AVR32DA32ST-I/PT

Overview

The AVR32DA32-I/PT is an 8-bit microcontroller from Microchip Technology, featuring the AVR core. It integrates 32 kB of Flash program memory and 4 kB of SRAM data RAM within a TQFP-32 package. The device operates at a maximum clock frequency of 24 MHz with a supply voltage range of 1.8 V to 5.5 V. Key peripherals include a 12-bit ADC, 10-bit DAC, three comparators, a PTC, three zero-crossing detectors, six UARTs, two SPI interfaces, and TWI. It provides 27 I/O pins and supports operating temperatures from -40°C to +85°C.

Feature Summary

• Integrates high-resolution analog peripherals including a 12-bit ADC and 10-bit DAC for precise signal processing.
• Includes multiple communication interfaces such as six UARTs and two SPI controllers for versatile connectivity.
• Features dedicated hardware blocks like three comparators and zero-crossing detectors for control applications.

Applications

• Industrial sensor nodes requiring multi-interface connectivity
• Motor control systems utilizing zero-crossing detection
• Data acquisition systems using high-resolution analog inputs

Procurement Notes

Verify the exact part number against official Microchip documentation, as suffixes indicate specific packaging or temperature grades. Confirm availability through authorized distributors and check for any recent product change notices or errata sheets relevant to the manufacturing lot. Ensure compatibility with your board design regarding pinout and voltage levels before procurement.

Selection Notes

Select this component when an 8-bit AVR MCU with extensive analog and serial peripheral counts is required. The TQFP-32 package offers a balance of I/O density and footprint. Consider the 24 MHz performance and 1.8V to 5.5V operating range for flexible power supply designs in industrial or consumer environments.

Part Context

This device belongs to the AVR32DA series, designed for cost-sensitive applications needing robust peripheral integration. It shares architectural similarities with other AVR32 DA parts but distinguishes itself through its specific pin count and peripheral mix in the 32-pin form factor, targeting embedded control tasks.

Replacement Considerations

Check for direct pin-compatible alternatives within the AVR32DA family, such as the AVR32DA28 or AVR32DA48, depending on I/O requirements. Verify that substitute parts maintain the same Flash/RAM size and peripheral set to ensure software compatibility without major redesign.