24LC64T-E/ST

Memory IC Overview

The Microchip Technology 24LC64T-E/ST is a 64-Kbit (8K x 8) serial EEPROM utilizing an I²C-compatible two-wire interface. It operates within a supply voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device features a 32-byte page write buffer, self-timed erase/write cycles with a maximum duration of 5 ms, and hardware write protection via the WP pin. It is housed in an 8-lead TSSOP package and rated for extended industrial temperatures from -40°C to +125°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on a single bus using three functional address pins.
• Includes Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination.
• Features a 32-byte page write buffer to optimize data transfer efficiency.

Memory IC Applications

• Industrial sensor calibration parameter storage
• Embedded system configuration retention
• Consumer electronics user preference memory

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Extended temperature range (-40°C to +125°C) and 'ST' indicates the 8-TSSOP package. Confirm the specific datasheet revision matches the required electrical characteristics. Ensure compatibility with the host controller's I²C voltage levels and pull-up resistor requirements.

Memory IC Selection Notes

Select this component when non-volatile byte-level storage is required with low standby current. The 2.5V minimum operating voltage distinguishes it from lower-voltage variants like the 24AA64. The TSSOP package is suitable for surface-mount applications requiring moderate pin density. Verify that the 400 kHz clock speed meets the system's data throughput needs.

Memory IC Part Context

This part belongs to the 24XX64 family of 64-Kbit serial EEPROMs. It shares architectural similarities with the 24AA64 and 24FC64 but differs in minimum operating voltage and maximum clock frequency specifications. The family utilizes a common block diagram and bus protocol, allowing for standardized software drivers across different voltage and speed variants.

Memory IC Replacement Considerations

Direct substitutes include other 24LC64 variants with different packages such as 24LC64T-E/SN or 24LC64T-E/MNY. Cross-family replacements like the 24AA64 require verification of voltage level compatibility.