The X28C256JI-20 is a 256K EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Xicor Inc. This memory device is designed for applications requiring non-volatile data storage, meaning that it retains data even when power is removed. It is organized as 32,768 words x 8 bits.

Applications

• Embedded Systems: Used for storing firmware, configuration data, and calibration parameters in embedded systems.
• Industrial Control: Employed in industrial controllers and programmable logic controllers (PLCs) for storing program instructions and system settings.
• Instrumentation: Integrated into instruments for storing calibration data, measurement parameters, and system configuration.
• Data Logging: Used in data logging applications to store sensor readings and other data that needs to be preserved over time.
• Automotive Electronics: Utilized in automotive systems for storing engine control parameters, diagnostic information, and other critical data.

Features

• Non-Volatile Memory: Retains data even when power is removed, ensuring data integrity.
• Electrically Erasable: Allows for in-system reprogramming, simplifying firmware updates and data modifications.
• Fast Access Time: Features a 200ns access time, enabling quick data retrieval.
• Low Power Consumption: Designed for low power operation, making it suitable for battery-powered applications.
• JEDEC Standard Pinout: Compatible with industry-standard memory devices, simplifying system integration.
• Page Mode Write: Supports page mode write operations, increasing write throughput.

Benefits

• Data Retention: Ensures data integrity even during power outages, preventing data loss and system failures.
• Flexibility: Allows for easy firmware updates and data modifications in-system, reducing downtime and maintenance costs.
• Performance: Provides fast access to data, enabling quick system response times.
• Efficiency: Consumes minimal power, extending battery life in portable devices and reducing overall energy consumption.
• Compatibility: Integrates seamlessly with existing systems, simplifying design and development.
• Improved Write Speed: Page mode write allows faster writing speeds compared to byte-by-byte writing.

Additional Details

The X28C256JI-20 operates on a single 5V power supply and features TTL-compatible inputs and outputs. It supports both byte-wide and page-mode write operations. The device is available in a JEDEC standard 28-pin DIP package, facilitating easy integration into existing systems. It boasts a typical endurance of 10,000 erase/write cycles per byte, making it suitable for applications requiring frequent reprogramming.