24CW640T-I/CS0668

Memory IC Overview

The Microchip Technology 24CW640T-I/CS0668 is a 64 Kbit (8K x 8) serial electrically erasable programmable read-only memory (EEPROM) utilizing an I2C interface. It operates within a supply voltage range of 1.6V to 5.5V and supports clock frequencies up to 1 MHz with a typical access time of 450 ns. The device features software write protection and is housed in a 4-CSP package. It is rated for industrial temperatures from -40°C to +85°C and ensures data retention for 200 years.

Memory IC Feature Summary

• Supports high-speed I2C communication with 1 MHz clock frequency
• Includes software-based write protection mechanisms
• Ensures long-term non-volatile data retention

Memory IC Applications

• Industrial control systems requiring persistent configuration storage
• Consumer electronics needing compact non-volatile memory solutions
• Embedded devices storing calibration data or user settings

Memory IC Procurement Notes

Verify the specific suffix CS0668 against official Microchip documentation to confirm the exact package type and tape-and-reel specifications. Ensure the industrial temperature grade (-40°C to +85°C) aligns with your system's environmental requirements. Cross-reference the I2C address configuration options provided in the datasheet to prevent bus conflicts during integration.

Memory IC Selection Notes

Select this component when a small footprint is critical, as the 4-CSP package offers significant space savings compared to standard SOIC or TSSOP alternatives. It is suitable for designs requiring robust data retention over extended periods without frequent rewriting. Consider the 1.6V minimum operating voltage if designing for low-power battery-operated applications where power efficiency is a priority.

Memory IC Part Context

This part belongs to the 24CW series of serial EEPROMs from Microchip Technology. The series is characterized by its compatibility with standard I2C protocols and availability in various package styles including CSP and TSSOP. The 24CW640 variant specifically provides 64 Kbit capacity, balancing storage needs with minimal pin count and board space consumption.

Memory IC Replacement Considerations

Direct replacements include other 24CW640 variants with different packages such as 24CW640-I/ST or 24CW640T-I/MUY, provided the physical footprint and pinout are compatible with the existing PCB layout.