7130SA35JI8

Memory IC Overview

The Renesas Electronics Corporation 7130SA35JI8 is an 8Kbit (1K x 8) asynchronous dual-port static RAM. It features a parallel interface with a 35 ns access time and write cycle time. The device operates on a single 5V ±10% power supply within a voltage range of 4.5V to 5.5V. It is housed in a 52-PLCC package with dimensions of 19.13x19.13 mm. The component supports surface mount installation and functions within a commercial temperature range of 0°C to 70°C.

Memory IC Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from both ports without conflict.
• Integrated port arbitration logic manages bus contention, providing BUSY output flags and INT flags for efficient port-to-port communication.
• Fully asynchronous operation enables flexible timing control from either port, supporting automatic power-down modes controlled by chip enable signals.

Memory IC Applications

• Stand-alone 8-bit dual-port RAM systems
• Master dual-port RAM configurations paired with slave devices for wider word widths
• High-speed data buffering in asynchronous interfaces

Memory IC Procurement Notes

Verify RoHS compliance status as historical records indicate non-compliance for this specific variant. Confirm lead times and availability through authorized distributors, noting that production status may vary. Ensure the 52-PLCC package matches your PCB footprint requirements. Validate that the 0°C to 70°C operating range suits your environmental conditions. Check for any recent product change notices affecting pinout or electrical characteristics.

Memory IC Selection Notes

Select this component when true simultaneous access to shared memory is required without external arbitration logic. The 35 ns speed is suitable for moderate-speed asynchronous applications. Consider the 52-PLCC package if space constraints allow for larger footprints compared to QFP options. Ensure the system design accommodates the TTL-compatible 5V logic levels and single-supply requirement.

Memory IC Part Context

This part belongs to the 7130SA series of high-speed dual-port SRAMs. It serves as a 'MASTER' device in systems requiring expanded word widths when combined with compatible 'SLAVE' parts. The architecture eliminates the need for discrete logic for basic dual-port operations, simplifying board design and reducing component count in memory-intensive applications.

Memory IC Replacement Considerations

Check for direct substitutes within the 7130SA family with different access speeds or packages. Verify compatibility with 7140SA slave devices if expanding word width. Confirm pinout and electrical specifications match before substitution.

Memory IC FAQ

Can both ports access the same memory address simultaneously?

Yes, the 7130SA35JI8 features true dual-ported memory cells that allow simultaneous access to the same location, managed by on-chip arbitration logic.

What is the power supply requirement for this IC?

The device requires a single 5V ±10% power supply, operating between 4.5V and 5.5V.