The X28C256P is a 256K (32K x 8) CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Xicor Inc. This memory device is designed for applications requiring non-volatile storage, where data needs to be retained even when power is removed. It offers the flexibility of in-system programmability and is suitable for storing configuration data, calibration constants, and other persistent information.

Applications

• Data Logging: Used for storing data in data logging systems.
• Configuration Storage: Stores configuration parameters for embedded systems.
• Calibration Data Storage: Used to store calibration constants for various devices.
• Firmware Storage: Stores firmware code for microcontrollers and other embedded processors.
• Industrial Control Systems: Used in industrial control systems for storing parameters and program code.

Features

• 256K (32K x 8) EEPROM: Provides 256 kilobits of non-volatile storage.
• CMOS Technology: Low power consumption due to CMOS technology.
• In-System Programmability: Allows for programming and erasing while the device is in the circuit.
• Fast Access Time: Offers fast read access times for quick data retrieval.
• Automatic Page Write Operation: Simplifies the write process with automatic page write capability.
• Data Polling for End of Write Detection: Enables easy detection of the end of the write cycle.
• JEDEC Standard Pinout: Adheres to a JEDEC standard pinout for ease of integration.

Benefits

• Non-Volatile Storage: Retains data even when power is removed.
• Flexibility: Allows for in-system programming and erasing, making it easy to update data.
• Low Power Consumption: Consumes minimal power due to CMOS technology.
• Reliability: Offers reliable data storage with a long data retention time.
• Easy Integration: JEDEC standard pinout simplifies integration into existing systems.

Additional Details

The X28C256P requires a specific programming voltage for write operations. Refer to the Xicor Inc. datasheet for detailed electrical specifications, including read access time, write cycle time, and programming voltage requirements. The datasheet also provides information on data retention characteristics and endurance (number of write/erase cycles). Proper decoupling of the power supply pins with appropriate capacitors is essential for stable operation. Avoid exceeding the maximum voltage ratings to prevent damage to the device.