AVR128DA64ST-I/PT

Overview

The AVR128DA64ST-I/PT is an 8-bit microcontroller from the AVR® DA(S) 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 offers up to 55 programmable I/O pins in a 64-pin TQFP package. Key peripherals include a 12-bit ADC with 22 channels, three analog comparators, three zero-cross detectors, a 10-bit DAC, and a Peripheral Touch Controller (PTC). It supports industrial temperature range (-40°C to +85°C) and operates within a supply voltage range of 1.8V to 5.5V.

Feature Summary

• Integrated Program and Debug Interface Disable (PDID) for secure firmware upgrades and authentication
• Advanced analog features including a 12-bit differential ADC, three analog comparators, and three zero-cross detectors
• Peripheral Touch Controller (PTC) supporting capacitive touch buttons, sliders, wheels, and 2D surfaces
• Flexible event system enabling CPU-independent inter-peripheral signaling

Applications

• Secure firmware upgrade implementations requiring code protection
• Capacitive touch interface designs using PTC technology
• Power control applications utilizing optimized Timer/Counter type D
• Industrial monitoring systems requiring high-precision analog signal acquisition

Procurement Notes

Verify that the ordering suffix 'S' confirms the inclusion of the PDID security feature. Ensure the 'T' suffix matches the required tape and reel packaging format. Confirm the 'I' designation aligns with the specified industrial temperature operating range requirements for your application environment.

Selection Notes

Select this component when both 128 KB program memory and advanced security features are necessary. The device is suitable for designs requiring extensive analog input channels and capacitive touch capabilities. Consider the 64-pin package constraints and verify that the peripheral count meets the specific system interface requirements.

Part Context

This part belongs to the AVR® DA(S) family, which provides vertical migration compatibility without code modification across different pin counts and memory sizes. The device shares architectural similarities with other AVR DA series members but is distinguished by its specific memory configuration and integrated security mechanisms.

Replacement Considerations

AVR128DA64-E/PT

FAQ

What is the function of the 'S' suffix in the part number?

The 'S' suffix indicates that the device includes the Program and Debug Interface Disable (PDID) feature, which prevents unauthorized access to the reprogrammable Flash memory over the UPDI.

How does the PDID feature affect device programming?

Once activated, PDID prevents changes to the device via the UPDI. Programming can only be performed using software stored in the Boot Code section to update the Application Code section.

What analog peripherals are included in this microcontroller?

The device includes one 12-bit differential ADC with 22 channels, three analog comparators with window compare functions, one 10-bit DAC, and three zero-cross detectors.