CAT1640WI-28

Supervisors Overview

The CAT1640WI-28 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It integrates a 64K EEPROM with I2C serial interface capabilities. The device operates within a supply voltage range of 3 V to 5.5 V, featuring a specific under-voltage threshold of 2.85 V and an over-voltage threshold of 3.15 V. It provides a manual reset function with a fixed reset delay time of 270 ms. The component utilizes an active low, open-drain output type and does not include a watchdog timer or battery backup switch. It is housed in an SOIC-8 package and supports surface mount installation.

Supervisors Feature Summary

• Integrates 64K EEPROM with I2C serial communication interface
• Provides manual reset functionality with defined delay timing
• Features active low open-drain output configuration
• Supports single input voltage supervision

Supervisors Applications

• CPU system monitoring
• Voltage supervision in embedded systems
• Data storage integration in microcontroller units

Supervisors Procurement Notes

Verify the exact suffix and package variant when sourcing, as availability may vary. Confirm RoHS compliance status through official documentation. Check for end-of-life notifications or discontinuance notices from onsemi prior to procurement. Ensure the supplier provides valid traceability documents. Validate that the received component matches the specified electrical thresholds and package dimensions.

Supervisors Selection Notes

Select this component when a combined supervisor and non-volatile memory solution is required. The integrated 64K EEPROM reduces board space compared to separate components. Verify that the 2.85 V threshold aligns with the target system's power rail requirements. Ensure the I2C interface compatibility exists with the host processor. Consider the absence of a watchdog timer if system reliability requires automatic timeout resets.

Supervisors Part Context

This part belongs to the CAT1640 series of supervisory circuits from onsemi. These devices are categorized under PMIC - Power Management ICs. The series typically offers various voltage thresholds and memory sizes. The WI-28 designation indicates the specific operating voltage range and package style. This family is designed for reliable operation in industrial and commercial environments.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult onsemi technical support for direct replacements. Verify pinout compatibility before considering alternative vendors. Ensure equivalent memory capacity and interface protocols match.