24AA64XT-I/ST

Memory IC Overview

The Microchip Technology 24AA64XT-I/ST is a 64-Kbit Electrically Erasable PROM organized as an 8K x 8-bit memory block. It features a two-wire serial interface compatible with I2C protocols and operates on a single supply voltage ranging from 1.7V to 5.5V. The device supports clock frequencies up to 400 kHz for standard operation and includes Schmitt trigger inputs for noise suppression. It offers hardware write protection, output slope control to eliminate ground bounce, and ESD protection exceeding 4,000V.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using functional address pins A0, A1, and A2.
• Includes a 32-byte page write buffer to optimize data transfer efficiency.
• Features hardware write-protect capability via the WP pin to secure the entire memory array.

Memory IC Applications

• Personal communications systems requiring low-power non-volatile storage
• Data acquisition applications needing reliable parameter retention
• Industrial control systems utilizing I2C-compatible serial interfaces

Memory IC Procurement Notes

Verify the specific ordering suffix 'X/ST' against official Microchip documentation to confirm package orientation and tape-and-reel specifications. Ensure the industrial temperature grade (I) matches the operational environment requirements of -40°C to +85°C. Confirm RoHS compliance status for the specific manufacturing batch prior to integration.

Memory IC Selection Notes

Select this component when a 64-Kbit EEPROM with I2C compatibility is required in an X-Rotated TSSOP package. Consider the 1.7V minimum operating voltage for low-power designs. Evaluate the need for hardware write protection and the ability to cascade multiple units on a single bus line for expanded address space.

Memory IC Part Context

This part belongs to the 24XX64 family, which includes the 24AA64, 24FC64, and 24LC64 variants. The 'AA' designation indicates support for operation down to 1.7V, distinguishing it from the 24LC64 series which requires a minimum of 2.5V. The 'X/ST' suffix specifically denotes the X-Rotated TSSOP package type.

Memory IC Replacement Considerations

Direct substitutes within the same package include other 24AA64 variants such as 24AA64T-I/ST or 24AA64-I/ST, provided the reel/tube packaging preference aligns. Cross-family replacements like 24LC64 require voltage level adjustments due to higher minimum operating voltages.