X5329S8I-4.5A

Supervisors Overview

The X5329S8I-4.5A is a CPU supervisory circuit integrating a 32Kbit SPI EEPROM, manufactured by Renesas Electronics Corporation (formerly Intersil). It operates within a 4.5V to 5.5V supply range and features a 4.5V reset threshold voltage. The device provides power-on reset, low VCC detection, and watchdog timer functions in an 8-lead SOIC package. It includes Block Lock protection for the EEPROM array and supports 2MHz SPI interface modes.

Supervisors Feature Summary

• Integrates CPU supervisor with power-on reset, low voltage detection, and watchdog timer alongside 32Kbit serial EEPROM memory.
• Features built-in inadvertent write protection with Block Lock capability to protect specific or all EEPROM pages.
• Supports reprogramming of the low VCC reset threshold voltage via a special programming sequence for custom precision requirements.

Supervisors Applications

• Microcontroller system supervision requiring integrated non-volatile data storage
• Applications needing programmable reset thresholds for precise voltage monitoring
• Systems utilizing SPI interface for EEPROM configuration and data retention

Supervisors Procurement Notes

Verify component status as this part may be obsolete or discontinued. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing design specifications regarding voltage thresholds and package type before procurement. Check for alternative replacement parts if new production is required.

Supervisors Selection Notes

Select this component when a combined solution for system supervision and data storage is required. It is suitable for designs operating strictly within the 4.5V to 5.5V range. Consider the need for programmable reset thresholds and the integration of EEPROM functionality to reduce board space and component count compared to discrete solutions.

Supervisors Part Context

This component belongs to the X5329 series of CPU supervisors with integrated EEPROM. It combines power management supervision functions with non-volatile memory, offering a compact solution for embedded systems. The series is designed to lower system costs and increase reliability by integrating multiple critical functions into a single package.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Renesas resources for current obsolescence notices and recommended replacements.