Features

• High-Performance Low-Power AVR® CPU
  • Running at up to 20 MHz
  • Single-cycle I/O access
  • Two-level interrupt controller with vectored interrupts
  • Two-cycle hardware multiplier
  • Supply voltage range: 1.8V to 5.5V

• Memories
  • 16 KB In-System self-programmable Flash memory
  • 2 KB SRAM
  • 256 B EEPROM
  • 32B of user row in nonvolatile memory that can keep data during chip-erase and be programmed while the device is locked
  • 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 Detection (BOD)
  • Clock options
    • Lockable 20 MHz Low-Power internal oscillator
    • 32.768 kHz Ultra-Low Power (ULP) internal 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 and immediate wake-up time
    • Standby with configurable operation of selected peripherals
    • Power-Down with full data retention
• Peripherals
  • One 16-bit Timer/Counter type A (TCA) with a dedicated period register and three PWM channels
  • Two 16-bit Timer/Counters type B (TCB) with input capture and simple PWM functionality
  • One 16-bit Real-Time Counter (RTC) running from external 32.768 kHz crystal or internal 32.768 kHz ULP oscillator
  • Two Universal Synchronous Asynchronous Receiver Transmitters (USART) with fractional baud rate generator, auto-baud, and start-of-frame detection
  • Host/Client Serial Peripheral Interface (SPI)
  • Host/Client Two-Wire Interface (TWI) with dual address match
    • Standard mode (Sm, 100 kHz)
    • Fast mode (Fm, 400 kHz)
    • Fast mode plus (Fm+, 1 MHz)
  • Event System for CPU independent and predictable inter-peripheral signaling
  • Configurable Custom Logic (CCL) with four programmable Look-Up Tables (LUT)
  • One Analog Comparator (AC) with scalable reference input
  • One 12-bit differential 375 ksps Analog-to-Digital Converter (ADC) with Programmable Gain Amplifier (PGA) and up to 15 input channels
  • Multiple internal voltage references
    • 1.024V
    • 2.048V
    • 2.500V
    • 4.096V
    • VDD
  • Automated Cyclic Redundancy Check (CRC) flash memory scan
  • Watchdog Timer (WDT) with Window Mode, with a separate on-chip oscillator
  • External interrupt on all general purpose pins
• I/O and Packages
  • Up to 22 programmable I/O pins
  • 14-pin
    • SOIC
    • TSSOP
  • 20-pin
    • SOIC
    • SSOP
    • VQFN 3x3 mm
  • 24-pin
    • VQFN 4x4 mm
• Temperature Ranges
  • -40°C to 85°C (industrial)
  • -40°C to 125°C (extended)
• Speed Grades (-40°C to 85°C)
  • 0-5 MHz @ 1.8V – 5.5V
  • 0-10 MHz @ 2.7V – 5.5V
  • 0-20 MHz @ 4.5V – 5.5V
• Speed Grades (-40°C to 125°C)
  • 0-8 MHz @ 2.7V - 5.5V
  • 0-16 MHz @ 4.5V - 5.5V
• VAO variants available: Designed, manufactured, tested, and qualified in accordance with AEC-Q100 requirements for automotive applications.