The HM628128LPI-8 is a 131,072-word by 8-bit (128KB) static random-access memory (SRAM) device manufactured by Hitachi. It is designed for low-power applications requiring fast access times and non-volatility. This SRAM is commonly used in portable devices, battery-backed systems, and other applications where data retention is critical.

Applications:

• Portable Devices: Used in handheld computers, personal digital assistants (PDAs), and other portable electronic devices.
• Battery-Backed Systems: Employed in systems that require data retention during power outages, such as industrial controllers and medical equipment.
• Cache Memory: Used as cache memory in embedded systems and microcontrollers.
• Data Logging: Found in data loggers for storing sensor data and other information.
• Instrumentation: Used in test and measurement equipment for storing calibration data and settings.

Features:

• 128KB Capacity: Provides 131,072 bytes of storage.
• 8-bit Data Bus: Operates with an 8-bit data bus.
• Low Power Consumption: Designed for low-power operation, extending battery life in portable applications.
• Fast Access Time: Offers a fast access time of 8 ns, enabling high-speed operation.
• TTL Compatible I/O: Compatible with TTL logic levels, simplifying interfacing with other components.
• DIP Package: Available in a DIP (Dual In-Line Package) for easy prototyping and breadboarding.

Benefits:

• Non-Volatile Data Storage: Retains data even when power is removed.
• Low Power Consumption: Extends battery life in portable applications.
• Fast Access Time: Enables high-speed operation in demanding applications.
• Easy Integration: Simple to interface with microprocessors and microcontrollers.
• Reliable Operation: Proven architecture ensures reliable performance in various environments.

Relevant Additional Details:

The HM628128LPI-8 requires a 5V power supply. Detailed technical specifications, application notes, and timing diagrams are available from Hitachi.