7134LA45J

Overview

The Renesas Electronics Corporation 7134LA45J is a high-speed, asynchronous dual-port static random-access memory (SRAM) IC. It features a storage capacity of 32Kb organized as 4K x 8 bits. The device supports parallel interface operations with a maximum access time of 45 ns. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The component is housed in a 52-pin PLCC package measuring 19.13x19.13 mm and is designed for surface mount installation. It functions within an ambient temperature range of 0°C to 70°C.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location from either port without internal hardware arbitration.
• Fully asynchronous operation allowing flexible timing control for systems that cannot tolerate wait states or require external contention management.
• Automatic power-down feature controlled by chip enable signals, permitting low standby power consumption when the on-chip circuitry is inactive.

Applications

• Systems requiring simultaneous data access from two independent processors or controllers.
• High-speed buffering applications where zero wait-state operation is critical.
• External arbitration-based memory architectures handling concurrent read/write contention.
• Industrial control systems operating within standard commercial temperature ranges.

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance requirements as this specific variant may not meet current environmental standards. Validate package integrity and pin alignment against the 52-PLCC specification before integration. Ensure design compatibility with 4.5V to 5.5V supply rails and 45 ns timing constraints.

Selection Notes

Select this component for designs necessitating true dual-port functionality with asynchronous timing flexibility. Consider the 52-PLCC package constraint for PCB layout and thermal management. Evaluate system-level arbitration strategies since the device does not include internal conflict resolution mechanisms. Verify that the 0°C to 70°C operating range aligns with the intended application environment.

Part Context

The 7134LA45J belongs to the Renesas 7134 family of high-speed dual-port SRAMs. This series is engineered for applications demanding simultaneous access capabilities without internal hardware arbitration. The LA suffix indicates commercial temperature range operation and TTL-compatible 5V logic levels. The device supports battery backup operations for data retention during power loss scenarios.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The 7134SA45P and 7134LA70P share similar architectural features but differ in package type and access speed. Verify electrical and mechanical compatibility before considering alternative variants within the 7134 series.