AVR128DA48ST-I/PT

Overview

The AVR128DA48ST-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 operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperatures (-40°C to +85°C). It utilizes a TQFP package and incorporates Program and Debug Interface Disable (PDID) for security.

Feature Summary

• Includes Program and Debug Interface Disable (PDID) to prevent unauthorized access to reprogrammable Flash memory over UPDI after activation.
• Features a Peripheral Touch Controller (PTC) supporting up to 46 self-capacitance and 529 mutual capacitance channels for touch interfaces.
• Integrates intelligent analog peripherals including a 12-bit differential ADC, three analog comparators, and a 10-bit DAC.

Applications

• Secure firmware upgrade implementations requiring code authentication
• Capacitive touch control panels and user interfaces
• Power control systems utilizing optimized timer peripherals

Procurement Notes

Verify that the ordering suffix 'S' confirms the inclusion of the PDID feature, as standard variants lack this capability. Ensure the 'T' suffix indicates tape and reel packaging if required for automated assembly. Confirm the 'I' suffix matches the intended industrial temperature operating range.

Selection Notes

Select this variant specifically when secure boot or anti-tampering features are mandatory due to the integrated PDID. Compare pin counts against the AVR128DA28 or AVR128DA32 if fewer I/Os suffice. Consider the AVR128DA64 if additional peripheral channels or I/O pins are necessary for the design.

Part Context

This component belongs to the AVR128DA28/32/48/64(S) series, which offers vertical migration without code modification across the family. The 'S' designation distinguishes it from standard devices by adding the PDID security mechanism. It shares the same core architecture and memory sizes as other 128 KB flash members in the DA family.

Replacement Considerations

AVR128DA48-S/PT

FAQ

What is the function of the PDID feature?

PDID prevents access to the device's reprogrammable Flash memory over the Unified Program and Debug Interface (UPDI), protecting against remote attacks and PCB-level modifications.

How does the 'S' suffix affect the device capabilities?

The 'S' suffix indicates the presence of the Program and Debug Interface Disable (PDID) feature, which is not available in standard AVR128DA48 devices.

What touch sensing capabilities are included?

The device includes a Peripheral Touch Controller (PTC) capable of handling up to 46 self-capacitance and 529 mutual capacitance channels.