24AA64-E/ST

Memory IC Overview

The Microchip Technology 24AA64-E/ST is a 64 Kbit Electrically Erasable PROM organized as an 8K x 8-bit memory block. It features a 2-wire I²C compatible serial interface with a maximum clock frequency of 400 kHz. The device operates on a single supply voltage ranging from 1.7 V to 5.5 V and supports automotive temperature grades from -40°C to +125°C. Key electrical characteristics include a maximum active current of 3 mA, standby current of 1 µA, and access time of 900 ns. It utilizes a TSSOP-8 surface mount package.

Memory IC Feature Summary

• Supports up to eight devices on the same bus using three hardware address pins for expanded addressing.
• Includes Schmitt trigger inputs on SDA and SCL lines to suppress noise spikes.
• Features output slope control logic designed to eliminate ground bounce during operation.
• Provides hardware write protection via the WP pin to inhibit array writes when tied high.

Memory IC Applications

• Advanced low-power personal communication systems
• Data acquisition applications requiring non-volatile storage
• Automotive electronic modules operating in extended temperature ranges

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and package type. Confirm the device meets RoHS compliance standards if applicable to your manufacturing process. Ensure the supplier provides valid traceability documentation for automotive-grade components. Check for any recent Product Change Notifications regarding packaging or labeling updates before placing orders.

Memory IC Selection Notes

Select this component when an I²C interface is required for low-voltage automotive environments. The 24AA64-E/ST is suitable for designs needing robust noise immunity through Schmitt triggers. Consider the page write buffer size if high throughput is necessary. Verify that the system power supply remains within the 1.7 V to 5.5 V operational range for reliable performance.

Memory IC Part Context

This part belongs to the 24AA64 family of EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24LC64 and 24FC64 series but is distinguished by its lower minimum operating voltage and specific automotive temperature rating. The 'E' suffix denotes the extended temperature range capability compared to industrial variants.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 24AA64-I/ST, 24AA64T-E/ST.