AVR64DA32ST-E/QZB

Overview

The AVR64DA32ST-E/QZB is an 8-bit microcontroller from the AVR DA(S) family, featuring a 32-pin VQFN package. It integrates 64 KB of Flash memory, 8 KB of SRAM, and 512 B of EEPROM. The device operates at a maximum frequency of 24 MHz with a supply voltage range of 1.8 V to 5.5 V. Key peripherals include a 12-bit ADC, three analog comparators, a 10-bit DAC, and a Peripheral Touch Controller (PTC). It supports industrial temperature ranges (-40°C to +85°C) and includes Program and Debug Interface Disable (PDID) for security.

Feature Summary

• Integrates a Peripheral Touch Controller (PTC) with Driven Shield+ technology for capacitive touch sensing applications.
• Features Program and Debug Interface Disable (PDID) to prevent unauthorized access to reprogrammable Flash memory via UPDI.
• Includes Configurable Custom Logic (CCL) with programmable Look-up Tables for hardware-based logic implementation.
• Supports dual-mode Two-Wire Interface (TWI) operation as both host and client simultaneously.

Applications

• Capacitive touch interface designs using buttons, sliders, or wheels.
• Secure firmware upgrade implementations requiring code protection.
• Industrial control systems operating in extended temperature environments.
• Low-power sensor nodes utilizing event-driven peripheral signaling.

Procurement Notes

Verify that the ordering suffix QZB corresponds to the specific VQFN package variant and automotive or extended grade requirements. Confirm PDID availability if security features are mandatory for the design. Ensure compatibility with existing AVR DA family pinouts for migration purposes. Check datasheet DS40002233 for exact electrical characteristics and thermal specifications.

Selection Notes

Select this component when 64 KB of Flash and 8 KB of SRAM are required within a compact 32-pin footprint. Choose the E-temperature grade for applications exceeding standard industrial limits. Consider the PTC feature if capacitive sensing is needed without external controllers. Verify that the 24 MHz clock speed meets real-time processing requirements.

Part Context

This part belongs to the AVR DA(S) family, which offers vertical migration compatibility across 28, 32, 48, and 64-pin devices. It shares architectural similarities with AVR EA and DB families but provides enhanced analog peripherals and higher performance. The DA series emphasizes low-power operation and advanced digital peripherals like CCL and Event System.

Replacement Considerations

AVR64DA32S-E/PT

FAQ

What is the function of the PDID feature in this microcontroller?

PDID prevents access to the device's reprogrammable Flash memory over the Unified Program and Debug Interface (UPDI), protecting against remote attacks and unauthorized code modification.

Does the AVR64DA32ST-E/QZB support simultaneous TWI host and client operations?

Yes, the device includes a dual-mode TWI interface that can operate independently as both a host and a client on different pins.