24LC64FT-E/OT

Memory IC Overview

The Microchip Technology 24LC64FT-E/OT is a 64 Kbit Electrically Erasable PROM organized as an 8K x 8-bit memory block. It operates on a single supply voltage ranging from 2.5V to 5.5V and utilizes a 2-wire serial interface compatible with the I²C™ protocol. The device supports clock frequencies of up to 400 kHz and features a 32-byte page write buffer. It includes hardware write protection for the upper quarter of the array (addresses 1800h-1FFFh) via the WP pin. The component is housed in an 8-lead TSSOP package and is rated for industrial temperature ranges.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using three functional address pins.
• Features Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination.
• Includes self-timed erase/write cycles with a typical page write time of 5 ms.
• Provides hardware write protection for one-quarter of the memory array.

Memory IC Applications

• Personal communications systems requiring low-power non-volatile storage.
• Data acquisition applications needing reliable parameter retention.
• Industrial control systems utilizing I²C serial communication.
• Embedded devices requiring hardware-level data protection.

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and package type, as the datasheet defines distinct variants for Industrial and Automotive grades. Confirm the presence of the 'T' suffix indicates tape-and-reel packaging if automated assembly is intended. Ensure the 'E' designation aligns with the specified operating temperature range requirements for the target application environment.

Memory IC Selection Notes

Select this component when a 64 Kbit capacity with I²C compatibility is required. The 24LC64F variant specifically requires a minimum supply voltage of 2.5V, distinguishing it from lower-voltage counterparts like the 24AA64F. Consider the 32-byte page write capability for efficient data throughput. Verify that the 8-pin TSSOP package dimensions fit the available PCB space constraints.

Memory IC Part Context

This part belongs to the 24XX64F family of serial EEPROMs, which also includes the 24AA64F and 24FC64F models. These devices share identical pinouts and functional protocols but differ in supply voltage ranges and maximum clock speeds. The 24LC64F series is optimized for standard 2.5V to 5.5V operation, providing a balance between power consumption and speed for general-purpose embedded memory applications.

Memory IC Replacement Considerations

Direct substitutes within the same family include the 24LC64F-I/OT for industrial temperature grades or 24LC64F-E/OT for automotive grades, provided the package remains 8-TSSOP. Cross-family replacements like the 24LC64 (non-F version) lack the quarter-array write protection feature and must be evaluated carefully.