CAT1163WI-45-G

Supervisors Overview

The CAT1163WI-45-G is a supervisory circuit manufactured by onsemi, designed for CPU systems. It integrates a 16K-bit serial CMOS EEPROM with hardware write protection, a precision power supply monitor, and a watchdog timer. The device operates within a voltage range of 2.7 V to 6 V, featuring a threshold voltage of 4.5 V and an overvoltage threshold of 4.75 V. It utilizes an I²C bus interface and offers active high, active low, or open drain reset outputs. The component includes manual reset capability and provides a reset delay time of 270 ms. It is housed in an 8-pin SOIC package and supports operation temperatures from -40°C to +85°C.

Supervisors Feature Summary

• Integrates 16K-bit serial EEPROM with hardware memory write protection and I²C interface
• Includes a watchdog timer that monitors the SDA line to recover from system hangs
• Provides precise power supply monitoring with brown-out protection and multiple reset output options

Supervisors Applications

• Microcontroller-based system supervision
• CPU power management and reset control
• Data storage applications requiring hardware write protection

Supervisors Procurement Notes

Verify the specific suffix 'G' indicates lead-free compliance and RoHS status as per official documentation. Confirm the package variant matches the required SOIC-8 specifications. Check current availability status as this component may be subject to lifecycle changes. Ensure compatibility with existing I²C bus protocols and voltage levels before integration.

Supervisors Selection Notes

Select this component when a combined solution for memory storage and system supervision is required. It is suitable for designs needing integrated watchdog functionality without additional external components. Consider the 4.5 V threshold for systems operating at standard logic levels. Verify that the 16K bit capacity meets data retention requirements compared to smaller variants like the CAT1023 series.

Supervisors Part Context

The CAT1163 series belongs to onsemi's family of supervisory circuits with integrated serial EEPROM. Unlike the CAT1162, which lacks a watchdog timer, the CAT1163 includes this feature for enhanced system reliability. It serves as a complete memory and supervisory solution, replacing discrete components for power monitoring and non-volatile storage in embedded applications.

Supervisors Replacement Considerations

The CAT1163WI-30-GT3 is a direct substitute with a different threshold voltage (3.0 V). For lower capacity needs, the CAT1023WI-45-GT3 offers similar features but with only 2K-bit EEPROM and no watchdog timer.