AVR64DA64ST-I/PT

Overview

The AVR64DA64ST-I/PT is an 8-bit microcontroller from the AVR DA series, manufactured by Microchip Technology. It features a 24 MHz maximum clock frequency and utilizes the AVR core architecture. The device includes 64 kB of Flash program memory and 8 kB of SRAM data memory. It offers 55 programmable I/O pins within a TQFP-64 package. Key analog peripherals include a 12-bit ADC with 22 channels, a 10-bit DAC, three zero-crossing detectors, and three comparators. Communication interfaces consist of six USARTs, two SPI modules, and TWI support.

Feature Summary

• Integrates Core Independent Peripherals (CIP) for efficient real-time control tasks without excessive CPU intervention.
• Provides high-precision analog capabilities through a 12-bit ADC and dedicated zero-crossing detection hardware.
• Supports capacitive touch sensing functionality via integrated PTC (Peripheral Touch Controller) resources.
• Combines smart analog blocks with standard digital interfaces to reduce external component count in designs.

Applications

• Smart metering and utility monitoring systems requiring precise voltage and current measurement.
• Industrial automation controllers utilizing multiple serial communication protocols.
• Motor control applications leveraging zero-crossing detection for AC synchronization.
• Consumer appliances integrating capacitive touch user interfaces.

Procurement Notes

Verify the specific suffix 'ST' against official Microchip documentation to confirm tape-and-reel packaging specifications. Ensure the industrial temperature grade (-40°C to +85°C) aligns with your environmental requirements. Cross-reference the datasheet revision to confirm pinout compatibility with existing PCB layouts. Confirm RoHS compliance status through the manufacturer's official certification records prior to final procurement approval.

Selection Notes

Select this component when a balance of high I/O count and advanced analog features is required in a compact 64-pin form factor. The AVR DA series is suitable for applications needing multiple UARTs and high-resolution ADCs. Consider the 24 MHz performance limit for timing-critical code execution. Evaluate the 1.8 V to 5.5 V operating voltage range against system power rails. Compare memory sizes with other AVR DA variants if cost optimization is necessary.

Part Context

This part belongs to the AVR DA family, which emphasizes low-power performance and integrated smart analog features. The series targets applications demanding high peripheral density without increasing package size. It complements the AVR DB series by offering specific interface configurations like multiple USARTs. The AVR DA line supports both standalone processing and companion MCU roles in complex systems.

Replacement Considerations

Direct substitutes within the same package and pinout include other AVR64DA64 variants with different suffixes indicating packaging or temperature grades. Verify electrical characteristics and peripheral availability when considering cross-series replacements like the AVR64DB64. Consult Microchip's official change notification documents for any functional updates or obsolescence warnings before switching components.