AVR128DA28T-E/SO

Overview

The AVR128DA28T-E/SO 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 an extended temperature range of -40°C to +125°C. It provides 23 general-purpose I/O pins in a 28-pin SOIC package. Key peripherals include a 12-bit differential ADC, a 10-bit DAC, three analog comparators, and a Peripheral Touch Controller.

Feature Summary

• Features intelligent analog capabilities including a 12-bit differential ADC, 10-bit DAC, and three analog comparators with window compare functions.
• Supports capacitive touch applications via the Peripheral Touch Controller (PTC) utilizing Driven Shield+ and Boost Mode technologies.
• Enables CPU-independent inter-peripheral signaling through the Event System and Configurable Custom Logic (CCL).
• Provides flexible clock options including a high-precision internal oscillator with auto-tuning and an ultra-low-power 32.768 kHz oscillator.

Applications

• Industrial control systems requiring robust peripheral integration and low-power operation.
• Smart home devices utilizing capacitive touch interfaces for user interaction.
• Power control applications leveraging the optimized 12-bit Timer/Counter type D (TCD).
• Battery-powered equipment benefiting from multiple sleep modes and efficient power management.

Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape and reel packaging and 'SO' indicates the SOIC package style. Confirm the '-E' suffix denotes the extended industrial temperature range (-40°C to +125°C). Ensure compatibility with the 28-pin pinout when designing printed circuit boards. Cross-reference the datasheet revision DS40002183B for accurate electrical specifications.

Selection Notes

Select this component when 128 KB of program memory and 16 KB of data RAM are required in a compact 28-pin form factor. Choose the extended temperature grade for environments exceeding standard industrial limits. Consider the availability of specific peripherals like the Peripheral Touch Controller or multiple USARTs if communication and sensing features are critical to the design requirements.

Part Context

This device belongs to the AVR® DA family, which offers vertical migration without code modification across different pin counts and memory sizes. It shares architectural similarities with other AVR MCUs but introduces advanced digital peripherals and event-driven architectures. The family supports horizontal migration to reduce pin counts while maintaining core functionality.

Replacement Considerations

AVR128DA28-I/SO