24LCS52/ST

Memory IC Overview

The Microchip Technology 24LCS52/ST is a 2 Kbit (256 x 8) serial Electrically Erasable PROM featuring an I²C-compatible 2-wire interface. It operates on a single supply voltage ranging from 2.2 V to 5.5 V with a maximum clock frequency of 400 kHz. The device supports software write protection for the lower half of the array and hardware protection via the WP pin. It includes Schmitt trigger inputs, output slope control, and ESD protection exceeding 4,000V. Packaged in an 8-lead TSSOP, it functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional 2-wire serial communication with up to eight devices per bus
• Provides dual-level write protection through software commands and a dedicated hardware pin
• Includes internal address pointers for current, random, and sequential read operations
• Features noise suppression via Schmitt triggers and brown-out detection circuitry

Memory IC Applications

• Low-power data acquisition systems requiring non-volatile storage
• Personal communications devices needing compact memory solutions
• Industrial control units operating in electrically noisy environments
• Embedded systems utilizing I²C buses for configuration parameter retention

Memory IC Procurement Notes

Verify the specific suffix 'ST' corresponds to the TSSOP-8 package variant when sourcing. Confirm that the Industrial temperature grade (-40°C to +85°C) meets your operational requirements. Ensure the design accommodates the 2.2 V minimum supply voltage threshold. Check for RoHS compliance documentation if required by your manufacturing standards. Validate that the 400 kHz clock speed aligns with your system's bus timing constraints.

Memory IC Selection Notes

Select this component for applications requiring small footprint memory with robust write protection capabilities. The TSSOP-8 package suits space-constrained surface-mount designs. Consider the 1 mA active current consumption for battery-operated projects. The ability to protect half or all of the array offers flexibility for critical data storage. Ensure the master controller supports the required I²C start and stop conditions for reliable communication.

Memory IC Part Context

This part belongs to the 24XXX52 family of 2 Kbit serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24AA52 but differs in voltage specifications and clock compatibility. The family utilizes a common block diagram and pinout structure across various packages including PDIP, SOIC, and DFN variants. This standardization simplifies design transitions between different memory densities within the same product line.

Memory IC Replacement Considerations

The 24LC52 is a compatible alternative offering similar functionality with a slightly different voltage range. The 24AA52 provides equivalent features but operates down to 1.8 V. Verify package compatibility when substituting, as the ST suffix specifically denotes the TSSOP format. Ensure that any replacement maintains the required industrial temperature rating and I²C protocol support.