AVR128DA28-E/SO

Overview

The AVR128DA28-E/SO is a microcontroller from the AVR DA family, featuring an AVR CPU with hardware multiplier running at up to 24 MHz. It includes 128 KB of Flash memory, 16 KB of SRAM, and 512B of EEPROM. The device operates within an extended temperature range of -40°C to +125°C and is housed in a 28-pin SOIC package. Key peripherals include one 16-bit TCA, three 16-bit TCBs, one 12-bit TCD, one RTC, three USARTs, two SPIs, one TWI/I2C, a 12-bit ADC with 10 channels, one DAC, three analog comparators, one ZCD, and a Peripheral Touch Controller with 18 self-capacitance and 81 mutual capacitance channels.

Feature Summary

• Supports vertical migration without code modification across the AVR DA family due to full pin and feature compatibility.
• Integrates a Peripheral Touch Controller (PTC) with Driven Shield+ and Boost Mode technologies for capacitive touch applications.
• Features a single-pin Unified Program and Debug Interface (UPDI) for simplified programming and debugging.
• Includes configurable custom logic with programmable Look-up Tables (LUTs) for independent peripheral signaling via the Event System.

Applications

• Capacitive touch interface designs using buttons, sliders, wheels, or 2D surfaces
• Power control systems utilizing the optimized 12-bit Timer/Counter type D
• Industrial monitoring requiring extended temperature operation (-40°C to +125°C)
• Low-power embedded systems leveraging multiple sleep modes and auto-tuning oscillators

Procurement Notes

Verify the ordering suffix 'E' confirms the extended temperature range specification of -40°C to +125°C. Confirm the 'SO' suffix indicates the SOIC package style. Ensure the part number matches the specific 28-pin variant within the AVR128DA series. Cross-reference the datasheet revision DS40002183B for accurate electrical characteristics and timing diagrams before finalizing procurement specifications.

Selection Notes

Select this component when 128 KB of Flash and 16 KB of SRAM are required alongside a 28-pin form factor. Choose the extended temperature grade ('-E') for environments exceeding standard industrial limits. Consider the Peripheral Touch Controller capabilities if capacitive sensing is needed. Verify that the available I/O pins and peripheral counts meet the system requirements compared to other pin-count variants in the DA family.

Part Context

This device belongs to the AVR DA family, which offers horizontal and vertical migration paths. The AVR128DA28 shares architectural similarities with higher pin-count variants like the AVR128DA48 and AVR128DA64, allowing for design scalability. It utilizes the same AVR CPU core and peripheral set, differing primarily in pin count and associated peripheral availability.

Replacement Considerations

AVR128DA28-I/SO

FAQ

What is the maximum operating frequency of the AVR128DA28-E/SO?

The AVR CPU runs at up to 24 MHz.

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

There are 23 general-purpose I/O pins available.

Does the device support simultaneous master and slave operation on TWI/I2C?

Yes, the TWI/I2C can operate simultaneously as master and slave on different pins.