The X28C256DMB-12 is a 256K EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Xicor Inc. It provides non-volatile storage, retaining data even when power is off, and allows for electrical erasure and reprogramming, making it suitable for applications requiring frequent data updates or modifications. This EEPROM is often used in systems where configuration data, calibration parameters, or other critical information needs to be stored reliably.

Applications

• Embedded Systems: Storing firmware, configuration settings, and calibration data.
• Industrial Control Systems: Storing program code, operating parameters, and historical data.
• Data Acquisition Systems: Storing measurement data and calibration coefficients.
• Telecommunications Equipment: Storing network configuration and user profiles.
• Aerospace Systems: Storing critical flight parameters and system configuration.

Features

• Memory Size: 256K bits (32KB) of non-volatile memory.
• Parallel Interface: Uses a parallel interface for fast data access.
• Fast Access Time: Offers a fast access time of 120ns (as indicated by the -12 in the part number).
• Low Power Consumption: Designed for low power operation.
• Write Protection: Includes write protection features to prevent accidental data corruption.

Benefits

• Non-Volatile Storage: Retains data even when power is removed, ensuring data integrity.
• Fast Data Access: The parallel interface provides fast data read and write operations.
• Easy Reprogramming: Allows for electrical erasure and reprogramming, simplifying updates.
• Reliable Data Storage: Offers reliable data storage for critical system parameters.
• Low Power Consumption: Reduces power consumption in embedded systems.

Additional Details

The X28C256DMB-12 EEPROM utilizes a parallel interface, allowing for high-speed data transfer. The device typically operates with a 5V power supply and includes features such as output enable (OE) and write enable (WE) control signals to manage data access. The fast access time ensures that data can be read and written quickly, which is crucial in real-time applications. The write protection feature prevents accidental data corruption during system operation.

Xicor Inc. (now part of Intersil, which is now part of Renesas) was a leading provider of non-volatile memory solutions, including EEPROMs, flash memory, and other specialized memory devices. Their products were widely used in various industries, including automotive, industrial, and telecommunications.