24AA128T-E/ST16KVAO

Memory IC Overview

The Microchip 24AA128T-E/ST16KVAO is a 128 Kbit (16K x 8) serial EEPROM utilizing 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 features a 64-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression. It is qualified under AEC-Q100 standards for automotive applications, ensuring reliability in demanding environments.

Memory IC Feature Summary

• Supports cascading up to eight devices on a single bus using configurable chip select pins.
• Includes hardware write protection to inhibit array writes when the WP pin is tied high.
• Features output slope control to eliminate ground bounce during operation.

Memory IC Applications

• Automotive data acquisition systems
• Personal communications devices
• Low-power embedded memory storage

Memory IC Procurement Notes

Verify that the ordering suffix '16KVAO' corresponds to the specific tape and reel packaging configuration required for automated assembly. Confirm the extended temperature grade (-40°C to +125°C) matches the operational environment specifications. Ensure compatibility with the target system's I2C bus voltage levels and pull-up resistor requirements before finalizing procurement.

Memory IC Selection Notes

Select this component for designs requiring robust automotive-grade non-volatile memory with low power consumption. The 1.7V minimum operating voltage makes it suitable for battery-powered applications. The 64-byte page write capability enhances write efficiency compared to byte-write-only devices. Verify that the TSSOP package fits the available PCB footprint constraints.

Memory IC Part Context

This part belongs to the 24XX128 family of serial EEPROMs from Microchip Technology. It shares functional similarities with the 24LC128 and 24FC128 but is distinguished by its wider voltage range starting at 1.7V and its specific automotive qualification. The 'E' designation indicates the extended temperature range variant.

Memory IC Replacement Considerations

Direct substitutes within the same family include the 24AA128-I/ST for industrial temperature ranges or the 24LC128-E/ST if the lower voltage start point is not required. Cross-family replacements like the 24CS128 offer similar capacity but utilize different interface protocols or performance characteristics.