24LC128-I/ST

Memory IC Overview

The Microchip Technology 24LC128-I/ST is a 16K x 8 (128 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates with a single supply voltage ranging from 2.5V to 5.5V and supports I2C compatible two-wire serial interface at clock frequencies up to 400 kHz. The device features a 64-byte page write buffer, hardware write-protect capability via the WP pin, and Schmitt trigger inputs for noise suppression. It is available in an 8-lead TSSOP package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using functional address lines A0, A1, and A2.
• Includes hardware write protection that inhibits write operations when the WP pin is tied to VCC.
• Features output slope control designed to eliminate ground bounce during operation.

Memory IC Applications

• Personal communications systems
• Data acquisition applications
• Low-power CMOS technology implementations

Memory IC Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage range requirements align with the 2.5V minimum specification for the LC variant. Ensure the design accounts for the 8-TSSOP physical dimensions and pinout configuration as detailed in the official datasheet.

Memory IC Selection Notes

Select this component for designs requiring non-volatile storage with I2C connectivity. The 24LC128 differs from the 24AA128 by its higher minimum operating voltage of 2.5V compared to 1.7V. Consider the page write buffer size and endurance specifications when planning memory write cycles for the target application environment.

Memory IC Part Context

This part belongs to the 24XX128 series, which includes the 24AA128 and 24FC128 variants. These devices share similar architectural features but differ in voltage ranges and maximum clock frequencies. The 24LC128 specifically targets applications requiring operation between 2.5V and 5.5V with standard I2C speeds.

Memory IC Replacement Considerations

The 24AA128-I/ST serves as a direct substitute if the system supports the lower 1.7V minimum voltage threshold. Verify compatibility regarding the specific package marking and electrical characteristics before implementation.