The X28C256J-25 is a 256K CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Intersil. It is a non-volatile memory device that can be electrically erased and reprogrammed, offering a versatile storage solution for applications requiring in-system updates and long-term data retention. This particular variant has an access time of 250ns.

Applications

• Embedded systems requiring non-volatile data storage
• Industrial control systems
• Instrumentation and data acquisition equipment
• Telecommunications equipment
• Aerospace and military applications
• Programmable logic controllers (PLCs)
• Robotics
• Data logging applications
• BIOS storage in older computer systems

Features

• High Density: 256Kbit (32K x 8) memory organization.
• Fast Access Time: 250ns read access time.
• Electrically Erasable: Allows for in-system reprogramming and updates.
• Low Power Consumption: CMOS technology for reduced power usage.
• Automatic Page Write Operation: Simplifies write operations.
• Data Protection: Provides features to prevent accidental data corruption.
• Endurance: High endurance, capable of withstanding many erase/write cycles.
• JEDEC Standard Pinout: Compatible with industry-standard EEPROM sockets.
• TTL Compatible: Inputs and outputs are TTL compatible.

Benefits

• Flexibility: Enables easy in-system updates and reprogramming, reducing the need for physical device replacement.
• Reliability: Non-volatile storage ensures data retention even when power is lost.
• Efficiency: Low power consumption makes it suitable for battery-powered applications.
• Cost-Effective: Offers a cost-efficient solution for non-volatile memory requirements.
• Ease of Integration: JEDEC standard pinout simplifies integration into existing systems.
• Data Integrity: Built-in data protection features prevent accidental data corruption, ensuring reliable data storage.

Additional Details

The X28C256J-25 operates from a single 5V power supply. It typically comes in a JEDEC standard 28-pin DIP (Dual In-Line Package). It supports both page write and byte write operations. The device includes features such as data polling and toggle bit, which allow the host system to determine when a write operation is complete. This EEPROM is a reliable solution for applications that demand non-volatile memory with the ability to be easily reprogrammed.