The Catalyst Semiconductor CAT25040SE is a 4Kb SPI Serial CMOS EEPROM, organized as 512 x 8 bits. This device offers non-volatile memory storage accessed through a standard SPI (Serial Peripheral Interface). It's designed for applications where low power consumption and reliable data storage are essential, such as storing configuration settings, parameters, or calibration data.

Applications

• Industrial control systems
• Consumer electronics
• Medical devices
• Automotive electronics
• Set-top boxes
• Smart cards

Features

• 4Kb (512 x 8) EEPROM
• SPI Serial Interface
• Low-voltage operation
• Low power consumption
• Self-timed write cycle
• Write protect feature
• High reliability and data retention
• 8-Pin SOIC package

Benefits

• Easy interfacing with microcontrollers via SPI
• Retains stored data even without power supply
• Suitable for battery-powered and low-power applications
• Protects data from accidental overwriting
• Ensures long-term storage integrity

Additional Details

The CAT25040SE supports SPI modes 0 and 3. It features a self-timed write cycle, simplifying the write operation. A hardware write protect pin is available to prevent unwanted data modification. The device is available in an 8-Pin SOIC package. Because this part is END-OF-LIFE, sourcing options may be limited.