The X28HC256S-12 is a 256K EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Xicor Inc. (now part of Intersil). This device is designed for applications requiring non-volatile storage with byte-alterable capability, fast access times, and low power consumption. It's commonly used to store configuration parameters, calibration data, and other critical information in a variety of systems.

Applications

• Embedded Systems: Used for storing configuration settings, calibration data, and other non-volatile information.
• Industrial Control Systems: Employed in industrial automation and control systems for storing program parameters and process variables.
• Instrumentation: Used in test and measurement equipment for storing calibration data and instrument settings.
• Medical Devices: Utilized in medical equipment for storing patient data, device configurations, and event logs.
• Automotive Electronics: Employed in automotive systems for storing vehicle configuration parameters, engine management data, and diagnostic information.

Features

• 256K EEPROM (32K x 8): Provides 256 kilobits of non-volatile storage with byte-alterable capability.
• Fast Access Time: Offers quick read and write operations, improving system performance. The -12 designation indicates an access time of 120ns.
• Low Power Consumption: Minimizes power consumption, extending battery life in portable devices.
• Byte-Alterable: Allows individual bytes to be programmed or erased without affecting other memory locations.
• Self-Timed Write Cycle: Simplifies write operations and reduces system overhead.

Benefits

• Non-Volatile Storage: Retains data even when power is removed, ensuring data integrity and system reliability.
• Improved System Performance: Fast access times enable quick retrieval and storage of data, enhancing overall system performance.
• Extended Battery Life: Low power consumption minimizes drain on power supplies, extending battery life in portable applications.
• Flexible Memory Management: Byte-alterable capability allows for precise and efficient management of stored data.
• Simplified System Design: Self-timed write cycles reduce the complexity of write operations, simplifying system design.

Additional Details

The X28HC256S-12 typically operates with a supply voltage of 5V and features an access time of 120 ns, as indicated by the "-12" suffix in the part number. It supports both read and write operations via a standard parallel interface. The endurance is typically rated at 10,000 write cycles per byte. The device is commonly packaged in a DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit) for easy integration into electronic circuits. For detailed specifications, including timing characteristics, electrical parameters, and application notes, consult the manufacturer's datasheet.

This EEPROM is designed for applications requiring reliable non-volatile storage with byte-alterable capability, fast access times, and low power consumption. Its flexible memory management and simplified write operations make it a suitable choice for a wide range of embedded systems, industrial control systems, and consumer electronic devices.