7005S15J

Overview

The Renesas Electronics Corporation 7005S15J is a high-speed, asynchronous dual-port static random-access memory (SRAM) component. It features a storage capacity of 64 kilobits organized as 8K by 8 bits. The device supports parallel interface communication with an access time of 15 nanoseconds. It operates on a single 5-volt power supply within a voltage range of 4.5 to 5.5 volts. The component is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount installation. It functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent reads and writes from two separate ports without conflict.
• Integrated hardware semaphore signaling logic facilitates automatic port arbitration and synchronization between master and slave operations.
• Asynchronous operation allows flexible timing control from either port, supporting both standalone and combined bus expansion configurations.

Applications

• High-speed data buffering in telecommunications equipment requiring low-latency packet handling.
• Master-slave processor systems utilizing shared memory for real-time control applications.
• Industrial automation controllers needing reliable volatile storage for program execution and data logging.

Procurement Notes

Verify the specific suffix J indicates the PLCC-68 package variant when sourcing replacements. Confirm RoHS compliance status as older manufacturing runs may not meet current environmental directives. Check for end-of-life notices or last-time-buy dates from authorized distributors. Ensure the supplier provides valid traceability documentation for critical industrial deployments.

Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration logic. Choose the 15ns speed grade for applications demanding faster cycle times than the 20ns or 35ns variants offer. Opt for the PLCC package if board space constraints favor surface-mount technology over through-hole PGA options.

Part Context

This part belongs to the IDT 7005 series of dual-port SRAMs, originally developed by Integrated Device Technology and later acquired by Renesas. The series is characterized by its true dual-port capability and built-in semaphore support, making it distinct from standard single-port memories. It serves as a bridge between different processing domains in complex embedded architectures.

Replacement Considerations

Compatible substitutes include the IDT7005S15J and other 7005 series variants with matching 15ns access times and PLCC-68 packaging. Verify pin compatibility and electrical specifications before swapping. Alternative packages like TQFP-64 require adapter solutions or redesign.