The X28C256PI is a 256K CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Intersil. It is designed for non-volatile data storage and offers in-system electrical erasability and reprogrammability, making it suitable for a variety of applications requiring flexible memory solutions.

Applications

• Embedded Systems: For storing configuration data, boot code, and other critical information.
• Industrial Control: In programmable logic controllers (PLCs) and other industrial automation equipment.
• Instrumentation: Data logging and storage in scientific and engineering instruments.
• Telecommunications: Configuration storage in network devices.
• Automotive Electronics: For storing calibration data and software updates.
• Aerospace Applications: Reliable data storage in demanding environments.
• Medical Devices: Storing patient data and device configuration.
• Smart Cards: For storing secure data and cryptographic keys.

Features

• Density: 256 Kbit (32K x 8) organization.
• Non-Volatile: Retains data without power.
• Electrically Erasable and Programmable: Allows in-system updates.
• CMOS Technology: Low power consumption.
• Page Mode Write: Simplifies write operations.
• Data Protection: Prevents accidental data corruption.
• High Endurance: Capable of withstanding a large number of erase/write cycles.
• JEDEC Standard Pinout: Facilitates easy integration.
• TTL Compatible: Interfaces with TTL logic levels.

Benefits

• Flexibility: In-system reprogrammability reduces downtime and maintenance costs.
• Reliability: Non-volatile storage ensures data integrity in power loss situations.
• Low Power: Suitable for battery-powered applications and energy-efficient systems.
• Ease of Use: Simple write operations and standard pinout simplify system design.
• Data Security: Data protection features enhance data integrity.
• Long Lifespan: High endurance ensures reliable operation over time.

Additional Details

The X28C256PI typically operates on a single 5V power supply. It often comes in a PDIP (Plastic Dual In-Line Package). The exact access time can vary depending on the specific variant, but it is generally fast enough for most embedded applications. The device includes features like data polling and toggle bit to signal the completion of write operations. The X28C256PI is a robust and versatile EEPROM suitable for a wide range of applications requiring non-volatile data storage and in-system programmability.