24LC65-I/SM

Memory IC Overview

The Microchip Technology 24LC65-I/SM is a 64Kbit (8K x 8) serial electrically erasable PROM featuring an I2C-compatible two-wire interface. It operates within a voltage range of 2.5V to 6.0V and supports clock frequencies up to 400 kHz with a typical access time of 900 ns. The device includes a 64-byte input cache for efficient page writes, high endurance blocks rated for 10 million cycles, and programmable security options. It is housed in an 8-pin SOIJ package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Features a relocatable 4K bit ultra-high-endurance block alongside the standard array for frequent data updates.
• Includes a 64-byte input cache that enables fast burst write loads by buffering multiple pages before internal programming.
• Offers programmable security options allowing write protection of up to fifteen contiguous 4K memory blocks.
• Incorporates Schmitt trigger inputs and noise filters on SCL and SDA lines to ensure reliable operation in noisy environments.

Memory IC Applications

• Advanced low-power personal communications systems
• Data acquisition applications requiring nonvolatile storage
• Systems needing flexible user-programmable memory features

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to +85°C) and 'SM' denotes the 8-pin surface mount SOIJ package. Confirm the voltage operating range matches the application requirements, as the LC variant specifies 2.5V to 6.0V, distinct from the AA or C variants. Ensure compatibility with the I2C bus protocol and check for any specific RoHS compliance documentation if required by the manufacturing process.

Memory IC Selection Notes

Select this component when a 64Kbit capacity with I2C interface is required for industrial environments. The 24LC65 series is suitable for designs needing robust data retention and high endurance for frequently written sectors. Consider the 64-byte cache feature if burst write performance is critical. Compare against the 24AA65 for lower voltage support or the 24C65 for wider voltage ranges if those parameters better fit the system constraints.

Memory IC Part Context

This part belongs to the 24XX65 family of smart serial EEPROMs from Microchip Technology. The family shares the same core architecture, including the 64-byte cache and security features, but differs in voltage operating ranges and temperature grades. The 24LC65 specifically targets the 2.5V to 6.0V range, distinguishing it from the broader 1.8V-6.0V range of the 24AA65 and the 4.5V-6.0V range of the 24C65.

Memory IC Replacement Considerations

The 24LC65-I/SN is a pin-compatible replacement in the SOIC package. For lower voltage applications, the 24AA65 series offers similar functionality with a 1.8V minimum supply. The 24C65 provides equivalent features but requires a higher minimum voltage of 4.5V.