24AA65T/SM

Memory IC Overview

The Microchip Technology 24AA65T/SM is a 64Kbit (8K x 8) serial EEPROM utilizing an I²C-compatible two-wire interface. It operates within a voltage range of 1.8V to 6.0V and supports clock frequencies up to 400 kHz in Fast Mode. The device features a relocatable high-endurance block rated for 10 million cycles, while the remaining array supports 1 million cycles. It includes a 64-byte input cache for efficient page writes and offers programmable security options to protect critical data.

Memory IC Feature Summary

• Features a relocatable 4K-bit ultra-high-endurance memory block capable of 10 million erase/write cycles.

Memory IC Applications

• Advanced low-power nonvolatile code and data storage applications
• Personal communications systems requiring frequent data updates
• Systems needing hardware write protection for critical configuration data

Memory IC Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging as indicated by distributor listings. Confirm the temperature grade 'I' matches industrial requirements (-40°C to +85°C). Ensure the SOIJ package width aligns with PCB footprint specifications. Cross-reference the specific revision level against the latest datasheet DS21073K to confirm pinout and electrical characteristics remain unchanged.

Memory IC Selection Notes

Select this component when a wide supply voltage range starting at 1.8V is required, distinguishing it from the 24LC65 which starts at 2.5V. Choose this part over the 24C65 if lower voltage operation below 4.5V is necessary. The 64-byte cache feature makes it suitable for applications requiring burst write performance. Ensure the design accommodates the specific noise suppression requirements provided by the Schmitt trigger inputs on the SCL and SDA lines.

Memory IC Part Context

This device belongs to the 24XX65 family of smart serial EEPROMs, which also includes the 24LC65 and 24C65 variants. While sharing the same memory architecture and interface protocol, these variants differ primarily in their operating voltage ranges and specified temperature grades. The 24AA65 specifically targets low-voltage applications down to 1.8V.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 24AA65-I/SM, 24AA65-E/SM.