AVR128DA28T-I/SS

Overview

The AVR128DA28T-I/SS is an 8-bit microcontroller from the AVR DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB of Flash memory, 16 KB of SRAM, and 512 B of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. Key peripherals include a 12-bit ADC, 10-bit DAC, three analog comparators, and a Peripheral Touch Controller. It utilizes a single-pin UPDI interface for programming and debugging.

Feature Summary

• Supports multi-voltage I/O (MVIO) for direct communication across different power domains without external level shifters.
• Integrates intelligent analog features including a 12-bit differential ADC, 10-bit DAC, and zero-cross detectors for power control applications.
• Features a flexible Event System and Configurable Custom Logic (CCL) to reduce system latency and enable CPU-independent peripheral signaling.

Applications

• Industrial control systems requiring real-time processing and noise immunity.
• Smart home appliances utilizing capacitive touch interfaces via the PTC.
• IoT devices needing low-power operation with multiple sleep modes.
• Motor control applications leveraging the TCD timer and ZCD peripherals.

Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape and reel packaging as specified in the datasheet. Confirm the 'I' suffix indicates the industrial temperature range (-40°C to +85°C). Ensure the 'SS' suffix matches the SSOP-28 package requirement. Cross-reference the full part number against the manufacturer's current availability status before finalizing procurement orders.

Selection Notes

Select this component when 128 KB of program memory and 16 KB of RAM are required within a compact 28-pin footprint. It is suitable for designs needing vertical migration within the AVR DA family without code modification. Consider this MCU if specific analog peripherals like the Peripheral Touch Controller or Zero-Cross Detectors are necessary for the application.

Part Context

This device belongs to the AVR DA family, which shares pin and feature compatibility across varying flash sizes and pin counts. It represents a next-generation architecture compared to older AVR series, offering enhanced peripheral sets and improved performance at comparable clock speeds. The family supports seamless horizontal and vertical migration for scalable product development.

Replacement Considerations

AVR128DA28T-E/SS

FAQ

What is the maximum operating frequency of the AVR128DA28T-I/SS?

The device runs at up to 24 MHz using the high-precision internal oscillator.

Does this microcontroller support capacitive touch sensing?

Yes, it includes a Peripheral Touch Controller (PTC) supporting driven shield and boost mode technologies for buttons, sliders, and wheels.

How many general-purpose I/O pins are available on the 28-pin variant?

The AVR128DA28 provides up to 23 programmable general-purpose I/O pins.