24LC64T-E/MNY

Memory IC Overview

The Microchip Technology 24LC64T-E/MNY is a 64-Kbit (8K x 8) Electrically Erasable PROM (EEPROM) featuring a two-wire I2C serial interface. It operates within a supply voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device utilizes an 8-lead Thin Dual Flat No-Lead (TDFN) package with dimensions of 2x3 mm. Key electrical characteristics include a maximum active current of 3 mA, a standby current of 1 µA at industrial temperatures, and a write cycle time of 5 ms.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using three functional address pins for expanded addressing.
• Includes hardware write protection via the WP pin to inhibit array writes while maintaining read access.
• Features a 32-byte page write buffer to optimize data transfer efficiency during write operations.

Memory IC Applications

• Data logging in industrial control systems
• Configuration storage for embedded microcontrollers
• Parameter retention in consumer electronics

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Extended temperature range (-40°C to +125°C) and 'MNY' indicates the 8-TDFN package. Confirm the 'T' suffix denotes tape and reel packaging. Ensure compatibility with the required I2C bus speed and voltage levels before finalizing procurement specifications.

Memory IC Selection Notes

Select this component when an extended operating temperature range is required alongside standard I2C connectivity. The 24LC64 series is suitable for applications needing non-volatile memory with hardware write protection. Compare against the 24AA64 if lower voltage operation down to 1.7V is necessary, or the 24FC64 if higher clock speeds are needed.

Memory IC Part Context

This part belongs to the 24LC64 family of 64-Kbit serial EEPROMs manufactured by Microchip Technology. The family shares common architectural features but varies in voltage ranges, temperature grades, and physical packages. The 24LC64 specifically targets applications requiring robust performance in industrial environments.

Memory IC Replacement Considerations

Direct replacements within the same package and temperature grade include other 24LC64 variants such as 24LC64T-I/MNY for industrial temperature range. Cross-family substitutes like 24AA64 or 24FC64 require verification of voltage and speed compatibility.

Memory IC FAQ

How does the WP pin function?

The Write-Protect (WP) pin inhibits write operations when tied to VCC. When tied to VSS, write operations are enabled. Read operations remain unaffected regardless of the WP pin state.

What is the maximum page write size?

The device supports a page write buffer of up to 32 bytes. Writing more than 32 bytes causes the address pointer to roll over, overwriting previous data in the same page.