X5083S8I

Supervisors Overview

The X5083S8I is a voltage supervisory circuit manufactured by Renesas Electronics Corporation, designed for CPU supervision and watchdog timer applications. It integrates an 8K SPI EEPROM with reset functionality. The device monitors a single input with an active low output and features a 300 ms reset delay time. It operates within a supply voltage range of 2.7 V to 5.5 V and includes power-fail detection capabilities. The component supports chip enable signals and lacks manual reset or battery backup switches. It is available in an SOIC-8 surface-mount package and functions within an industrial temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates 8K serial EEPROM with SPI interface for data storage alongside supervision
• Provides hardware reset generation with configurable threshold voltages
• Includes built-in watchdog timer to prevent software lockups
• Detects power failures and asserts reset signals upon voltage deviation

Supervisors Applications

• CPU system supervision in embedded controllers
• Watchdog timer implementation for microprocessor reliability
• Data retention management via integrated SPI EEPROM
• Power-fail detection circuits in industrial systems

Supervisors Procurement Notes

Verify the specific suffix designation (e.g., Z vs IZ) as it determines the commercial or industrial temperature rating and exact threshold voltage options. Confirm current availability status, as many variants in this series are marked as obsolete or end-of-life. Ensure the selected part matches the required EEPROM capacity and package type for the target PCB design.

Supervisors Selection Notes

Select based on the required operating temperature range, distinguishing between commercial (0°C to +70°C) and industrial (-40°C to +85°C) grades. Choose the appropriate threshold voltage suffix to match the monitored rail. Verify that the SPI interface compatibility aligns with the host controller's communication protocol requirements.

Supervisors Part Context

This component belongs to the X5083 series of supervisory circuits from Renesas, formerly Intersil. These devices combine voltage monitoring with non-volatile memory storage. The series is characterized by low power consumption and compact packaging, targeting applications requiring reliable system reset and data preservation during power events.

Supervisors Replacement Considerations

Direct substitutes include other X5083 variants with adjusted suffixes for temperature or voltage thresholds. Cross-reference with X5043 or X5323 series parts if EEPROM capacity or reset timing requirements differ significantly.