24CW640T-I/ST

Memory IC Overview

The Microchip Technology 24CW640T-I/ST is a 64-kbit (8K x 8) serial electrically erasable programmable read-only memory (EEPROM). It utilizes an I2C (2-wire) serial interface with a maximum clock frequency of 1 MHz. The device operates within a supply voltage range of 1.6 V to 5.5 V and supports surface mount installation in an 8-TSSOP package. Key electrical parameters include a 450 ns access time, 5 ms write cycle time, and a maximum active read current of 1 mA. It features software write protection and maintains data retention for up to 200 years.

Memory IC Feature Summary

• Supports high-speed I2C communication with a 1 MHz clock rate
• Includes software-based write protection mechanisms
• Ensures long-term data integrity with extended retention capabilities

Memory IC Applications

• Industrial temperature control systems
• Consumer electronics configuration storage
• Automotive sensor calibration data logging

Memory IC Procurement Notes

Verify the specific suffix 'I/ST' confirms the industrial temperature grade (-40°C to +85°C) and TSSOP-8 packaging. Confirm that the 'T' prefix indicates reel or cut-tape packaging formats rather than tube packaging. Ensure compatibility with the target system's I2C bus voltage levels and address configurations before finalizing procurement orders.

Memory IC Selection Notes

Select this component when a non-volatile memory solution is required for applications needing moderate storage density with low power consumption. The wide supply voltage range allows flexibility in system design across various logic families. The industrial temperature rating makes it suitable for environments where standard commercial grade components may fail due to thermal stress.

Memory IC Part Context

This part belongs to the 24CW series of serial EEPROMs from Microchip Technology. It shares architectural similarities with other members like the 24CW160 and 24CW1280 but offers a specific 64-kbit capacity. The series is designed for cost-effective data storage in embedded systems requiring reliable non-volatile memory with simple serial interfaces.

Memory IC Replacement Considerations

Direct pin-to-pin replacements within the same family include the 24CW640-I/ST (tube packaging) or other 64-kbit variants in different packages such as UDFN-8 if space constraints differ. Verify that any substitute maintains the same I2C addressing scheme and voltage specifications.