ATMEGA3209-AFR

Microcontrollers Overview

The ATMEGA3209-AFR is an 8-bit AVR microcontroller from the megaAVR 0-series, featuring 32 KB of in-system self-programmable Flash memory, 4 KB of SRAM, and 256 bytes of EEPROM. It operates at a maximum frequency of 20 MHz with a supply voltage range of 1.8V to 5.5V. The device includes a 10-bit ADC with up to 16 channels, multiple communication interfaces including USART, SPI, and TWI, and supports extended temperature operation from -40°C to +125°C.

Microcontrollers Feature Summary

• Supports vertical migration within the megaAVR 0-series family without code modification due to pin and feature compatibility.
• Integrates an Event System for core-independent inter-peripheral signaling and SleepWalking capabilities for low-power efficiency.
• Includes CRCSCAN hardware for optional automatic cyclic redundancy check scanning before code execution.

Microcontrollers Applications

• Industrial control systems requiring extended temperature stability
• Low-power embedded applications utilizing sleep modes
• Sensor interface designs using the integrated ADC and event system

Microcontrollers Procurement Notes

Verify the specific ordering suffix 'AFR' against official Microchip documentation to confirm package type (TQFP) and reel configuration. Ensure the required temperature grade matches the extended range specification. Cross-reference the datasheet revision to confirm peripheral availability and errata status prior to finalizing procurement specifications.

Microcontrollers Selection Notes

Select this component when 32 KB of program memory and 41 programmable I/O lines are required. Consider the ATMEGA3209 over the ATMEGA3208 if additional general-purpose I/O or analog channels are necessary. Verify that the 48-pin TQFP package fits the mechanical constraints and that the extended temperature rating meets environmental requirements.

Microcontrollers Part Context

This part belongs to the megaAVR 0-series, which offers horizontal and vertical migration paths across different pin counts and memory sizes. The ATMEGA3209 provides higher I/O density compared to the 32-pin variants while sharing the same core architecture and peripheral set as other devices in the series.

Microcontrollers Replacement Considerations

ATMEGA3209-AU

Microcontrollers FAQ

What is the maximum operating frequency of the ATMEGA3209?

The device features a hardware multiplier running at up to 20 MHz.

Does the ATMEGA3209 support simultaneous master and slave operations on its TWI interface?

Yes, the TWI interface can operate simultaneously as a master and slave on different pins.