24FC256-E/ST16KVAO

Memory IC Overview

The Microchip Technology 24FC256-E/ST16KVAO is a 32K x 8 (256-Kbit) Serial Electrically Erasable PROM (EEPROM). It operates with a supply voltage range of 1.7V to 5.5V and supports a maximum clock frequency of 1 MHz at VCC ≥ 2.5V, dropping to 400 kHz below that threshold. The device features an I²C compatible two-wire serial interface, hardware write-protect capability, and a 64-byte page write buffer. It is qualified for automotive applications under AEC-Q100 standards and offers extended temperature operation from -40°C to +125°C.

Memory IC Feature Summary

• Supports high-speed 1 MHz I²C communication when operating above 2.5V
• Includes hardware write-protect functionality via the WP pin
• Features a 64-byte page write buffer for efficient data writing
• Provides robust noise suppression through Schmitt trigger inputs

Memory IC Applications

• Automotive electronic systems requiring AEC-Q100 qualification
• Data acquisition circuits needing non-volatile storage
• Personal communication devices utilizing low-power CMOS technology
• Industrial control systems operating in extended temperature environments

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the Extended temperature range (-40°C to +125°C) rather than Industrial grade. Confirm the 'ST' designation corresponds to the TSSOP package type. Ensure the '16KVAO' suffix aligns with required RoHS compliance and packaging specifications before finalizing procurement orders.

Memory IC Selection Notes

Select this component when high-speed 1 MHz I²C performance is required alongside extended temperature reliability. It is suitable for designs needing hardware write protection and low standby current. Compare against 24LC256 if lower speed suffices or 24AA256 if only industrial temperature is needed. Ensure the system voltage supports the 1 MHz specification.

Memory IC Part Context

This part belongs to the 24XX256 family of 256-Kbit I²C Serial EEPROMs manufactured by Microchip Technology. The family includes variants like 24AA256 and 24LC256, differentiated primarily by speed and temperature ratings. The 24FC256 specifically targets applications demanding faster bus speeds compared to standard industry counterparts.

Memory IC Replacement Considerations

Direct replacements within the same datasheet include the 24FC256-I/ST for industrial temperature range or other package variations like 24FC256T-E/ST for tape and reel options. Cross-family substitution requires verifying voltage compatibility and interface timing differences.