24CSM01T-E/ST66KVAO

Memory IC Overview

The Microchip Technology 24CSM01T-E/ST66KVAO is a 1-Mbit (128 K x 8) serial EEPROM featuring an I²C interface with support for Fast Mode Plus speeds up to 3.4 MHz. It operates within a supply voltage range of 1.7 V to 5.5 V and is housed in an 8-MSOP package. The device supports page write operations with a typical cycle time of 5 ms and offers a data retention period of 200 years. Designed for automotive applications, it meets AEC-Q100 standards and functions reliably across an extended temperature range from -40°C to +125°C.

Memory IC Feature Summary

• Supports high-speed I²C communication with Fast Mode Plus capability up to 3.4 MHz
• Includes hardware write protection via dedicated WP pin and enhanced software write protection mechanisms
• Features a factory-programmed 128-bit unique serial number for device identification
• Complies with AEC-Q100 automotive qualification standards for reliability

Memory IC Applications

• Automotive electronic control units requiring non-volatile data storage
• Industrial systems needing secure parameter configuration and calibration data retention
• Embedded devices utilizing unique serial numbers for authentication or tracking

Memory IC Procurement Notes

Verify the specific suffix ST66KVAO against official Microchip documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with system voltage levels and I²C bus speed requirements before integration. Confirm that the extended temperature grade meets environmental constraints for the intended application environment.

Memory IC Selection Notes

Select this component when high-speed I²C access is required alongside robust security features such as hardware and software write protection. The 1-Mbit capacity suits applications storing significant configuration data or logs. Verify that the MSOP-8 package fits the PCB layout constraints and that the operating voltage range aligns with the system power supply.

Memory IC Part Context

This part belongs to the 24CSM01 family of serial EEPROMs designed for high-reliability environments. The family integrates security features like unique serial numbers and write protection into standard I²C EEPROM functionality. The T suffix indicates tape-and-reel packaging suitable for automated assembly processes.

Memory IC Replacement Considerations

Check for direct substitutes within the 24CSM01 series with different suffixes for package variations. Compare electrical characteristics and feature sets of alternative 1-Mbit I²C EEPROMs if cross-brand sourcing is necessary.