AVR64DA28T-I/SS

Overview

The AVR64DA28T-I/SS is an 8-bit microcontroller from the AVR DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 64 KB of Flash memory, 8 KB of SRAM, and 512 B of EEPROM. The device provides up to 23 programmable I/O pins in a 28-pin SSOP package. Key peripherals include a 12-bit ADC with 10 channels, a 10-bit DAC, three analog comparators, and three zero-cross detectors. It supports UPDI for programming and debugging.

Feature Summary

• Integrates a Peripheral Touch Controller (PTC) supporting self-capacitance and mutual capacitance sensing for touch applications.
• Includes Configurable Custom Logic (CCL) utilizing Look-Up Tables for flexible digital logic implementation without CPU intervention.
• Features an Event System enabling direct peripheral-to-peripheral signaling to reduce CPU overhead and improve timing predictability.

Applications

• Capacitive touch interface designs using buttons, sliders, or wheels
• Power control systems requiring zero-cross detection and timer optimization
• Industrial monitoring utilizing analog comparators and event-driven processing

Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape and reel packaging as specified in the datasheet designation table. Confirm the 'I' suffix indicates the industrial temperature range of -40°C to +85°C. Ensure the 'SS' suffix matches the required SSOP-28 package type for your PCB layout.

Selection Notes

Select this component when vertical migration within the AVR DA(S) family is required without code modification. Choose this part if specific pin counts limit the use of larger packages but advanced features like PTC and CCL are necessary. Consider the extended temperature variant if operation beyond 85°C is required.

Part Context

This device belongs to the AVR64DA28/32/48/64(S) series, which shares architectural compatibility across pin counts. The AVR64DA28 represents the 28-pin entry point for the 64 KB Flash tier, offering a balance between peripheral density and physical footprint compared to the 32, 48, and 64-pin variants.

Replacement Considerations

AVR64DA28-I/SO (SOIC package), AVR64DA28-I/SS (Tube packaging), AVR64DA28-E/SS (Extended temperature).