrupt controller
    • Two-cycle hardware multiplier
  • Memories
    • 4/8 KB In-system self-programmable Flash memory
    • 128B EEPROM
    • 256/512B SRAM
    • Write/erase endurance:
      • Flash: 10,000 cycles
      • EEPROM: 100,000 cycles
    • Data retention: 40 years at 55°C
  • System
    • Power-on Reset (POR)
    • Brown-out Detector (BOD)
    • Clock options:
      • 16 MHz low-power internal RC oscillator
      • 32.768 kHz Ultra Low-Power (ULP) internal RC oscillator
      • 32.768 kHz external crystal oscillator
      • External clock input
    • Single-pin Unified Program and Debug Interface (UPDI)
    • Three sleep modes:
      • Idle with all peripherals running for immediate wake-up
      • Standby
        • Configurable operation of selected peripherals
        • SleepWalking peripherals
      • Power-Down with full data retention
  • Peripherals
    • One 16-bit Timer/Counter Type A (TCA) with a dedicated period register and three compare channels
    • One 16-bit Timer/Counter Type B (TCB) with input capture
    • One 12-bit Timer/Counter Type D (TCD) optimized for control applications
    • One 16-bit Real-Time Counter (RTC) running from external crystal or internal RC oscillator
    • Watchdog Timer (WDT) with Window mode, with a separate on-chip oscillator
    • One USART with fractional baud rate generator, auto-baud, and start-of-frame detection
    • One master/slave Serial Peripheral Interface (SPI)
    • One Two-Wire Interface (TWI) with dual address match
      • Philips I2C compatible
      • Standard mode (Sm, 100 kHz)
      • Fast mode (Fm, 400 kHz)
      • Fast mode plus (Fm+, 1 MHz)
    • One Analog Comparator (AC) with a low propagation delay
    • One 10-bit 115 ksps Analog-to-Digital Converter (ADC)
    • One 8-bit Digital-to-Analog Converter (DAC)
    • Multiple voltage references (VREF):
      • 0.55V
      • 1.1V
      • 1.5V
      • 2.5V
      • 4.3V
    • Event System (EVSYS) for CPU independent and predictable inter-peripheral signaling
    • Configurable Custom Logic (CCL) with two programmable look-up tables
    • Automated CRC memory scan (CRCSCAN)
    • Peripheral Touch Controller (PTC)(1)
      • Capacitive touch buttons, sliders, wheels and 2D surfaces
      • Wake-up on touch
      • Driven shield for improved moisture and noise handling performance
      • Up to six self capacitance channels
      • Up to nine mutual capacitance channels
    • External interrupt on all general purpose pins
  • I/O and Packages:
    • 12/18/22 programmable I/O lines
    • 14-pin SOIC150
    • 20-pin VQFN 3x3 mm with wettable flanks
    • 20-pin SOIC300
    • 24-pin VQFN 4x4 mm with wettable flanks
  • Temperature Ranges:
    • -40°C to 105°C
    • -40°C to 125°C
  • Speed Grades:
    • 0-8 MHz @ 2.7V – 5.5V
    • 0-16 MHz @ 4.5V – 5.5V
Note:
  1. Only available in devices with 8 KB Flash.