Microchip Technology ATmega3208 Microcontrollers

Microchip Technology ATmega3208 Microcontrollers (MCUs) of the megaAVR® 0-series use the AVR® processor with hardware multiplier. These MCUs run up to 20MHz, up to 6kB of SRAM, and 256bytes of EEPROM in the 28, 32, or 48-pin package. The ATmega3208 MCUs use technologies with a flexible, low-power architecture, including an event system and sleepwalking, accurate analog features, and advanced peripherals. These MCUs offer a range of Flash sizes from 32kB to 48kB in a 32-pin package.


  • AVR® CPU
    • Single-cycle I/O access
    • Two-level interrupt controller
    • Two-cycle hardware multiplier
  • 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
  • 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
  • -40°C to 125°C temperature range
  • Speed grades
    • 0 to 5MHz @ 1.8V to 5.5V range
    • 0 to 10MHz @ 2.7V to 5.5V range
    • 0 to 20MHz @ 4.5V to 5.5V range
  • Peripherals
    • One 16-bit Timer/Counter type A with a dedicated period register, three compare channels (TCA)
    • Three 16-bit Timer/Counter type B with input capture (TCB)
    • One 16-bit Real Time Counter (RTC) running from an external crystal or internal RC oscillator
    • Three USART with fractional baud rate generator, autobaud, and start-of-frame detection
    • Master/slave Serial Peripheral Interface (SPI)
    • Dual mode Master/Slave TWI with a dual address match
      • Standard mode (Sm, 100kHz)
      • Fast mode (Fm, 400kHz)
      • Fast mode plus (Fm+, 1MHz)
    • Event System for CPU independent and predictable inter-peripheral signaling
    • Configurable Custom Logic (CCL) with up to four programmable Lookup Tables (LUT)
    • One Analog Comparator (AC) with a scalable reference input
    • One 10-bit 150ksps Analog to Digital Converter (ADC)
    • 0.55V, 1.1V, 1.5V, 2.5V, and 4.3V selectable internal voltage references
    • CRC code memory scan hardware
      • Optional automatic scan after reset
    • Watchdog Timer (WDT) with Window mode and with a separate on-chip oscillator
    • External interrupt on all general-purpose pins
  • I/O and packages
    • 27 programmable I/O lines
    • 32-pin VQFN 5mm x 5mm and TQFP 7mm x 7mm

ATMEGA3208 MCU Block Diagram

Block Diagram - Microchip Technology ATmega3208 Microcontrollers
Publicado: 2018-07-01 | Atualizado: 2022-11-09