FM24C09UFEM8X

Memory IC Overview

The FM24C09UFEM8X is an 8 Kbit CMOS non-volatile serial EEPROM organized as 1K x 8 bit memory. It conforms to the Standard IIC 2-wire protocol, utilizing Clock (SCL) and Data I/O (SDA) lines for synchronous communication between a master microprocessor and the slave device. The component supports an extended operating voltage range of 2.7 V to 5.5 V and features hardware write protection for the upper half of the memory array via the WP pin. It is housed in an 8-pin TSSOP package.

Memory IC Feature Summary

• Hardware write protection allows the upper half of the memory array to be disabled against programming by connecting the WP pin to VCC.

Memory IC Applications

• Microcontroller-based systems requiring non-volatile data storage
• Industrial control applications with standard IIC bus interfaces

Memory IC Procurement Notes

Verify the specific suffix 'FEM8X' against official Fairchild or onsemi documentation to confirm exact tape-and-reel specifications and temperature grade. Confirm current availability status as legacy components may have limited supply chains. Ensure the selected variant matches the required IIC address configuration and package dimensions for the target PCB layout.

Memory IC Selection Notes

Select this component when an 8 Kbit capacity is required within a compact 8-pin surface-mount form factor. The Standard IIC interface simplifies board layout by minimizing pin count. Consider the hardware write protection feature if system security requires preventing accidental modification of critical configuration data stored in the upper memory half.

Memory IC Part Context

This part belongs to the FM24C08U/09U family of 8-Kbit Serial EEPROMs manufactured by Fairchild Semiconductor. These devices are designed to minimize device pin count and simplify PC board layout requirements while providing reliable non-volatile storage solutions compatible with standard IIC protocols.

Memory IC Replacement Considerations

FM24C08U variants offer identical electrical characteristics but lack the upper-half hardware write protection feature found in the FM24C09U series. Verify that the absence of write protection does not compromise system integrity before substituting.