FT24C256A-USR-B

Overview

The FT24C256A-USR-B is a 256K-bit (32K x 8) serial EEPROM manufactured by Fremont Micro Devices. It operates within a voltage range of 1.7V to 5.5V and supports I2C-compatible two-wire serial interfaces. The device features hardware write protection, sector-based erase capabilities, and high endurance ratings of up to one million program/erase cycles. Data retention exceeds ten years.

Feature Summary

• Supports standard and fast-mode I2C communication protocols
• Includes hardware write-protect functionality for data security
• Offers sector-level erase and write operations for flexible memory management

Applications

• Consumer electronics configuration storage
• Industrial control system parameter logging
• Automotive embedded systems data retention

Procurement Notes

Verify the specific suffix 'USR-B' against official Fremont Micro Devices documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with your target operating voltage range before procurement. Cross-reference the manufacturer's latest datasheet for any updates on RoHS compliance or lead-free status.

Selection Notes

Select this component when a low-voltage, small-footprint EEPROM is required for I2C-based designs. Consider the 1.7V minimum operating voltage for battery-powered applications. Verify that the required write endurance and data retention periods align with the product's specified one million cycles and ten-year retention limits.

Part Context

This part belongs to the FT24C series of serial EEPROMs designed for cost-sensitive and space-constrained applications. The series typically offers varying memory densities while maintaining compatible pinouts and interface protocols across different capacities, facilitating design upgrades without significant layout changes.

Replacement Considerations

Check Fremont Micro Devices' official substitution guide for direct replacements. Verify pinout compatibility and electrical characteristics if considering alternatives from other manufacturers. Ensure the substitute supports the same I2C addressing scheme and voltage requirements.