AVR128DA48ST-E/PT

Overview

The AVR128DA48ST-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 Flash, 16 KB SRAM, and 512 B EEPROM. The device offers 48 pins in a TQFP package (suffix PT), extended temperature range (-40°C to +125°C, suffix E), and tape & reel packaging (suffix T). Key peripherals include a 12-bit ADC with 18 channels, three analog comparators, three zero-cross detectors, a 10-bit DAC, Peripheral Touch Controller (PTC), and Configurable Custom Logic (CCL).

Feature Summary

• Features Program and Debug Interface Disable (PDID) for secure firmware protection against unauthorized access.
• Includes intelligent analog features such as a 12-bit differential ADC, analog comparators, and zero-cross detectors.
• Supports capacitive touch applications via the Peripheral Touch Controller (PTC) with driven shield technology.
• Provides flexible inter-peripheral signaling through the Event System and Configurable Custom Logic (CCL).

Applications

• Secure firmware upgrade implementations requiring code authentication.
• Industrial control systems operating in extended temperature environments.
• Applications utilizing capacitive touch interfaces like buttons or sliders.
• Power control circuits utilizing zero-cross detection and timer counters.

Procurement Notes

Verify the ordering suffixes match specific requirements: 'S' indicates PDID support, 'T' denotes tape and reel packaging, and 'E' specifies the extended temperature range. Confirm the package style 'PT' corresponds to the TQFP form factor. Ensure compatibility with existing designs by checking pin and feature compatibility within the AVR DA(S) family for vertical migration without code modification.

Selection Notes

Select this component when extended temperature operation up to 125°C is required alongside high peripheral density. The inclusion of PDID makes it suitable for security-conscious designs. Compare channel counts and I/O availability against other pin counts in the AVR128DA series to ensure optimal resource utilization for the specific application constraints.

Part Context

This part belongs to the AVR128DA28/32/48/64(S) family, which shares a common architecture and memory structure. Devices in this family are fully pin and feature compatible for vertical migration. The AVR128DA48 variant specifically provides 48 pins and 18 ADC channels, balancing peripheral count with package size for compact designs.

Replacement Considerations

Other devices in the AVR128DA28/32/48/64(S) family offer vertical migration with identical code compatibility. Variants with different pin counts may require schematic changes but maintain architectural consistency. Ensure substitute parts match the required temperature grade and packaging type if supply chain adjustments are necessary.