24LCS52-I/SN

Memory IC Overview

The Microchip Technology 24LCS52-I/SN is a 2 Kbit (256 x 8) serial EEPROM featuring an I²C-compatible 2-wire interface with a maximum clock frequency of 400 kHz. It operates within a supply voltage range of 2.2 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. The device includes software write protection for the lower 128 bytes and hardware protection via the WP pin, utilizing an 8-lead SOIC package.

Memory IC Feature Summary

• Features dual write protection mechanisms including permanent software protection for the lower half of the memory array and external hardware protection for the entire array via the WP pin.
• Supports high-speed synchronous data transfer using a standard 2-wire I²C compatible bus protocol with Schmitt trigger inputs for noise suppression.
• Incorporates output slope control circuitry designed to eliminate ground bounce during switching operations.

Memory IC Applications

• Data logging in industrial monitoring systems
• Configuration storage for embedded controllers
• Calibration parameter retention in sensor modules

Memory IC Procurement Notes

Verify the specific suffix 'I/SN' corresponds to the Industrial temperature grade (-40°C to +85°C) and the 8-lead SOIC package format. Confirm that the required voltage range aligns with the 2.2 V minimum specification for the 24LCS52 variant rather than the 1.8 V minimum found in other family members like the 24AA52.

Memory IC Selection Notes

Select this component when a 2 Kbit non-volatile memory solution requires robust write protection capabilities alongside standard I²C connectivity. Ensure the system design accommodates the 400 kHz bus speed and provides appropriate pull-up resistors for the SDA and SCL lines to meet timing specifications.

Memory IC Part Context

This part belongs to the 24XXX52 family of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24AA52 but differs in operating voltage thresholds and clock frequency compatibility, specifically optimized for higher speed operation at voltages above 2.2 V.

Memory IC Replacement Considerations

The 24LC52 is a direct functional replacement offering identical pinout and memory organization. Verify that the substitute part meets the specific industrial temperature range requirements if the original application demands performance below -40°C or above +85°C.

Memory IC FAQ

How does the hardware write protect pin function?

Tying the WP pin to VCC enables hardware write protection for the entire array, preventing any write operations regardless of the software write-protect register status. Tying it to VSS disables this hardware lock.

What is the behavior of the software write protection?

Software write protection permanently locks the lower 128 bytes (addresses 00h-7Fh). Once enabled via a specific command sequence, this protection cannot be reversed without applying a special reset voltage to the WP pin.