24AA64T-E/SN

Memory IC Overview

The Microchip Technology 24AA64T-E/SN 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. The device operates on a single supply voltage ranging from 1.7V to 5.5V and supports extended temperature ranges from -40°C to +125°C. Key electrical characteristics include a maximum active current of 3 mA, standby current of 5 µA, and access time of 900 ns. It utilizes an 8-lead SOIC package.

Memory IC Feature Summary

• Supports page write operations with a 32-byte buffer for efficient data transfer
• Includes hardware write protection via the WP pin to secure array data
• Features Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination
• Allows cascading up to eight devices on the same bus using three address pins

Memory IC Applications

• Data logging in industrial environments requiring extended temperature stability
• Configuration storage for microcontroller-based systems
• Parameter retention in battery-powered low-voltage applications
• Automotive electronic modules meeting AEC-Q100 qualification standards

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the extended temperature range (-40°C to +125°C) and 'SN' indicates the 8-lead SOIC package. Confirm RoHS compliance status and ensure the ordering quantity matches the manufacturer's standard packaging requirements. Cross-reference the datasheet revision date to guarantee alignment with current electrical specifications.

Memory IC Selection Notes

Select this component when operation below 2.5V is required, distinguishing it from the 24LC64 variant which requires a minimum of 2.5V. Choose the 24AA64T-E/SN over the 24FC64 if a 400 kHz interface speed is sufficient, as the FC version offers higher speeds. Ensure the application benefits from the lower standby current compared to older EEPROM generations.

Memory IC Part Context

This part belongs to the 24XX64 family of 64-Kbit I2C Serial EEPROMs manufactured by Microchip Technology. The family includes variants like the 24LC64 and 24FC64, differentiated primarily by operating voltage thresholds and clock frequencies. The 24AA64 series is specifically designed for low-voltage applications starting at 1.7V.

Memory IC Replacement Considerations

Direct functional substitutes within the same package and specification include the 24AA64-I/SN for industrial temperature ranges or the 24LC64T-E/SN if the system voltage remains above 2.5V. Verify that any replacement maintains the 8-SOIC footprint and I2C protocol compatibility.