24LC64T-I/SM

Memory IC Overview

The Microchip Technology 24LC64T-I/SM is a 64-Kbit Electrically Erasable PROM organized as an 8K x 8-bit memory block. It features a two-wire serial interface compatible with I2C protocols, supporting clock frequencies up to 400 kHz at supply voltages between 2.5V and 5.5V. The device utilizes low-power CMOS technology, ensuring active current consumption of no more than 3 mA and standby current of 1 µA maximum. It includes a 32-byte page write buffer and hardware write protection via the WP pin.

Memory IC Feature Summary

• Supports bidirectional data transfer using a standard two-wire serial bus protocol for efficient communication.
• Includes a 32-byte page write buffer to optimize data throughput during sequential write operations.
• Features Schmitt trigger inputs on SDA and SCL pins to suppress noise spikes and improve signal integrity.
• Provides hardware write protection capability through the dedicated WP pin to secure stored data.

Memory IC Applications

• Data logging in industrial control systems requiring non-volatile storage
• Configuration parameter storage in embedded microcontroller applications
• Calibration data retention in sensor modules and measurement devices

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape-and-reel quantity. Confirm the voltage range aligns with system requirements, as the LC variant operates from 2.5V. Ensure the temperature grade corresponds to the environmental conditions of the final assembly. Cross-reference the datasheet revision date to confirm compatibility with existing design specifications.

Memory IC Selection Notes

Select this component when a 64-Kbit capacity is sufficient for application needs. Choose this part over the AA or FC variants if the operating voltage must be strictly within the 2.5V to 5.5V range without support for lower voltages. Consider the MSOP package dimensions for space-constrained PCB layouts. Verify that the 400 kHz clock speed meets the system's timing constraints.

Memory IC Part Context

This device belongs to the 24LC64 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA64 and 24FC64 models but differs in minimum operating voltage and maximum clock frequency specifications. The family supports multiple package options including SOIC, MSOP, and DFN formats.

Memory IC Replacement Considerations

The 24LC64-I/SM is a direct equivalent without the tape-and-reel suffix. The 24LC64T-I/MS offers the same electrical characteristics in an MSOP package. Check for availability of automotive qualified versions if extended temperature ranges are required.