CAT1640YI-28

Supervisors Overview

The CAT1640YI-28 is a supervisory circuit manufactured by onsemi, designed for single voltage systems. It integrates an I2C serial 64K CMOS EEPROM for data storage alongside its monitoring functions. The device operates within a supply voltage range of 2.7 V to 6 V and features a threshold voltage of 2.85 V or 3 V. It provides an open drain or open collector output with an active low reset signal. The minimum reset timeout is 130 ms. Operating temperatures range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates I2C serial 64K EEPROM for non-volatile data storage
• Provides manual reset capability with active low output
• Supports open drain or open collector interface configurations

Supervisors Applications

• Single voltage system supervision
• CPU monitoring with integrated memory
• Data logging in embedded systems

Supervisors Procurement Notes

Verify the specific suffix and package type against the official datasheet to ensure compatibility. Confirm the I2C address configuration if multiple devices are used. Check for end-of-life status as availability may be limited. Ensure the operating temperature range meets the application requirements. Validate the EEPROM endurance specifications for the intended write cycles.

Supervisors Selection Notes

Select this component when both voltage supervision and persistent data storage are required in a single package. The I2C interface allows for flexible communication with microcontrollers. Consider the open drain output for level shifting capabilities. Verify that the 64K EEPROM capacity suffices for the application's data logging needs. Ensure the reset timeout meets the system startup requirements.

Supervisors Part Context

This part belongs to the CAT1640 series of supervisory circuits with integrated EEPROM. It differs from variants without memory or with different thresholds. The I2C interface distinguishes it from simpler reset-only supervisors. It is part of onsemi's portfolio for power management and system protection.

Supervisors Replacement Considerations

Check for CAT1640YI-30S or other suffixes for different threshold voltages. Verify pinout compatibility with existing designs. Ensure the I2C interface is supported by the host controller. Confirm that the EEPROM size and endurance meet the new design requirements.