24AA64T-E/MNY

Memory IC Overview

The Microchip Technology 24AA64T-E/MNY is a 64-Kbit (8K x 8) serial EEPROM featuring an I2C-compatible two-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies up to 400 kHz. The device utilizes low-power CMOS technology with 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 Schmitt trigger inputs for noise suppression. The component is housed in an 8-lead TDFN package and is rated for extended temperature operation from -40°C to +125°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using three dedicated chip address pins.
• Includes a 32-byte page write buffer to optimize data transfer efficiency.
• Features hardware write protection controlled by the WP pin to prevent unintended memory modifications.
• Incorporates Schmitt trigger inputs and output slope control to suppress noise and eliminate ground bounce.

Memory IC Applications

• Data logging in industrial monitoring systems
• Configuration storage in embedded controllers
• Parameter retention in automotive electronic modules

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 specific 8-TDFN package variant. Confirm compatibility with the host system's I2C voltage levels and pull-up resistor requirements before integration.

Memory IC Selection Notes

Select this part when extended temperature performance is required alongside low-voltage operation down to 1.7V. Ensure the application benefits from the hardware write protection feature and requires the specific physical dimensions of the TDFN package compared to other available form factors.

Memory IC Part Context

This component belongs to the 24AA64 family of 64-Kbit serial EEPROMs manufactured by Microchip Technology. It shares functional specifications with the 24FC64 and 24LC64 variants but is distinguished by its specific voltage range and temperature rating defined by the ordering suffixes.

Memory IC Replacement Considerations

Compatible substitutes include the 24AA64T-I/MNY for industrial temperature ranges or the 24LC64T-E/MNY if the minimum operating voltage requirement is 2.5V instead of 1.7V. Verify package compatibility and electrical characteristics before substitution.

Memory IC FAQ

How does the hardware write protection function?

The WP pin allows users to write-protect the entire array. When tied to VCC, write operations are inhibited while read operations remain unaffected. When tied to VSS, write protection is disabled.

What is the maximum number of devices supported on a single bus?

Up to eight devices can be connected to the same bus by utilizing the three chip address inputs (A0, A1, A2) to create unique client addresses.