The X28C64PM-25 is an Electrically Erasable Programmable Read-Only Memory (EEPROM) chip manufactured by Xicor, Inc. (later acquired by Intersil, and subsequently Renesas). It's a non-volatile memory device that can be electrically erased and reprogrammed, offering flexibility and convenience compared to older ROM technologies. The "-25" indicates an access time of 250ns.

Applications:

• Embedded systems requiring non-volatile data storage
• Configuration storage for programmable devices
• Data logging applications
• Calibration data storage
• Robotics

Features:

• 64K (8K x 8) bit EEPROM
• Electrically erasable and programmable
• Fast access time (250 ns)
• Single 5V power supply
• TTL compatible inputs and outputs
• Self-timed write cycle
• Automatic page write operation

Benefits:

• Provides non-volatile data storage that persists even when power is removed
• Allows for in-system reprogramming, eliminating the need for physical replacement
• Offers a simple and reliable memory solution for a variety of applications
• Facilitates easy integration into existing systems with its standard interface

Technical Specifications:

• Memory Size: 64 Kbits (8 Kbytes)
• Organization: 8K x 8
• Access Time: 250 ns
• Supply Voltage: 5V ± 10%
• Operating Temperature: 0°C to +70°C (Commercial)
• Endurance: 10,000 write cycles (typically)
• Data Retention: 10 years (typically)
• Package: DIP (Plastic Molded)

The X28C64PM-25 offers a robust and reliable solution for non-volatile memory storage in a variety of embedded applications. Its electrical erasability and programmability, combined with its fast access time, make it a versatile choice for designs requiring flexible data storage.