24AA64T/SN

Memory IC Overview

The 24AA64T/SN is a 64-Kbit Electrically Erasable PROM organized as an 8K x 8-bit memory block. It features a two-wire I2C compatible serial interface and operates on a single supply voltage ranging from 1.7V to 5.5V. The device supports clock frequencies of up to 400 kHz at VCC ≥ 2.5V, with a maximum access time of 900 ns. It utilizes a 32-byte page write buffer and includes hardware write protection via the WP pin.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using three address pins for expanded addressing.
• Incorporates Schmitt trigger inputs and output slope control to suppress noise and eliminate ground bounce.
• Features a self-timed erase/write cycle with a 32-byte page write buffer for efficient data handling.

Memory IC Applications

• Industrial systems requiring non-volatile data storage within -40°C to +85°C temperature ranges.
• Embedded controllers needing low-power standby operation with minimal active current consumption.
• Applications utilizing standard I2C buses for bidirectional data transmission protocols.

Memory IC Procurement Notes

Verify that the specific ordering suffix 'SN' corresponds to the SOIC-8 package type required for your design. Confirm the temperature grade matches industrial specifications if operating outside standard commercial limits. Ensure the tape and reel packaging aligns with automated assembly equipment capabilities.

Memory IC Selection Notes

Select this component when a 64-Kbit capacity is sufficient for system requirements. Choose this part over higher-density variants if lower power consumption and simpler bus management are priorities. Ensure the host controller supports the required I2C protocol timing constraints for reliable communication.

Memory IC Part Context

This device belongs to the 24XX64 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24FC64 and 24LC64 models but differs in minimum operating voltage and maximum clock frequency specifications based on the specific series designation.

Memory IC Replacement Considerations

Direct substitutes include other members of the 24XX64 family such as the 24LC64 or 24FC64, provided voltage and speed requirements are met. Verify package compatibility and temperature range before substituting to ensure physical and electrical alignment.

Memory IC FAQ

How does the Write Protect (WP) pin function?

Connecting the WP pin to VCC inhibits all write operations while allowing read operations to proceed normally. Connecting it to VSS enables write access to the memory array.

What is the maximum number of devices supported on a single bus?

Up to eight devices can be connected to the same I2C bus by configuring the A0, A1, and A2 chip select pins to unique logic levels.