The X28C256D is a 256K EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Xicor Inc. This non-volatile memory device is designed for applications requiring in-system programmability and data storage without power. It's commonly used in embedded systems, industrial controls, and other applications where data retention is critical.

Applications

• Embedded Systems: Stores configuration parameters and data in embedded systems.
• Industrial Control: Used in programmable logic controllers (PLCs) and other industrial control equipment.
• Data Logging: Stores data in data loggers and monitoring systems.
• BIOS Storage: Used in older computer systems for storing BIOS firmware.

Features

• 256K Capacity: Provides ample storage for code and data.
• EEPROM Technology: Allows for electrical erasure and reprogramming.
• Non-Volatile Memory: Retains data without power.
• Fast Write Times: Enables quick updates to stored data.

Benefits

• Flexible Data Storage: Enables in-system programming and data updates.
• Data Retention: Ensures data integrity without power.
• Easy Updates: Electrical erasure and reprogramming simplify data management.
• Reliable Performance: Provides consistent and dependable data storage.

Additional Details

The X28C256D's key specifications include its operating voltage range, access time, erase/program cycle endurance, and power consumption. It is crucial to consult the datasheet for detailed electrical characteristics, timing diagrams, and package information. This EEPROM device typically supports JEDEC standard programming algorithms, enabling compatibility with various programming tools and equipment. The device is available in various packages such as DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit). Given Xicor's history (acquired by Intersil, then by Renesas), sourcing of this specific part may require careful verification of the supply chain and potential alternative manufacturers.