7005S45J8

Overview

The Renesas Electronics Corporation 7005S45J8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It provides a total storage capacity of 64 kilobits, organized as 8K words by 8 bits. The component features a parallel interface with a maximum access time of 45 nanoseconds. It operates on a single 5-volt power supply, with a voltage range spanning from 4.5 volts to 5.5 volts. The device supports simultaneous independent reads and writes from either port. It is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount technology applications.

Feature Summary

• True dual-ported architecture enabling simultaneous independent read and write operations from both ports without conflict.
• On-chip hardware support for semaphore signaling and port arbitration logic to manage data integrity between master and slave configurations.
• Integrated interrupt flag functionality to signal status conditions to the connected processors.
• Automatic power-down feature controlled by chip enable inputs to minimize standby power consumption.

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• Data acquisition systems requiring concurrent port access
• Industrial control units utilizing master-slave dual-port configurations

Procurement Notes

Verify current availability status as this component may be subject to discontinuation or limited stock constraints. Confirm RoHS compliance requirements against specific project standards, noting that certain variants may not meet current environmental directives. Validate package dimensions and pinout compatibility during PCB layout finalization. Ensure thermal management strategies align with the specified operating temperature range for reliable long-term performance.

Selection Notes

Select this component when simultaneous bidirectional data transfer is required within a compact footprint. The 45-nanosecond access speed suits moderate-to-high frequency asynchronous interfaces. Consider the 68-pin PLCC package for legacy socketed designs or specific surface-mount constraints. Evaluate system power budgets against the specified supply voltage and current draw characteristics to ensure adequate regulation.

Part Context

This part belongs to the Renesas 7005 series of dual-port SRAMs, which are designed for versatile memory expansion and inter-processor communication. The series offers various access speeds and packaging options to accommodate different performance and physical design requirements. These devices are commonly used in applications demanding high reliability and deterministic timing for data exchange between multiple controllers.

Replacement Considerations

Publicly confirmed substitute part numbers include IDT7005S45J8. Verify functional equivalence regarding pinouts, electrical specifications, and package dimensions before integration. Cross-reference datasheets to ensure compatibility with existing system timing and voltage levels.