CAT1021WI-25-A2

Supervisors Overview

The CAT1021WI-25-A2 is a supervisory circuit manufactured by onsemi, designed for microcontroller-based systems. It integrates a 2-kbit I2C serial EEPROM with voltage monitoring capabilities. The device features a manual reset input and a watchdog timer to ensure system reliability. It operates within a supply voltage range of 2.7 V to 5.5 V, with a specific threshold voltage of 2.55 V for the monitored input. The component is housed in an 8-SOIC surface-mount package and supports an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates 2-kbit I2C serial EEPROM with supervisory functions
• Includes manual reset input and watchdog timer for system protection
• Monitors single voltage input with defined threshold levels

Supervisors Applications

• Microcontroller-based system supervision
• Embedded memory storage with power monitoring
• Industrial control circuits requiring reset management

Supervisors Procurement Notes

Verify component authenticity through authorized channels due to obsolete status. Confirm package integrity and pin compatibility during integration. Review datasheet specifications for electrical limits before deployment. Ensure supply chain stability as availability may be limited. Validate RoHS compliance documentation for regulatory adherence.

Supervisors Selection Notes

Select this component when combined EEPROM and voltage supervision are required in a single package. Consider the I2C interface compatibility with existing bus architectures. Evaluate the 8-SOIC footprint against board space constraints. Assess thermal performance within the specified operating temperature range. Verify that the 2.55 V threshold aligns with target system voltage requirements.

Supervisors Part Context

This part belongs to the CAT1021 series, which provides complete memory and supervisory solutions. The series includes variants like CAT1022 and CAT1023 with different capacities or interfaces. The WI suffix indicates the SOIC-8 package variant. The 25 designation refers to the specific voltage threshold version within the family.

Supervisors Replacement Considerations

Public confirmed substitute part numbers: None identified in provided documentation.