AVR64DA32S-E/QZB

Overview

The AVR64DA32S-E/QZB is an 8-bit microcontroller from Microchip Technology, part of the AVR DA series. It features a 64 kB Flash program memory and 8 kB SRAM data RAM. The device operates at a maximum clock frequency of 24 MHz with a supply voltage range of 1.8 V to 5.5 V. It includes a 12-bit ADC, three comparators, a Programmable Touch Controller (PTC), three Zero-Crossing Detectors (ZCD), and a DAC. Communication interfaces include six UARTs, two SPIs, and TWI. The component is housed in a 32-pin QFN package.

Feature Summary

• Supports multi-voltage operation across the entire power supply range for flexible system design.
• Integrates specialized peripherals including programmable touch sensing and zero-crossing detection for industrial applications.
• Provides extensive connectivity through multiple serial communication interfaces including UART, SPI, and TWI.

Applications

• Industrial control systems requiring real-time processing
• Home appliance controllers with multi-voltage requirements
• Internet of Things (IoT) devices needing low-power operation

Procurement Notes

Verify the specific suffix 'E' indicates extended temperature range specifications compared to standard variants. Confirm the 'QZB' package designation matches the required 32-pin QFN footprint for PCB layout compatibility. Ensure RoHS compliance documentation is available for regulatory adherence. Cross-reference the datasheet revision date to confirm peripheral availability and errata status before finalizing procurement.

Selection Notes

Select this model when 64 kB of non-volatile memory and 8 kB of RAM are sufficient for application logic. Choose the 32-pin QFN package if board space is limited but more I/O than 28-pin options are needed. Consider this part for designs requiring integrated touch sensing or zero-crossing detection without external components. Verify that the 24 MHz performance meets the timing constraints of the target application.

Part Context

This component belongs to the AVR64DA family, which shares core architecture with other pin-compatible variants like the AVR64DA28 and AVR64DA48. The DA series represents Microchip's modern 8-bit MCU line, focusing on high integration and low power consumption. It serves as a successor to older AVR families, offering enhanced peripheral sets and improved security features while maintaining software compatibility.

Replacement Considerations

AVR64DA32T-I/PT offers identical electrical specifications but uses a TQFP-32 package instead of QFN. AVR64DA32S-E/QZB is the factory-programmable variant; verify if pre-programmed firmware is required versus blank units. Check if the 'I' grade temperature range is acceptable if 'E' grade is unavailable.