The X28C256TI-15 is a 256Kbit (32K x 8) Electrically Erasable PROM (EEPROM) manufactured by Xicor Inc. It's designed for non-volatile data storage in a variety of applications, offering in-system programmability and reprogrammability.

Applications

• Embedded Systems: Used for storing configuration data, calibration parameters, and firmware in embedded systems.
• Industrial Control Systems: Employed for storing program code and data in industrial control applications.
• Telecommunications Equipment: Integrated into telecommunications equipment for storing network configuration information.
• Instrumentation: Used in electronic test and measurement instruments for storing calibration data and instrument settings.

Features

• 256Kbit Capacity: Provides 256Kbits (32K x 8) of non-volatile memory.
• Electrically Erasable: Data can be erased and reprogrammed electrically, allowing for in-system updates.
• Fast Access Time: Offers a fast access time of 150ns (as indicated by '-15' in the part number).
• JEDEC Standard Pinout: Complies with the JEDEC standard pinout for easy replacement and compatibility.
• TTL Compatible: Compatible with TTL logic levels.
• Low Power Consumption: Designed for low power consumption, making it suitable for battery-powered applications.

Benefits

• Non-Volatile Storage: Retains data even when power is removed.
• In-System Programmability: Allows for convenient data updates without removing the device from the system.
• Fast Access Time: Enables quick data retrieval for improved system performance.
• Wide Operating Voltage: Operates over a wide voltage range, providing flexibility in power supply design.
• High Reliability: Offers high reliability and endurance for critical data storage.

Additional Details

The X28C256TI-15 requires a programming voltage for erase and write operations, typically around 12V. It supports both page write and byte write modes. The 'TI' in the part number often indicates a specific temperature range or industrial grade version. This EEPROM was commonly used in applications where occasional data updates were needed, offering a good balance of speed, capacity, and ease of use. It typically comes in a DIP (Dual In-line Package) or other through-hole packages for easy mounting on circuit boards. The access time of 150ns is a key parameter, defining how quickly the data can be read from the memory after the address is applied.