24AA515T-I/SM

Memory IC Overview

The Microchip Technology 24AA515T-I/SM is a 64K x 8 (512K bit) Serial Electrically Erasable PROM. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports I²C compatible 2-wire serial interface communication with a maximum clock frequency of 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 housed in an 8-lead SOIJ surface-mount package and is rated for industrial temperature operation between -40°C and +85°C.

Memory IC Feature Summary

• Supports cascading up to four devices on the same data bus using configurable chip select inputs A0 and A1.
• Includes a 64-byte page write buffer to facilitate efficient sequential data writing operations.
• Features hardware write protection that inhibits all write cycles when the WP pin is tied to VCC.

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 the specific ordering suffix 'T' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the 'I' designation aligns with the necessary industrial temperature range specifications for your target environment. Ensure the SOIJ package dimensions match your printed circuit board layout constraints before finalizing procurement orders.

Memory IC Selection Notes

Select this component when a broad voltage operation range starting at 1.7V is required, distinguishing it from variants limited to higher minimum voltages. Consider the 400 kHz maximum clock speed sufficient for your system's data throughput requirements. Evaluate the need for hardware write protection and the specific 64-byte page write capability against alternative memory architectures.

Memory IC Part Context

This part belongs to the 24XX515 family of 512Kbit I²C CMOS Serial EEPROMs manufactured by Microchip Technology. The family includes the 24LC515 and 24FC515 variants, which share similar functional characteristics but differ in minimum operating voltage and maximum clock frequency specifications. The 24AA515 variant specifically enables operation down to 1.7V.

Memory IC Replacement Considerations

The 24LC515 and 24FC515 are functionally related parts within the same datasheet. However, they require a minimum supply voltage of 2.5V, unlike the 24AA515 which supports 1.7V. Verify voltage compatibility before substitution.