CAT1023WI-25-A2

Supervisors Overview

The CAT1023WI-25-A2 is a supervisory circuit integrating a 2-kbit I2C serial EEPROM with manual reset and watchdog timer capabilities. It operates within a supply voltage range of 2.7 V to 5.5 V, featuring a precision power supply monitor with a threshold voltage of 2.5 V. The device supports a 400 kHz I2C bus interface and includes a 16-byte page write buffer. It provides brown-out protection and guarantees valid reset at VCC = 1 V. The component is housed in an 8-pin SOIC package and is designed for industrial and extended temperature ranges.

Supervisors Feature Summary

• Integrates 2-kbit I2C serial EEPROM with system power supervisor
• Includes manual reset input and watchdog timer functionality
• Provides precision power supply voltage monitoring with multiple threshold options
• Features built-in inadvertent write protection via WP pin

Supervisors Applications

• Microcontroller-based systems requiring memory and supervision
• Industrial control units needing brown-out protection
• Embedded devices utilizing I2C communication interfaces

Supervisors Procurement Notes

Verify the specific suffix 'A2' against official onsemi documentation to confirm package type and temperature grade. Ensure compatibility with 2.5 V threshold requirements. Confirm RoHS compliance status through manufacturer datasheets. Validate lead times and availability directly with authorized distributors as standard stock levels vary.

Supervisors Selection Notes

Select this component when a combined solution for data storage and system supervision is required. It is suitable for applications needing manual reset inputs and watchdog timers alongside I2C memory. Consider the 2.5 V threshold specifically if operating near lower voltage limits. Ensure the 8-pin SOIC package fits the PCB layout constraints.

Supervisors Part Context

Part of the CAT1023 family from onsemi, which combines CMOS EEPROM with supervisory circuits. This series targets microcontroller systems by reducing component count. The CAT1023 variant specifically includes manual reset and watchdog features, distinguishing it from simpler supervisor-only parts.

Supervisors Replacement Considerations

Check for direct substitutes like CAT1023WI-25-G or CAT1023WI-25-T3 based on packaging and tape/reel requirements. Verify that alternative suffixes maintain the same 2.5 V threshold and manual reset functionality before substitution.