The X28HC256JI-12 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 that can be electrically erased and reprogrammed. The "-12" likely indicates an access time of 120ns.

Applications

• Embedded systems: Used for storing configuration data, calibration settings, and other non-volatile information.
• Industrial control equipment: Employed in PLCs (Programmable Logic Controllers) and other industrial devices for storing program code and parameters.
• Data logging: Utilized in data loggers to store sensor readings and other recorded data.
• Instrumentation: Found in various instruments for storing calibration data and settings.
• Telecommunications equipment: Used in communication devices for storing configuration data and software.

Features

• 256Kbit EEPROM: Provides 256 kilobits of non-volatile memory.
• Electrically erasable and programmable: Allows for in-system reprogramming without the need for UV light or other specialized equipment.
• Fast access time: The -12 designation indicates a 120ns access time, enabling quick data retrieval.
• JEDEC standard pinout: Complies with JEDEC standards, ensuring compatibility with other memory devices.
• Low power consumption: Designed for low power operation, suitable for battery-powered applications.
• Endurance: Capable of withstanding a large number of erase/write cycles.

Benefits

• Non-volatile data storage: Retains data even when power is removed, ensuring data integrity.
• In-system reprogrammability: Allows for easy updates and modifications to stored data.
• Fast data access: Enables quick retrieval of stored data, improving system performance.
• Easy integration: JEDEC standard pinout simplifies integration into existing systems.
• Energy efficiency: Low power consumption extends battery life in portable devices.

Additional Details

The X28HC256JI-12 is typically packaged in a JEDEC-standard DIP (Dual In-line Package). Key specifications include its supply voltage, operating temperature range, and erase/write cycle endurance. The datasheet provides detailed information on timing characteristics, power consumption, and other parameters critical for design considerations. The EEPROM is designed to operate within a specified voltage range and temperature, and it offers a high degree of data retention. The part is often used in applications needing reliable, non-volatile storage with the ability to update the stored data electrically.