AVR128DA64S-E/PT

Overview

The AVR128DA64S-E/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 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 up to 55 programmable I/O pins in a TQFP-64 package. Key peripherals include a 12-bit ADC, three analog comparators, three zero-cross detectors, and a Peripheral Touch Controller.

Feature Summary

• Includes Program and Debug Interface Disable (PDID) for secure firmware protection against unauthorized access.
• Features intelligent analog capabilities such as a 12-bit differential ADC, analog comparators, and zero-cross detectors.
• Supports capacitive touch sensing via the Peripheral Touch Controller with driven shield technology.
• Utilizes an Event System for predictable inter-peripheral signaling independent of the CPU.

Applications

• Secure firmware upgrade implementations requiring code authentication
• Industrial sensor nodes with analog signal conditioning
• Power control systems utilizing zero-cross detection
• Consumer devices requiring capacitive touch interfaces

Procurement Notes

Verify that the ordering suffix 'S' confirms the inclusion of the PDID security feature. Ensure the '-E' suffix matches the required extended temperature operating range of -40°C to +125°C. Confirm the '/PT' designation corresponds to the TQFP-64 surface-mount package. Cross-reference the datasheet revision DS40002183E for accurate electrical specifications.

Selection Notes

Select this component when enhanced security features are mandatory for the application. The PDID function prevents external reprogramming once activated. Choose this model over non-S variants if firmware integrity protection is required. Verify that the 55 available I/O pins meet the interface requirements for the target design.

Part Context

This device belongs to the AVR128DA28/32/48/64(S) series, which offers vertical migration compatibility without code modification. The 'S' variant specifically integrates the Program and Debug Interface Disable feature. It shares architectural similarities with other AVR DA family members but distinguishes itself through its specific security configuration and pin count.

Replacement Considerations

AVR128DA64-I/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 protects the Flash memory from unauthorized modifications via the UPDI interface.

How does the PDID feature affect device programming?

Once PDID is activated, the UPDI cannot erase or reprogram the Flash memory. Updates must be performed using software stored in the Boot Code section, which can verify the authenticity of new application code.

What is the maximum operating frequency of the AVR128DA64S-E/PT?

The internal high-frequency oscillator (OSCHF) can be selected to run the CPU at frequencies up to 24 MHz.