24LC64-E/P

Memory IC Overview

The Microchip Technology 24LC64-E/P is a 64-Kbit Electrically Erasable PROM (EEPROM) organized as an 8K x 8-bit memory block. It features a two-wire I2C compatible serial interface with a maximum clock frequency of 400 kHz at VCC levels between 2.5V and 5.5V. The device operates on a single supply voltage ranging from 2.5V to 5.5V, utilizing low-power CMOS technology with a maximum active current of 3 mA and standby current of 1 µA. It includes a 32-byte page write buffer, hardware write protection via the WP pin, and supports up to eight devices on the same bus using address pins A0, A1, and A2.

Memory IC Feature Summary

• I2C Compatible Two-Wire Serial Interface
• Hardware Write-Protect Capability
• 32-Byte Page Write Buffer
• Extended Temperature Range Operation

Memory IC Applications

• Industrial Control Systems
• Power Management Applications
• Communication and Network Equipment
• Automotive Electronics

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Extended temperature range (-40°C to +125°C) and 'P' indicates the 8-Lead PDIP package. Confirm the specific datasheet revision DS20001189 for accurate electrical characteristics. Ensure the application environment maintains VCC within the 2.5V to 5.5V operational limits specified for the 24LC64 series.

Memory IC Selection Notes

Select this component when extended industrial or automotive temperature ranges are required alongside standard I2C connectivity. The 24LC64-E/P is suitable for applications needing hardware write protection and high endurance. Consider the PDIP package for through-hole mounting requirements. Verify compatibility with host systems supporting 400 kHz clock speeds at the minimum operating voltage.

Memory IC Part Context

The 24LC64-E/P belongs to the Microchip 24XX64 family of 64-Kbit serial EEPROMs. This family shares common architectural features but differs in voltage ranges and clock speeds based on the prefix (AA, FC, LC). The 24LC64 variant specifically supports operation down to 2.5V, distinguishing it from the 1.7V capable 24AA64 and the 1 MHz capable 24FC64.

Memory IC Replacement Considerations

Direct replacements include other 24LC64 variants with different packages such as 24LC64-I/SN or 24LC64-E/MS, provided the temperature grade matches the requirement. Cross-family substitutes like 24AA64 or 24FC64 require verification of voltage and speed compatibility.