24AA64FT-I/ST

Memory IC Overview

The Microchip Technology 24AA64FT-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 and includes a 32-byte page write buffer for efficient data handling. It incorporates hardware write-protect functionality for the upper quarter of the array (addresses 1800h-1FFFh) via the WP pin. The component is housed in an 8-lead TSSOP package and is rated for industrial temperature operation between -40°C and +85°C.

Memory IC Feature Summary

• Hardware write-protect capability for the upper quarter of the memory array
• Low-power CMOS technology with minimal standby and read currents
• Supports cascading up to eight devices on a single bus using functional address pins
• Schmitt trigger inputs provide noise suppression for reliable signal integrity

Memory IC Applications

• Personal communications systems requiring non-volatile data storage
• Data acquisition applications needing low-power memory solutions
• Industrial control systems operating within standard temperature ranges

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the 'ST' designation indicates an 8-lead TSSOP configuration. Confirm the temperature grade corresponds to the intended operational environment, ensuring it meets industrial specifications if exposure to temperatures below zero or above typical room conditions is expected during system deployment.

Memory IC Selection Notes

Select this component when a low-voltage EEPROM with integrated quarter-array write protection is required. Ensure the application design accommodates the 32-byte page write buffer limitations to prevent data corruption at page boundaries. Verify that the host controller supports the necessary I2C timing parameters for the selected supply voltage range to guarantee proper bus communication.

Memory IC Part Context

This part belongs to the 24AA64F series, which shares architectural similarities with the 24LC64F and 24FC64F families. While these variants share the same memory organization and interface, they differ in minimum operating voltage and maximum clock frequency specifications. The 24AA64F variant is specifically optimized for operation down to 1.7V, distinguishing it from higher-voltage counterparts.

Memory IC Replacement Considerations

Direct substitutes include other 24AA64F variants with different package options such as MSOP, PDIP, or SOIC, provided the electrical characteristics remain identical. Cross-family replacements like the 24LC64F require verification of voltage compatibility, as the LC series typically requires a minimum of 2.5V.