Microchip Technology ATmega3209 Microcontrollers

Microchip Technology ATmega3209 Microcontrollers megaAVR® 0-series uses the AVR® processor with hardware multiplier and runs up to 20MHz. These MCUs include memories of 6KB SRAM, 256bytes of EEPROM, and a wide range of flash size up to 48KB. The ATmega3209 MCUs use the latest technology with a flexible and low-power architecture, including Event System and SleepWalking, accurate analog features, and advanced peripherals.


  • AVR® CPU
    • Single-cycle I/O access
    • Two-level interrupt controller
    • Two-cycle hardware multiplier
  • System
    • Power-on Reset (POR) circuit
    • Brown-out Detection (BOD)
    • Clock options
      • 20MHz low-power internal oscillator with the fuse-protected frequency setting
      • 32.768kHz Ultra Low Power (ULP) internal oscillator
      • 32.768kHz external crystal oscillator
      • External clock input
    • Single-pin Unified Program Debug Interface (UPDI) 
      • Three sleep modes
        • Idle with all peripherals running and mode for an immediate wake-up time
        • Standby
          • Configurable operation of selected peripherals
          • SleepWalking peripherals
        • Power down with limited wake-up functionality
  • Memories
    • Up to 48KB In-system self-programmable flash memory
    • 256B EEPROM
    • Up to 6KB SRAM
    • Write/erase endurance
    • Flash 10,000 cycles
    • EEPROM 100,000 cycles
    • Data retention of 20 years at 85°C
  • I/O and Packages
    • 41 programmable I/O lines
    • 48-pin UQFN 6 x 6 and TQFP 7 x 7
  • -40°C to 125°C temperature range
  • Speed grades
    • 0-5MHz @ 1.8V to 5.5V
    • 0-10MHz @ 2.7V to 5.5V
    • 0-20MHz @ 4.5V to 5.5V and -40°C to 105°C

Block Diagram

Block Diagram - Microchip Technology ATmega3209 Microcontrollers
Published: 2018-06-04 | Updated: 2022-10-21