AVR64DD28T-E/STX

Overview

The AVR64DD28T-E/STX is an 8-bit microcontroller from the AVR DD family, featuring a hardware multiplier and operating at clock speeds up to 24 MHz. It includes 64 KB of Flash memory, 8 KB of SRAM, and 256 bytes of EEPROM. The device utilizes a VQFN-28 package with Multi-Voltage I/O (MVIO) capabilities on PORTC. Key peripherals include a 12-bit differential ADC, a 10-bit DAC, two USARTs, SPI, TWI/I2C, and a Zero-Cross Detector. It supports industrial (-40°C to +85°C) and extended (-40°C to +125°C) temperature ranges.

Feature Summary

• Features a flexible low-power architecture with intelligent analog subsystems and advanced digital peripherals.
• Includes an Event System for CPU-independent inter-peripheral signaling and Configurable Custom Logic (CCL).
• Supports simultaneous host and client operation modes via the Two-Wire Interface (TWI).
• Provides selectable input voltage thresholds through Multi-Voltage I/O (MVIO) functionality.

Applications

• Industrial control systems requiring robust peripheral integration
• Smart sensor nodes utilizing low-power architectures
• Power control applications leveraging optimized PWM timers
• Secondary safety monitoring equipment

Procurement Notes

Verify the specific ordering suffix 'E' confirms the extended temperature range (-40°C to +125°C) rather than the standard industrial rating. Confirm that the 'T' suffix indicates tape and reel packaging, which differs from tube or tray configurations. Ensure compatibility with the UPDI programming interface requirements for your development environment.

Selection Notes

Select this component when vertical migration within the AVR DD family is required without code modification. Consider the 28-pin VQFN package constraints regarding available GPIO pins compared to larger pin-count variants. Evaluate the need for the extended temperature range if operating conditions exceed standard industrial limits.

Part Context

This part belongs to the AVR64DD32/28 series within the broader AVR DD family. It shares architectural similarities with other devices in the family, allowing for horizontal migration to reduce pin counts or vertical migration to increase features while maintaining software compatibility.

Replacement Considerations

AVR64DD28-I/STX offers identical specifications but operates within the industrial temperature range (-40°C to +85°C) instead of the extended range.

FAQ

Does the AVR64DD28T-E/STX support simultaneous host and client operations?

Yes, the integrated Two-Wire Interface (TWI) supports dual address matching and can operate simultaneously as both a host and a client on different pins.

What is the function of the MVIO feature on this microcontroller?

Multi-Voltage I/O (MVIO) allows PORTC pins to have selectable input voltage thresholds, enabling compatibility with different logic voltage levels.