25LC512-E/SN16KVAO

Overview

The Microchip Technology 25LC512-E/SN16KVAO is a 512 Kbit (64 K x 8) serial EEPROM utilizing an SPI-compatible interface. It operates within a voltage range of 2.5 V to 5.5 V and supports clock frequencies up to 20 MHz at higher voltages or 10 MHz at lower voltages. The device features a 128-byte page size, 1 million erase/write cycle endurance, and data retention exceeding 200 years. It includes sector write protection for 16 KB sectors and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Supports byte and page-level write operations with self-timed erase cycles without requiring prior page or sector erasure.
• Includes hardware write protection via the WP pin and software block protection through the STATUS register.
• Features a HOLD input to pause serial communication without resetting the sequence, allowing host interruption handling.
• Provides deep power-down mode for minimal current consumption and electronic signature identification.

Applications

• Automotive systems requiring AEC-Q100 qualified non-volatile memory
• Microcontroller-based configurations storing calibration parameters
• Industrial devices logging operational data
• Embedded systems managing persistent settings

Procurement Notes

Verify that the specific suffix 'SN16KVAO' corresponds to the SOIC-8 package and Extended temperature range as indicated by the 'E' designation in the base part number. Confirm that the '16KVAO' segment aligns with the manufacturer's specific reel or tape-and-reel packaging requirements for this variant. Ensure compatibility with the required SPI bus speeds and voltage levels during integration.

Selection Notes

Select this component when extended industrial temperature operation up to 125°C is necessary, as indicated by the 'E' suffix. The SOIC-8 package offers surface-mount convenience. Consider the 128-byte page size for write efficiency and the 16 KB sector protection granularity for security-sensitive applications. Verify that the system voltage remains within the 2.5 V to 5.5 V operating range.

Part Context

This device belongs to the 25LC512 family of serial EEPROMs from Microchip Technology. It shares architectural similarities with other members like the 25LC512-I/P but differs in package type and temperature rating. The 'E' denotes extended temperature capability, while 'SN' specifies the SOIC-8 package. It complements the broader 25LC series covering various densities from 1 Kbit to 1 Mbit.

Replacement Considerations

Direct replacements include the 25LC512-E/SN for identical electrical and thermal specifications in the same package. For different packages, consider the 25LC512-E/MF (DFN-S-8). Industrial grade equivalents are available as the 25LC512-I variants, though they lack the extended temperature rating.