The HM628128ALT-5 is a high-performance, low-power 131,072-word x 8-bit static RAM (SRAM) manufactured by Hitachi. This SRAM is designed for applications demanding high-speed access times and minimal power consumption, making it suitable for embedded systems, portable devices, and other memory-intensive applications.

Applications

• Embedded Systems: Serves as program or data memory in various embedded microcontrollers and microprocessors.
• Portable Devices: Used in handheld devices like PDAs and portable instruments due to its low power consumption.
• Cache Memory: Integrated into cache memory systems to accelerate data access in computing devices.
• Data Logging Systems: Employed in systems requiring high-speed data capture and storage.
• Communication Equipment: Used in networking equipment for buffering and temporary data storage.

Features

• Fast Access Time: Features an access time of 55 ns, enabling quick data retrieval and storage.
• Low Power Consumption: Designed for minimal power usage, extending battery life in portable applications.
• Single 5V Power Supply: Operates using a single 5V power source, simplifying system integration.
• Fully Static Operation: No clock or refresh signals are needed, streamlining the control logic.
• Three-State Outputs: Incorporates three-state outputs for efficient memory expansion and bus interfacing.
• TTL-Compatible Inputs/Outputs: Ensures compatibility with standard TTL logic levels.
• Data Retention Capability: Retains data effectively, even when power is interrupted.

Benefits

• Enhanced System Performance: High-speed access times improve overall system responsiveness.
• Extended Battery Life: Reduced power consumption increases the operational lifespan of battery-powered devices.
• Simplified Integration: Single power supply requirement simplifies design and reduces cost.
• Reliable Data Storage: Static design guarantees data integrity without refresh cycles.
• Easy Interfacing: TTL-compatible I/O and three-state outputs facilitate seamless integration with other components.

Additional Details

The HM628128ALT-5 is typically available in a DIP (Dual In-line Package) or SOJ (Small Outline J-lead) package. Detailed electrical specifications, including operating and standby currents, can be found in the device datasheet. The operating temperature range usually spans from 0°C to 70°C. Input protection circuitry is included to safeguard against electrostatic discharge (ESD). This SRAM is suitable for a wide range of applications where high speed, low power, and reliable data storage are essential.