The X28C256DI-25 is a 256K EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Xicor Inc. It is a non-volatile memory device that can be electrically erased and reprogrammed, making it suitable for applications requiring frequent data updates and long-term data storage. The X28C256DI-25 features a fast access time and low power consumption.

Applications:

• Data logging
• Configuration storage
• Program storage
• Calibration data storage
• Firmware updates

Features:

• 256Kbit (32K x 8) memory capacity
• Electrically erasable and programmable
• Fast access time
• Low power consumption
• Byte or page write operation
• Self-timed write cycle

Benefits:

• Data retention even when power is removed.
• Flexibility to update data in-system without removing the device.
• Quick data retrieval due to fast access time.
• Suitable for battery-powered applications due to low power consumption.
• Efficient data writing with byte or page write options.
• Simplified write operation with self-timed write cycle.

Additional Details:

The X28C256DI-25 EEPROM is widely used in various embedded systems and electronic devices. Its non-volatile nature ensures that data is retained even when power is lost, making it ideal for storing critical configuration parameters, calibration data, and program code. The device's electrical erasability and programmability allow for easy in-system updates, eliminating the need for manual reprogramming. The X28C256DI-25 supports both byte and page write operations, providing flexibility in how data is written to the memory. The self-timed write cycle simplifies the write operation and reduces the need for external control circuitry. Xicor Inc. was acquired by Intersil, and later by Renesas Electronics, and these chips are frequently found in older systems.