1 Features

  • AVR® CPU
    • Single-cycle I/O access
    • Two-level interrupt controller
    • Two-cycle hardware multiplier
  • Memories
    • Up to 48 KB In-system self-programmable Flash memory
    • 256B EEPROM
    • Up to 6 KB SRAM
    • Write/Erase endurance:
      • Flash 10,000 cycles
      • EEPROM 100,000 cycles
    • Data retention: 40 Years at 55°C
  • System
    • Power-on Reset (POR) circuit
    • Brown-out Detector (BOD)
    • Clock options:
      • 16/20 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 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 limited wake-up functionality
  • Peripherals
    • One 16-bit Timer/Counter type A (TCA) with a dedicated period register and three compare channels
    • Four 16-bit Timer/Counter type B with input capture (TCB)
    • One 16-bit Real-Time Counter (RTC) running from an external crystal or an internal RC oscillator
    • Four USART with fractional baud rate generator, auto-baud, and start-of-frame detection
    • Master/slave Serial Peripheral Interface (SPI)
    • Dual mode Master/Slave 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 up to four programmable Look-up Tables (LUT)
    • One Analog Comparator (AC) with a scalable reference input
    • One 10-bit 150 ksps Analog to Digital Converter (ADC)
    • Five selectable internal voltage references: 0.55V, 1.1V, 1.5V, 2.5V, and 4.3V
    • CRC code memory scan hardware
      • Optional automatic scan before code execution is allowed
    • Watchdog Timer (WDT) with Window mode, with separate on-chip oscillator
    • External interrupt on all general purpose pins
  • I/O and Packages:
    • 34 programmable I/O lines
    • 40-pin PDIP
  • Temperature Range: -40°C to 125°C
  • Speed Grades -40°C to 105°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