The X28C64DM-25 is a 64K EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Xicor Inc. This memory device is organized as 8192 x 8 bits and features a fast access time of 250ns. It's designed for applications requiring non-volatile storage with in-system programmability and is commonly used in embedded systems, industrial control equipment, and data logging devices.

Applications

• Embedded Systems: Used for storing configuration data, firmware, and calibration parameters in embedded systems.
• Industrial Control Equipment: Employed in industrial control systems for storing program code and operating parameters.
• Data Logging Devices: Utilized in data logging applications to store sensor readings and other data.
• Telecommunications Equipment: Integrated into telecommunications devices for storing network configuration data.
• Medical Devices: Found in medical equipment for storing patient data and device settings.

Features

• 64K (8192 x 8) EEPROM: Provides non-volatile storage with in-system programmability.
• Fast Access Time: Offers a typical access time of 250ns.
• Self-Timed Write Cycle: Simplifies write operations and reduces external component count.
• Automatic Page Write: Allows for efficient writing of multiple bytes in a single operation.
• Data Polling: Provides a mechanism to detect the completion of a write cycle.
• TTL Compatible Inputs and Outputs: Ensures compatibility with standard TTL logic circuits.

Benefits

• Non-Volatile Storage: Retains data even when power is removed, ensuring data integrity.
• In-System Programmability: Allows for easy updating of stored data without removing the device from the system.
• Fast Access Time: Enables rapid data storage and retrieval, improving system performance.
• Simplified Write Operations: Self-timed write cycle simplifies programming and reduces development time.
• Reliable Performance: Offers stable and dependable operation in various environments.

Additional Details

The X28C64DM-25 is typically available in a DIP (Dual In-line Package). It requires a single 5V power supply for operation. The device supports a limited number of write cycles, typically in the range of 10,000 cycles per byte. Proper decoupling and noise filtering are essential for reliable operation. This EEPROM is suitable for applications requiring frequent data updates and long-term storage.