CAT1023WI-28-GT3

Supervisors Overview

The CAT1023WI-28-GT3 is a supervisory circuit manufactured by onsemi, designed for CPU systems. It integrates a 2k-bit serial EEPROM with I²C interface and a voltage supervisor featuring brown-out protection. The device operates within a supply voltage range of 2.7 V to 5.5 V. It includes a watchdog timer and manual reset capability. The threshold voltage is set at 2.8 V, with an overvoltage threshold of 3 V and an undervoltage threshold of 2.85 V. It functions in temperatures from -40°C to +85°C and is housed in an SOIC-8 package.

Supervisors Feature Summary

• Integrates a 2k-bit serial EEPROM with I²C bus interface for data storage
• Provides system power supervision with brown-out protection and manual reset
• Includes a watchdog timer to monitor system software execution
• Features built-in inadvertent write protection via the WP pin

Supervisors Applications

• Microcontroller-based systems requiring memory and supervision
• Consumer electronics with low-power requirements
• Industrial control systems needing reliable power monitoring
• Automotive electronic modules operating in harsh environments

Supervisors Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance and lead-free specifications. Check for alternative packages if SOIC-8 availability is limited. Ensure design-in compatibility with existing I²C protocols. Review discontinuation notices for long-term supply chain risks.

Supervisors Selection Notes

Select this component when both EEPROM storage and voltage supervision are required in a single package. Consider the 2.8 V threshold for 3 V systems. Evaluate the SOIC-8 footprint against board space constraints. Compare power consumption with other supervisory circuits if battery life is critical. Verify I²C address compatibility with the target microcontroller.

Supervisors Part Context

Part of the CAT1021/1022/1023 family offering integrated memory and supervision solutions. The CAT1023 variant specifically includes a watchdog timer, distinguishing it from the CAT1021 which lacks this feature. Designed for CMOS technology to ensure low power consumption. Available in multiple packages including SOIC, TSSOP, and MSOP.

Supervisors Replacement Considerations

Check for direct substitutes within the CAT1023 series with different voltage thresholds. Consider CAT1021 variants if watchdog functionality is not needed. Verify pinout compatibility before replacing with similar supervisory ICs from other manufacturers.