The X24C04P is a 4Kb CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Xicor, Inc. (later acquired by Intersil, now Renesas). This device is a serial EEPROM, meaning it communicates with a host microcontroller or other devices via a serial interface, specifically the I2C (Inter-Integrated Circuit) protocol.

Applications:

• Data storage in embedded systems
• Configuration storage for electronic devices
• Serial presence detect (SPD) in memory modules
• Storage of calibration data
• Storage of user preferences

Features:

• 4Kb (512 x 8) EEPROM
• I2C Serial Interface
• Low Voltage Operation (typically 5V or 3.3V)
• Self-Timed Write Cycle
• Write Protect Feature
• High Reliability (typically 1,000,000 Erase/Write Cycles)
• Data Retention (typically 100 years)
• 8-Pin PDIP Package

Benefits:

• Non-volatile storage, meaning data is retained even when power is removed
• Easy interfacing with microcontrollers via the I2C protocol
• Small package size allows for use in space-constrained applications
• Write protection prevents accidental data corruption
• High endurance and data retention ensure long-term reliability
• Low power consumption

Additional Details:

The X24C04P uses the I2C serial interface, which requires only two signal lines (SDA and SCL) plus power and ground, making it easy to integrate into a system. The device supports byte write and page write modes for efficient data storage. The self-timed write cycle simplifies the write operation, as the host does not need to provide precise timing signals. The write protect feature can be enabled to prevent accidental overwriting of the data stored in the EEPROM.

The X24C04P is available in an 8-pin PDIP (Plastic Dual In-Line Package), which is a through-hole package suitable for breadboarding and prototyping, as well as for production use. The device is typically rated for operation over the industrial temperature range.