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ATMEGA3208-AF

MCHPATMEGA3208-AF

Microchip Technology
AVR megaAVR® 0, Functional Safety (FuSa) Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 32-TQFP (7x7)
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Overview

The ATMEGA3208-AF is a member of the megaAVR 0-series, an 8-bit microcontroller featuring the AVR processor with a hardware multiplier, running at speeds up to 20MHz. This specific variant is designed with Functional Safety (FuSa) features, making it suitable for industrial and safety-critical applications requiring high reliability in a 32-TQFP package. It integrates 32KB of Flash, 4KB of SRAM, and a rich set of Core Independent Peripherals (CIPs) that reduce CPU overhead.

Why Choose This Part

This MCU features an Event System and Configurable Custom Logic (CCL) that allow peripherals to communicate and respond to triggers without CPU wake-up, increasing predictability. It provides a significant RAM-to-Flash ratio (4KB SRAM to 32KB Flash) for an 8-bit device, supporting more complex communication stacks or data buffering. The inclusion of Functional Safety (FuSa) support simplifies the certification process for safety-critical end products.

Applications

Industrial Safety Controllers
Utilizing integrated Functional Safety features for monitoring and control in factory automation.
Home Appliance Control
Managing motor control and user interfaces in white goods with reliable internal oscillators and hardware multipliers.
Sensor Node Processing
Using the 10-bit ADC and Event System to process sensor data without constant CPU intervention to save power.
Core Independent Logic Tasks
Implementing simple glue logic or hardware state machines using the four-LUT Configurable Custom Logic (CCL).

Key Specifications

Speed 20MHz
RAM Size 4K x 8
Core Size 8-Bit
EEPROM Size 256 x 8
Peripherals Brown-out Detect/Reset, POR, WDT
Connectivity I2C, SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 27
Core Processor AVR
Package / Case 32-TQFP
Data Converters A/D 12x10b
Oscillator Type Internal
Program Memory Size 32KB (32K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 32-TQFP (7x7)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Developers can evaluate this part using the ATmega3208 Curiosity Nano evaluation kit. Development is supported by Microchip Studio and MPLAB X IDEs, utilizing the XC8 compiler and the single-pin Unified Program Debug Interface (UPDI) for programming and debugging. Practical implementation is streamlined through the ATMEL Start or MPLAB Code Configurator (MCC) graphical configuration tools.

Also Consider

ATMEGA3209-AF MCHPMicrochip Technology - Provides additional I/O pins in a 48-pin TQFP package while maintaining the same 32KB Flash and core features.
ATSAMD21G18A-AU MCHPMicrochip Technology - Suitable if a transition to 32-bit ARM Cortex-M0+ architecture is needed for higher computational requirements.

Categories

Microcontrollers > AVR Microcontrollers > Microchip Industrial & Automation > Functional Safety