24LC65/SM

Memory IC Overview

The Microchip Technology 24LC65/SM is a 64Kbit (8K x 8) serial EEPROM utilizing an I2C interface. It operates within a voltage range of 2.5V to 6.0V and supports clock frequencies up to 400 kHz. The device features a 900 ns access time and a typical write cycle duration of 5 ms per page. It includes a 64-byte input cache for efficient page writes and offers programmable security and high-endurance block options. The component is housed in an 8-SOIJ surface-mount package and functions across a commercial temperature range of 0°C to +70°C.

Memory IC Feature Summary

• Supports industry-standard two-wire I2C bus protocol with Schmitt trigger inputs for noise suppression
• Features a relocatable 4K bit ultra-high-endurance memory block rated for 10 million erase/write cycles
• Includes programmable security options allowing write protection of up to fifteen contiguous 4K blocks
• Provides a 64-byte input cache to enable fast sequential write loads without interrupting the bus

Memory IC Applications

• Low-power nonvolatile data storage in personal communication devices
• Data acquisition systems requiring frequent updates to specific memory segments
• Embedded applications needing code or critical data protection via software-configurable security locks

Memory IC Procurement Notes

Verify that the ordering suffix '/SM' corresponds to the 8-pin SOIJ surface mount package as specified in the datasheet. Confirm the 'I' temperature grade designation if industrial range operation is required, though the base model typically denotes commercial range. Ensure compatibility with the 2.5V to 6.0V supply voltage constraints for your target application circuit design.

Memory IC Selection Notes

Select this component when a smart EEPROM with flexible memory endurance management is required. The 24LC65/SM is suitable for designs needing both standard endurance for general data and high endurance for frequently modified parameters. Consider the 64-byte page size and cache architecture for applications prioritizing write throughput over byte-level granularity.

Memory IC Part Context

The 24LC65/SM belongs to the 24XX65 family of smart serial EEPROMs from Microchip Technology. This family shares architectural similarities with the 24AA65 and 24C65, differing primarily in operating voltage ranges and temperature specifications. The /SM suffix specifically identifies the surface-mount SOIJ package variant within the broader 24LC65 product line.

Memory IC Replacement Considerations

Direct functional substitutes within the same package include the 24LC65/P for through-hole applications. For voltage-compatible replacements, the 24AA65/SM offers a wider 1.8V to 6.0V operating range. Verify pinout compatibility and electrical characteristics before substituting with other EEPROM families.