24LCS52/SN

Memory IC Overview

The Microchip Technology 24LCS52/SN is a 2 Kbit (256 x 8) Electrically Erasable PROM featuring an I²C-compatible 2-wire serial interface. It operates within a supply voltage range of 2.2V to 5.5V and supports a maximum clock frequency of 400 kHz. The device includes software write protection for the lower 128 bytes and hardware write protection for the entire array via the WP pin. It utilizes low-power CMOS technology with typical active current of 1 mA and standby current of 1 µA. The component is housed in an 8-lead SOIC package and is rated for industrial temperature operation from -40°C to +85°C.

Memory IC Feature Summary

• Features dual write protection mechanisms, including permanent software protection for the lower half of memory and hardware protection for the entire array via the WP pin.
• Supports high-speed 400 kHz I²C communication with Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Incorporates a page write buffer allowing up to 16 bytes of data to be written simultaneously, reducing overall bus transaction time.

Memory IC Applications

• Industrial systems requiring non-volatile data storage with robust noise immunity
• Embedded controllers needing secure configuration parameter retention
• Low-power battery-operated devices utilizing I²C bus architectures

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the SOIC-8 package type, as the base part number covers multiple physical packages. Confirm the 'I' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the design accounts for the open-drain nature of the SDA line by implementing appropriate pull-up resistors for the target voltage level.

Memory IC Selection Notes

Select this component when a 2 Kbit EEPROM with I²C interface is required alongside strict write protection capabilities. The 400 kHz speed suits applications demanding faster data throughput than standard 100 kHz buses. Consider the SOIC-8 package constraints regarding board space and thermal dissipation relative to other available package options like TSSOP or DFN.

Memory IC Part Context

This device belongs to the 24XXX52 family of 2 Kbit serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA52 but is optimized for higher clock frequencies up to 400 kHz across its operating voltage range. The family is designed for general-purpose non-volatile memory applications where data integrity and bus compatibility are critical.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include 24LC52 variants from compatible manufacturers if voltage and speed specifications align. Verify pinout compatibility and electrical characteristics before substitution.

Memory IC FAQ

How is the software write protection reset?

The software write protection can be reset by applying a voltage of Vcc + 5.5V to the WP pin for at least 1µs while sending a specific reset command sequence.

What happens if a page write crosses a physical page boundary?

If a page write attempts to cross a physical page boundary, the data wraps around to the beginning of the current page, overwriting previously stored data instead of proceeding to the next page.