The UPD28C64AG-15 is a 64Kbit CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by NEC. It provides non-volatile storage that can be electrically erased and reprogrammed. This allows for flexible and in-system updates of stored data.

Applications

• Embedded Systems: Storing boot code, configuration settings, and calibration data.
• Industrial Automation: Used in programmable logic controllers (PLCs) and other control systems for storing program data and parameters.
• Medical Devices: Storing calibration data and configuration settings in medical instruments.
• Telecommunications Equipment: Used in network devices for storing configuration information and firmware.
• Automotive Electronics: Storing engine control parameters and diagnostic information.

Features

• 64Kbit (8KB) Memory Capacity: Provides 64 kilobits of non-volatile storage.
• CMOS Technology: Offers low power consumption, ideal for battery-powered or energy-sensitive applications.
• Electrically Erasable and Programmable: Allows for in-system reprogramming without requiring UV light or special equipment.
• Fast Access Time (150ns): The "-15" likely refers to an access time of 150 nanoseconds, enabling quick data retrieval.
• Byte-Alterable: Allows individual bytes to be erased and reprogrammed independently.

Benefits

• In-System Reprogrammability: Allows for easy updates to stored data without removing the chip from the circuit board.
• Non-Volatile Storage: Retains data even when power is removed, ensuring data integrity.
• Low Power Consumption: CMOS technology minimizes power usage, extending battery life in portable devices.
• Reliable Data Storage: Provides stable and reliable data storage for critical information.

The UPD28C64AG-15 is well-suited for applications requiring non-volatile memory with in-system programmability and low power consumption. Detailed specifications, including operating voltage, programming characteristics, and package information, can be found in the official datasheet from NEC. The 150ns access time signifies its ability to perform quick read operations, making it suitable for performance-sensitive applications.