CAT1022ZI-45-GT3

Supervisors Overview

The CAT1022ZI-45-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU supervision with an integrated I2C serial 2k-bit CMOS EEPROM. It features a manual reset input and a watchdog timer to ensure system reliability. The device operates within a supply voltage range of 2.7 V to 5.5 V and includes a fixed threshold voltage of 4.5 V. It provides an open-drain output with a reset delay time of 200 ms. The component supports single-input monitoring and lacks battery backup switching. It is housed in an MSOP-8 package and functions within a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates a 2k-bit I2C serial EEPROM for non-volatile data storage alongside supervisory functions
• Includes a manual reset input and a built-in watchdog timer for enhanced system control
• Provides an open-drain output suitable for interfacing with various logic families

Supervisors Applications

• CPU power supply monitoring in embedded systems
• Data retention applications requiring integrated non-volatile memory
• Industrial control systems requiring watchdog functionality

Supervisors Procurement Notes

Verify the specific suffix GT3 for tape-and-reel packaging configuration. Confirm the ZI designation indicates the MSOP-8 package variant. Check current lifecycle status as older revisions may be discontinued or subject to last-time buys. Ensure compatibility with I2C bus speeds supported by the target microcontroller. Validate that the 4.5 V threshold aligns with the system's operating voltage requirements.

Supervisors Selection Notes

Select this component when both voltage supervision and small-scale data storage are required in a compact footprint. The MSOP-8 package offers space efficiency compared to wider SOIC variants. The 4.5 V threshold is appropriate for 5 V systems. Consider the 200 ms reset delay for system startup timing. Verify that the open-drain output can drive the necessary load without external pull-ups if not already present in the design.

Supervisors Part Context

This part belongs to the CAT1022 series of supervisory circuits from onsemi (formerly Catalyst Semiconductor). The series combines voltage monitoring with I2C EEPROM capabilities. The CAT1022ZI-45-GT3 specifically denotes the 4.5 V threshold version in the MSOP-8 package with reel packaging. It is part of onsemi's portfolio for power management ICs focused on system reliability.

Supervisors FAQ

Does the CAT1022ZI-45-GT3 support battery backup switching?

No, this specific model does not include battery backup switching functionality.

What is the reset delay time for this supervisory circuit?

The reset delay time is specified as 200 ms.