70V05S55J8

Memory IC Overview

The Renesas Electronics Corporation 70V05S55J8 is a dual-port static random access memory (SRAM) integrated circuit. It features a storage capacity of 64 kbit, organized as 8K x 8 bits. The device supports parallel interface communication with an asynchronous access time of 55 ns. It operates within a supply voltage range of 3.0 V to 3.6 V and is designed for surface mount installation in a 68-pin PLCC package. The component is classified as volatile memory suitable for high-speed data buffering applications.

Memory IC Feature Summary

• Dual-port architecture enabling independent simultaneous access by two processors
• Asynchronous operation for flexible system integration without clock synchronization
• Parallel interface supporting standard digital logic connections

Memory IC Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• Data storage in industrial control networks requiring dual-processor access

Memory IC Procurement Notes

Verify the exact suffix J8 against official Renesas documentation to confirm pinout and electrical specifications. Confirm RoHS compliance status as historical records may vary. Check for end-of-life notices or obsolescence warnings before procurement planning. Ensure compatibility with existing PCB footprints for 68-PLCC packages. Validate moisture sensitivity levels for reflow soldering processes.

Memory IC Selection Notes

Select this component when dual independent port access is required for 64-bit wide data structures. Compare against single-port alternatives if only one processor accesses the memory. Consider the 55 ns access speed relative to system clock requirements. Evaluate the 3.3 V operating voltage against available power rails. Assess the PLCC package constraints against board space and thermal management needs.

Memory IC Part Context

This part belongs to the Renesas 70V05 series of dual-port SRAMs. It shares architectural similarities with other members like the 70V25 series but differs in organization and voltage levels. The 70V05 series typically targets 3.3 V applications, distinguishing it from the 5 V 7025 series. It serves as a legacy solution for designs requiring non-volatile-free high-speed shared memory.

Memory IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.