AVR32DU28-I/STX

Overview

The AVR32DU28-I/STX is an 8-bit microcontroller from the AVR DU family, featuring a 32 KB Flash memory and 4 KB SRAM. It operates at clock speeds up to 24 MHz with a supply voltage range of 1.8 V to 5.5 V. The device includes a USB 2.0 full-speed interface, two USARTs, one SPI, and one TWI/I2C controller. It utilizes a 28-pin SSOP package and supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• AVR CPU with hardware multiplier running up to 24 MHz
• USB 2.0 full-speed device-compliant interface
• Configurable Custom Logic (CCL) with four Look-up Tables
• Program and Debug Interface Disable (PDID) for security

Applications

• USB-enabled consumer electronics
• Industrial control systems
• IoT devices requiring secure firmware updates

Procurement Notes

Verify the component against the official Microchip datasheet DS40002576A. Confirm the specific ordering suffix matches the required package style and temperature rating. Ensure the source documentation aligns with the preliminary status indicated in the reference material.

Selection Notes

Select this model for designs requiring integrated USB connectivity within a compact 28-pin footprint. The vertical migration capability allows code reuse across the AVR DU family. Consider the PDID feature if application security against unauthorized access is a priority.

Part Context

This part belongs to the AVR DU family, which shares pin and feature compatibility across different memory sizes. It complements other variants like the AVR32DU20 and AVR32DU32 by offering a balanced peripheral set in a standard surface-mount package suitable for space-constrained applications.

Replacement Considerations

AVR32DU20-I/SS

FAQ

What is the maximum operating frequency?

The AVR32DU28-I/STX runs at clock speeds up to 24 MHz.

Does the device support read-while-write operations?

Yes, it features genuine read-while-write operation in its Flash memory.