25CS640T-E/SN36KVAO

Overview

The Microchip Technology 25CS640T-E/SN36KVAO is a 64 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 an 8-SOIC package in tape-and-reel configuration, designed for surface-mount applications. It offers a data retention period of 200 years and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Integrated Error Correction Code (ECC) ensures reliable data storage by detecting and correcting bit errors.
• High-speed SPI interface supports clock frequencies up to 20 MHz for efficient data transfer.
• Wide operating voltage range accommodates systems powered between 1.8 V and 5.5 V.
• Extended industrial temperature rating allows operation in harsh environments up to 125°C.

Applications

• Automotive electronic control units requiring high reliability and ECC protection
• Industrial controllers operating in extreme temperature conditions
• Data logging systems needing long-term non-volatile memory retention

Procurement Notes

Verify the complete part number including the suffix 36KVAO to confirm the specific tape-and-reel packaging and automotive-grade qualification. Ensure compatibility with the target system's voltage levels and SPI protocol requirements before integration. Cross-reference the manufacturer's latest datasheet for any updates regarding pin configurations or electrical characteristics.

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 flexibility and high-temperature resilience. Consider the SOIC-8 package constraints for PCB layout. Verify that the 20 MHz clock speed meets the system's throughput requirements without exceeding timing margins.

Part Context

This part belongs to the 25CS series of serial EEPROMs from Microchip Technology, which are distinguished by their built-in ECC capabilities. The series targets automotive and industrial markets where data corruption risks are higher. The 'T' designation indicates tape-and-reel packaging, while 'SN' specifies the SOIC-8 body style.

Replacement Considerations

Direct replacements must match the 64 Kbit capacity, SPI interface, and ECC feature. Verify that alternative parts support the same 1.8 V to 5.5 V voltage range and 125°C operating temperature. Check package compatibility if physical footprint constraints exist.