25CS640-E/SN36KVAO

Overview

The Microchip Technology 25CS640-E/SN36KVAO is an 8-Kbit SPI serial EEPROM featuring integrated Error Correction Code (ECC) for enhanced data integrity. It operates within a supply voltage range of 1.8 V to 5.5 V and supports clock frequencies up to 20 MHz. The device utilizes a standard SOIC-8 package and is qualified for automotive applications, supporting an extended operating temperature range from -40°C to +125°C. It offers a data retention period of 200 years and provides high endurance for reliable non-volatile storage in demanding environments.

Feature Summary

• Integrated Error Correction Code (ECC) ensures data reliability by detecting and correcting single-bit errors.
• Automotive qualification enables operation in harsh environments with temperatures reaching +125°C.
• High-speed SPI interface allows efficient communication with microcontrollers at frequencies up to 20 MHz.

Applications

• Automotive electronic control units requiring robust data logging
• Industrial systems needing long-term data retention and error protection
• Consumer electronics utilizing SPI-based memory architectures

Procurement Notes

Verify the specific suffix '36KVAO' against official Microchip documentation to confirm exact packaging, tape-and-reel specifications, and regional compliance certifications. Ensure the selected variant matches the required automotive grade and temperature rating for your specific application environment before finalizing procurement.

Selection Notes

Select this component when ECC functionality is mandatory for data integrity in SPI-based designs. It is suitable for applications requiring wide voltage operation and automotive-grade reliability. Compare against standard EEPROMs if error correction overhead is acceptable or if lower cost alternatives suffice without ECC requirements.

Part Context

This part belongs to the 25CS series of serial EEPROMs from Microchip Technology, designed specifically for automotive and industrial markets. The series emphasizes data integrity through built-in ECC capabilities. The 'SN' designation indicates the SOIC-8 package style, while the suffix denotes specific manufacturing and packaging configurations.

Replacement Considerations

Check for direct substitutes within the 25CS family, such as the 25CS160 or 25CS640 variants with different capacities or packages. Verify pin compatibility and software register mapping before replacing existing components to ensure seamless integration.