7005SJ8

Overview

The Renesas Electronics Corporation 7005SJ8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a density of 64 kbit. The memory organization is configured as 8K x 8 bits. It operates on a single 5V power supply within a range of 4.5V to 5.5V. The component utilizes parallel interface technology and features true dual-ported memory cells that allow simultaneous independent access from either port. It supports full on-chip hardware semaphore signaling and interrupt flags for master/slave configurations. The device is available in surface-mount packages including the 68-pin PLCC.

Feature Summary

• True dual-ported architecture enabling simultaneous reads and writes from two independent ports without conflict.
• Integrated hardware support for semaphore signaling and interrupt flags to facilitate master/slave coordination.
• Automatic power-down feature controlled by chip enable inputs to minimize standby power consumption.
• TTL-compatible I/O levels allowing direct interfacing with standard logic families.

Applications

• High-speed data buffering in telecommunications equipment
• Master/slave dual-port memory systems for 16-bit or wider data buses
• Real-time signal processing applications requiring concurrent data access
• Industrial control systems utilizing asynchronous parallel interfaces

Procurement Notes

Verify current availability status as this component may be discontinued or subject to limited production runs. Confirm package type compatibility, specifically the 68-pin PLCC variant, against existing PCB footprints. Check for moisture sensitivity level requirements during storage and handling. Ensure voltage supply specifications align with system design constraints before integration.

Selection Notes

Select this component when simultaneous independent access to shared memory is required without external arbitration logic. The 7005SJ8 is suitable for designs needing fast asynchronous operation with integrated flow control mechanisms. Consider the specific access time variants available within the 7005 family to match system timing requirements. Evaluate thermal performance and operating temperature ranges relative to the intended application environment.

Part Context

The 7005 series represents a line of high-performance dual-port SRAMs designed for versatile memory sharing applications. Manufactured by Renesas Electronics, these devices bridge the gap between standalone RAM and complex shared memory controllers. The SJ8 suffix typically denotes specific speed grades and packaging options within the broader 7005 product family, offering flexibility for various industrial and commercial electronic designs.

Replacement Considerations

Direct replacements include other members of the 7005S20 or 7005S15 series with matching pinouts and electrical characteristics. Verify functional equivalence regarding semaphore logic and access times when substituting with different speed grades. Cross-reference with IDT-branded equivalents if sourcing from alternative distributors, ensuring package dimensions remain compatible.