24FC128T-I/SM

Memory IC Overview

The Microchip Technology 24FC128T-I/SM is a 128 Kbit (16K x 8) serial electrically erasable PROM utilizing low-power CMOS technology. It features an I2C compatible two-wire serial interface with a maximum clock frequency of 1 MHz at VCC levels between 2.5V and 5.5V, and 400 kHz below 2.5V. The device operates within a supply voltage range of 1.7V to 5.5V and supports industrial temperature ranges from -40°C to +85°C. It includes a 64-byte page write buffer, hardware write-protect capability, and Schmitt trigger inputs for noise suppression.

Memory IC Feature Summary

• Supports high-speed serial data transmission via an I2C compatible two-wire bus interface.
• Includes a 64-byte page write buffer to optimize write cycle efficiency.
• Features hardware write protection controlled by the WP pin to secure memory arrays.
• Incorporates Schmitt trigger inputs on SDA and SCL pins to suppress noise spikes.

Memory IC Applications

• Personal communications devices requiring non-volatile data storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications with moderate speed requirements

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'SM' indicates the 8-lead MSOP package. Confirm the 'T' suffix denotes tape and reel packaging. Ensure the specific variant matches the required voltage and speed characteristics defined in the official datasheet.

Memory IC Selection Notes

Select this component when a 1 MHz I2C interface is required at voltages above 2.5V. The 24FC128 differs from the 24LC128 by supporting lower operating voltages down to 1.7V and higher clock speeds. Verify that the MSOP package fits the board layout constraints and that the address pins A0 and A1 are not utilized as they are unconnected in this package.

Memory IC Part Context

This part belongs to the 24XX128 family of serial EEPROMs manufactured by Microchip Technology. The family includes variants like the 24AA128 and 24LC128, which share similar architectures but differ in voltage ranges and clock frequencies. The 24FC128 specifically targets applications needing faster data rates while maintaining low power consumption.

Memory IC Replacement Considerations

Direct substitutes include other 24FC128 variants with different packages such as 24FC128-I/SN or 24FC128-I/ST. Cross-family replacements like the 24LC128 offer similar functionality but are limited to 400 kHz operation and a minimum voltage of 2.5V.