24LC128-I/SN

Memory IC Overview

The Microchip Technology 24LC128-I/SN is a 16K x 8 (128 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates on a single supply voltage ranging from 2.5V to 5.5V and features an I2C compatible two-wire serial interface with a maximum clock frequency of 400 kHz. The device supports page write operations with a 64-byte buffer and includes hardware write protection via the WP pin. It is housed in an 8-lead SOIC 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 configurable chip address inputs.
• Includes Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Features a self-timed erase/write cycle with a maximum page write time of 5 ms.

Memory IC Applications

• Personal communications
• Data acquisition systems
• Advanced low-power applications

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'SN' indicates the 8-lead SOIC package. Confirm the specific datasheet revision matches the required electrical characteristics, particularly regarding the 2.5V minimum operating voltage constraint distinct from other variants in the series.

Memory IC Selection Notes

Select this component when a non-volatile memory solution requires I2C connectivity and operation at voltages starting from 2.5V. Ensure the application environment remains within the specified industrial temperature limits. Consider the 64-byte page write buffer size for write efficiency and verify that the bus capacitance requirements are met for the 400 kHz clock speed.

Memory IC Part Context

This part belongs to the 24XX128 family, which also includes the 24AA128 and 24FC128. While sharing the same memory architecture and interface, the 24LC128 variant is specifically rated for a 2.5V to 5.5V supply range, distinguishing it from the 1.7V capable 24AA128 and the higher-speed 24FC128.

Memory IC Replacement Considerations

Direct substitutes within the same package and specification include the 24LC128T-I/SN (tape and reel version) or the 24LC128-E/SN for extended temperature ranges. Cross-brand replacements require verification of I2C compatibility and voltage levels.