The X28HC256DMB-12 is a high-performance 256K CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) from Xicor (later acquired by Intersil, and then Renesas). This memory device is designed for applications requiring non-volatile storage with fast access times and low power consumption and it is a military-grade component.

Applications

• Military and Aerospace Systems: Used for storing configuration data, boot code, and critical parameters in harsh environments.
• Embedded Systems: Employed in embedded controllers for storing parameters and calibration data where reliability is paramount.
• Industrial Control Systems: Utilized in industrial controllers for storing parameters and calibration data under extreme conditions.
• Instrumentation: Used in test and measurement equipment for storing calibration settings and data logs.

Features

• 256Kbit Memory Capacity: Provides ample storage for a wide range of applications.
• Fast Access Time: Offers quick data retrieval for high-performance applications.
• Low Power Consumption: Minimizes power dissipation, making it suitable for various devices.
• Electrically Erasable and Programmable: Allows for easy updating and reprogramming of stored data.
• CMOS Technology: Ensures high performance and low power operation.
• Military Temperature Range: Operates reliably in extreme temperature conditions.
• Enhanced Reliability: Designed and tested for high reliability in demanding applications.

Benefits

• Non-Volatile Storage: Retains data even when power is removed, ensuring data integrity.
• High Performance: Fast access times enable quick data retrieval, improving system performance.
• Easy Reprogramming: Electrically erasable and programmable features simplify updating and modifying stored data.
• Low Power Operation: Reduces power consumption, extending battery life in portable devices.
• Reliable Data Storage: Provides stable and reliable data storage for critical applications.
• Robust Performance: Operates reliably in extreme temperatures and harsh environments.

Additional Details

The X28HC256DMB-12 has an access time of 120ns, indicating the maximum time required to retrieve data from the memory. It typically operates from a 5V power supply and consumes minimal power during both read and write operations. The device is commonly available in a DIP (Dual In-line Package). The “MB” in the part number indicates it meets military specifications.

This EEPROM is well-suited for applications that require non-volatile storage with fast access times and reliable operation in demanding environments. The electrically erasable and programmable features make it easy to update and modify stored data as needed. It is essential to follow the manufacturer's guidelines for programming and erasing the EEPROM to ensure reliable operation.