The DQ28C64-250 is a CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by SEEQ Technology. This memory chip is designed for non-volatile storage of data, meaning it retains the stored information even when power is removed. It's commonly used in applications requiring persistent data storage, such as embedded systems, industrial equipment, and data logging devices.

Applications

• Embedded Systems: Storing configuration data, calibration parameters, and program code in embedded systems.
• Industrial Equipment: Storing machine settings, process parameters, and historical data in industrial controllers.
• Data Logging: Recording sensor data, event logs, and system diagnostics in data logging applications.
• Instrumentation: Storing calibration data and measurement settings in instruments.
• Consumer Electronics: Storing user settings and configuration data in consumer electronics devices.

Features

• EEPROM Technology: Electrically Erasable Programmable Read-Only Memory for non-volatile data storage.
• Capacity: 64 Kbit (8K x 8) memory capacity.
• Access Time: 250ns access time, which determines the speed at which data can be read from the memory.
• Operating Voltage: Typically operates at a 5V power supply.
• Endurance: Offers a specified number of write/erase cycles (e.g., 10,000 cycles).
• Data Retention: Capable of retaining data for a specified period (e.g., 10 years).
• Package: Available in a DIP (Dual In-line Package).

Benefits

• Non-Volatile Storage: Retains data even when power is removed.
• Electrically Erasable: Can be erased and reprogrammed electrically, allowing for in-system updates.
• Reliable Data Storage: Provides reliable data storage for critical information.
• Easy Integration: Compatible with standard microprocessor and microcontroller interfaces.
• Compact Size: Small package size allows for use in space-constrained applications.

Additional Details

The DQ28C64-250 operates with a single 5V power supply. It requires specific timing signals for read, write, and erase operations. Proper handling and storage are essential to prevent damage to the device. The datasheet provides detailed information on timing parameters, electrical characteristics, and application notes. It is important to verify the exact specifications and pinout for a specific package type.