AVR64DA32-I/PT

Overview

The AVR64DA32-I/PT is an 8-bit microcontroller from the AVR DA family, featuring a 32-pin TQFP package. It operates at up to 24 MHz and includes 64 KB of Flash memory, 8 KB of SRAM, and 512 B of EEPROM. Key peripherals include one 12-bit ADC with 14 channels, three analog comparators, one 10-bit DAC, three zero-cross detectors, and a Peripheral Touch Controller supporting up to 22 self-capacitance and 121 mutual capacitance channels. The device supports industrial temperature ranges (-40°C to +85°C) and offers security features such as Program and Debug Interface Disable (PDID).

Feature Summary

• Integrates a Peripheral Touch Controller with Driven Shield+ technology for capacitive touch applications.
• Includes intelligent analog features such as a 12-bit differential ADC and three analog comparators with window compare functions.
• Supports secure firmware upgrades through Program and Debug Interface Disable (PDID) mechanisms.
• Features an Event System for CPU-independent inter-peripheral signaling to reduce processor load.

Applications

• Capacitive touch interface designs using buttons, sliders, or wheels.
• Power control systems utilizing the 12-bit Timer/Counter type D.
• Secure embedded applications requiring protected bootloader environments.
• Industrial monitoring devices leveraging analog comparators and zero-cross detectors.

Procurement Notes

Verify the specific ordering suffix to confirm package style and temperature range. Ensure the PDID feature is enabled only if security locking is required, as it restricts UPDI access. Confirm that the 32-pin TQFP package meets your PCB layout requirements. Check for any automotive variants if extended temperature ranges are needed.

Selection Notes

Select this model when 64 KB of Flash and 8 KB of SRAM are sufficient for the application. Choose the 32-pin variant if fewer I/O pins are needed compared to the 48 or 64-pin options. Consider the AVR64DA28 if pin count reduction is possible without losing critical peripherals. Verify compatibility with existing AVR codebases due to vertical migration support.

Part Context

This component belongs to the AVR DA(S) family, which utilizes the latest Microchip technologies for low-power and flexible architectures. The family allows vertical migration between different Flash sizes without code modification. The AVR64DA32 sits between the 32 KB and 128 KB Flash variants in terms of memory capacity while sharing similar peripheral sets with other 32-pin devices in the series.

Replacement Considerations

AVR64DA28-I/PT: Offers identical functionality with reduced Flash and SRAM size. AVR64DA48-I/PT: Provides increased I/O pins and additional peripherals in a larger package. AVR32DA32-I/PT: A lower-memory alternative within the same pin-compatible footprint.