24AA64T-E/MS

Memory IC Overview

The Microchip Technology 24AA64T-E/MS is a 64-Kbit Electrically Erasable PROM organized as an 8K x 8-bit memory block. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports a maximum clock frequency of 400 kHz. The device utilizes a two-wire serial interface compatible with I2C protocols. It features 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 MSOP package and is qualified for extended temperature operation from -40°C to +125°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on a single bus using three functional address pins.
• Includes hardware write protection controlled by the WP pin to inhibit array writes.
• Features output slope control designed to eliminate ground bounce during switching.

Memory IC Applications

• Data logging systems requiring non-volatile storage
• Configuration parameter storage in embedded controllers
• Calibration data retention in industrial sensors

Memory IC Procurement Notes

Verify that the ordering suffix matches the required temperature grade and package type. Confirm the specific revision level against the manufacturer's latest datasheet to ensure compatibility with existing design specifications. Check for any recent product change notifications regarding packaging or material composition updates before finalizing procurement orders.

Memory IC Selection Notes

Select this component when low-voltage operation down to 1.7V is required alongside extended temperature range capabilities. Ensure the application can accommodate the 400 kHz maximum clock speed and utilizes the I2C protocol. Verify that the MSOP package dimensions fit the available PCB real estate and that the three address pins are utilized for device selection on the bus.

Memory IC Part Context

This part belongs to the 24AA64 family of 64-Kbit serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24LC64 and 24FC64 variants but is distinguished by its extended temperature rating and specific voltage operating range. The 'E' suffix denotes the extended temperature qualification, while 'MS' indicates the 8-lead MSOP surface-mount package configuration.

Memory IC Replacement Considerations

Direct replacements include other 24AA64 variants with different packages such as 24AA64-E/ST or 24AA64-E/SN. Cross-family alternatives like 24LC64-E/MS offer similar functionality but operate at a minimum voltage of 2.5V instead of 1.7V. Ensure any substitute maintains the same I2C compatibility and physical footprint if board space is constrained.