24LC512-E/ST14

Memory IC Overview

The Microchip Technology 24LC512-E/ST14 is a 512 Kbit (64K x 8) Electrically Erasable PROM featuring a two-wire I²C compatible serial interface. It operates on a single supply voltage ranging from 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device utilizes low-power CMOS technology with a maximum standby current of 5 µA at extended temperatures. It includes hardware write protection, Schmitt trigger inputs for noise suppression, and output slope control. The component is housed in a 14-lead TSSOP package and is qualified for industrial temperature ranges extending from -40°C to +125°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using hardware address pins A0, A1, and A2.
• Features a 128-byte page write buffer to optimize data transfer efficiency.
• Includes hardware write protection via the WP pin to inhibit array writes when tied high.
• Provides ESD protection exceeding 4000V and data retention capabilities greater than 200 years.

Memory IC Applications

• Data logging systems requiring non-volatile storage
• Configuration memory for embedded controllers
• Parameter storage in industrial instrumentation

Memory IC Procurement Notes

Verify the specific ordering suffix 'E' confirms the Extended temperature range (-40°C to +125°C) and 'ST14' denotes the 14-lead TSSOP package. Confirm RoHS compliance status as required by project specifications. Ensure the design accounts for the 2.5V minimum operating voltage, which differs from lower-voltage variants in the family. Cross-reference the datasheet revision to ensure compatibility with intended interface timing requirements.

Memory IC Selection Notes

Select this part when an I²C interface is required for 512 Kbit capacity within an extended industrial temperature environment. The 14-lead TSSOP package offers a compact surface-mount solution suitable for space-constrained designs. Consider the 400 kHz maximum clock speed and page write architecture for system throughput planning. Verify that the host controller can support the open-drain SDA line requirements and appropriate pull-up resistor values.

Memory IC Part Context

This component belongs to the 24XX512 family of serial EEPROMs, which also includes the 24AA512 and 24FC512 variants. While sharing the same memory organization and interface protocol, these variants differ in minimum operating voltage and maximum clock frequency specifications. The 24LC512 specifically targets applications requiring operation down to 2.5V, distinguishing it from the 1.7V capable 24AA512 and the higher-speed 24FC512.

Memory IC Replacement Considerations

Direct substitutes include other 24LC512 variants with different packages or temperature grades, such as 24LC512-I/ST14 for industrial temperature range or 24LC512-E/SN for SOIC packaging. Ensure any replacement maintains the 14-lead TSSOP form factor if board space is constrained. Verify that alternative sources provide equivalent electrical characteristics regarding standby current and write cycle times.