24CW640T-I/OT

Memory IC Overview

The Microchip Technology 24CW640T-I/OT is a 64 Kbit (8 k x 8) serial electrically erasable programmable read-only memory (EEPROM). It utilizes a 2-Wire I2C interface with a maximum clock frequency of 1 MHz and an access time of 450 ns. The device operates within a supply voltage range of 1.6 V to 5.5 V, drawing a maximum active read current of 1 mA. It features software write protection and is housed in a SOT-23-5 package. The component supports data retention for 200 years and functions across an industrial temperature range from -40°C to +85°C.

Memory IC Feature Summary

• Supports standard I2C communication protocol with software-based write protection capabilities
• Operates on low voltage supplies ranging from 1.6 V to 5.5 V
• Designed for long-term data retention over extended industrial temperature ranges

Memory IC Applications

• Industrial control systems requiring non-volatile parameter storage
• Consumer electronics needing secure configuration data retention
• Embedded devices utilizing I2C interfaces for system calibration values

Memory IC Procurement Notes

Verify the specific suffix OT corresponds to the SOT-23-5 package and tape-and-reel shipping format when ordering. Confirm that the industrial grade (-I) rating meets the thermal requirements of the target environment. Ensure the I2C address configuration aligns with the system bus design to prevent conflicts with other peripherals.

Memory IC Selection Notes

Select this component for applications requiring small footprint memory solutions compatible with low-voltage logic levels. The 64 Kbit capacity is suitable for storing firmware parameters or user settings. Consider the SOT-23-5 package constraints for PCB layout and verify that the 1 MHz clock speed satisfies the system's data throughput requirements.

Memory IC Part Context

This part belongs to the 24CW640 series of serial EEPROMs manufactured by Microchip Technology. The series offers various package options including TSSOP, MSOP, and WLCSP variants. The 24CW640T-I/OT specifically denotes the tape-and-reel version in the compact SOT-23-5 form factor, optimized for automated surface-mount assembly processes.

Memory IC Replacement Considerations

Direct replacements include other 24CW640 variants such as 24CW640-I/ST or 24CW640T-I/Q4B, provided the package type difference is accommodated in the design. Cross-reference with 24CS64 series parts if higher speed operation is required, noting the interface compatibility differences.