AVR32DA28T-E/SO

Overview

The AVR32DA28T-E/SO is an 8-bit microcontroller from the AVR DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 32 KB Flash, 4 KB SRAM, and 512 B EEPROM in a 28-pin SOIC package. Key peripherals include a 12-bit ADC, 10-bit DAC, three analog comparators, two zero-cross detectors, and a Peripheral Touch Controller. Operating voltage ranges from 1.8 V to 5.5 V, with an extended temperature range of -40°C to +125°C.

Feature Summary

• Supports vertical migration without code modification across the AVR DA(S) family due to full pin and feature compatibility.
• Integrates intelligent analog features including a 12-bit differential ADC with programmable gain amplifier and a 10-bit DAC.
• Provides advanced digital peripherals such as Configurable Custom Logic (CCL) and an Event System for CPU-independent signaling.
• Includes a Peripheral Touch Controller (PTC) with Driven Shield+ technology for capacitive touch applications.

Applications

• Industrial control systems requiring robust I/O and analog precision
• Smart home appliances utilizing capacitive touch interfaces
• Power monitoring devices leveraging zero-cross detection capabilities
• General-purpose embedded controllers needing low-power operation

Procurement Notes

Verify the ordering suffix 'E' confirms the extended temperature range (-40°C to +125°C) and 'SO' indicates the SOIC package style. Confirm 'T' denotes tape and reel packaging. Ensure the specific part number matches the required memory size and peripheral count for your design constraints before finalizing procurement.

Selection Notes

Select this component when an 8-bit AVR architecture with high-performance analog peripherals is required. The AVR32DA series offers vertical scalability within the DA family, allowing future upgrades to higher memory variants without redesigning the PCB layout. Consider the extended temperature rating if operating in harsh environments.

Part Context

This device belongs to the AVR DA(S) family, which combines the proven AVR CPU with modern peripheral sets. It shares architectural similarities with other DA series members but is distinguished by its 32 KB Flash capacity and 28-pin form factor. The family emphasizes flexibility through event-driven architectures and comprehensive analog integration.

Replacement Considerations

AVR32DA28I/SO: Identical specifications except for industrial temperature range (-40°C to +85°C).

FAQ

Does the AVR32DA28T-E/SO support Program and Debug Interface Disable (PDID)?

No, PDID is available only for AVR DAS devices. This standard AVR32DA variant does not include this security feature.

What is the maximum clock frequency of the AVR32DA28T-E/SO?

The internal high-frequency oscillator can run at up to 24 MHz.

How many General Purpose I/O pins are available on the 28-pin version?

The AVR32DA28 provides up to 23 programmable I/O pins.