24LC64T-I/OT

Memory IC Overview

The Microchip Technology 24LC64T-I/OT 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 between 2.5V and 5.5V. The device utilizes low-power CMOS technology, drawing a maximum active current of 3 mA and standby current of 1 µA. It includes a 32-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression. The component operates within an industrial temperature range of -40°C to +85°C and is housed in a 5-lead SOT-23 package.

Memory IC Feature Summary

• Supports bidirectional data transmission over a two-wire serial bus with I2C compatibility
• Includes a 32-byte page write buffer to optimize sequential data writing operations
• Features hardware write protection controlled by the WP pin to prevent unauthorized array modifications
• Incorporates Schmitt trigger inputs on SDA and SCL pins to suppress noise spikes

Memory IC Applications

• Data logging systems requiring non-volatile storage
• Configuration parameter storage in embedded controllers
• Calibration data retention in sensor modules
• Device identification and security code storage

Memory IC Procurement Notes

Verify that the specific ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'OT' denotes the 5-lead SOT-23 package configuration. Confirm RoHS compliance status and ensure the voltage supply range matches the 2.5V to 5.5V specification required for the 24LC64 variant rather than the lower voltage 24AA64 or 24FC64 series.

Memory IC Selection Notes

Select this component when a compact surface-mount solution is required for 64-Kbit EEPROM applications. The SOT-23 package offers space efficiency compared to larger SOIC or MSOP options. Ensure the application design accommodates the lack of physical address pins (A0-A2) on this specific package, which limits multi-device addressing capabilities on a single bus compared to packages with exposed address terminals.

Memory IC Part Context

This part belongs to the 24XX64 family of 64-Kbit I2C Serial EEPROMs manufactured by Microchip Technology. The family includes variants like the 24AA64 and 24FC64, which differ primarily in operating voltage ranges and maximum clock speeds. The 24LC64 specifically supports operation down to 2.5V, distinguishing it from the 1.7V capable 24AA64 and the high-speed 1 MHz 24FC64.

Memory IC Replacement Considerations

Compatible substitutes include other 24LC64 variants with different packaging such as 24LC64-I/SN (SOIC), 24LC64-I/MS (MSOP), or 24LC64-I/MC (DFN). Cross-referencing with 24AA64 or 24FC64 requires verification of voltage tolerance and clock frequency limitations.