24AA64T-I/SM

Memory IC Overview

The Microchip Technology 24AA64T-I/SM 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, supporting clock frequencies up to 400 kHz at supply voltages of 2.5V to 5.5V and 100 kHz below 2.5V. The device operates within a voltage range of 1.7V to 5.5V and supports industrial temperature grades from -40°C to +85°C. It utilizes a TSSOP-8 package and includes hardware write protection.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using three address pins for expanded addressing.
• Includes Schmitt trigger inputs and output slope control to suppress noise and eliminate ground bounce.
• Features a 32-byte page write buffer to optimize data transfer efficiency.
• Provides hardware write protection via the WP pin to secure the entire memory array.

Memory IC Applications

• Low-power embedded systems requiring non-volatile data storage
• Industrial control applications needing reliable parameter retention
• Multi-device I2C bus architectures requiring address expansion

Memory IC Procurement Notes

Verify that the ordering suffix 'SM' corresponds specifically to the MSOP-8 package variant rather than other available packages like SOIC or TSSOP. Confirm the 'I' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the tape and reel packaging indicated by the 'T' suffix aligns with automated assembly requirements.

Memory IC Selection Notes

Select this component when a low-voltage EEPROM with I2C compatibility is required for space-constrained designs. The MSOP-8 package offers a compact footprint suitable for high-density PCB layouts. Consider the 400 kHz maximum clock speed for standard I2C performance needs and verify that the 1.7V minimum operating voltage meets the system's power supply constraints.

Memory IC Part Context

This part belongs to the 24XX64 family of 64-Kbit serial EEPROMs manufactured by Microchip Technology. The family includes variants such as 24LC64 and 24FC64, which differ primarily in operating voltage ranges and maximum clock speeds. The 24AA64 series is characterized by its wide voltage operation down to 1.7V and standard I2C interface capabilities.

Memory IC Replacement Considerations

Direct substitutes include other 24AA64 variants with different package options, such as 24AA64-I/SN (SOIC) or 24AA64-I/ST (TSSOP), provided the physical footprint change is acceptable. Cross-family replacements like 24LC64 require verification of the higher minimum supply voltage requirement.