71V30VL55TFI

Overview

The Renesas Electronics Corporation 71V30VL55TFI is a high-speed, asynchronous dual-port static random-access memory (SRAM) IC. It provides an 8-kbit storage capacity organized as 1K x 8 bits. The device operates on a single 3.3V power supply with a specified access time of 55 ns. It supports parallel interface communication and is housed in a 64-pin TQFP package. The component is designed for industrial temperature ranges, ensuring reliable performance in demanding environments.

Feature Summary

• True dual-ported architecture enabling simultaneous independent access to the same memory location from both ports.
• On-chip port arbitration logic manages conflicts when both ports attempt to access the same address simultaneously.
• Asynchronous operation allows flexible timing control without reliance on a global clock signal.
• Integrated interrupt flags facilitate efficient port-to-port communication and status monitoring.

Applications

• High-speed data buffering in telecommunications equipment
• Real-time processing systems requiring concurrent read/write operations
• Industrial automation controllers needing reliable volatile memory
• Network infrastructure devices utilizing dual-port RAM for data handling

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +85°C) compared to commercial variants. Confirm RoHS compliance status through official documentation, as older batches may differ. Ensure the 64-TQFP package dimensions match your PCB footprint requirements. Check current production status, as this part number may be subject to obsolescence or lifecycle changes.

Selection Notes

Select this component when simultaneous independent access to shared memory is required without external arbitration hardware. The 55 ns speed suits moderate-frequency asynchronous interfaces. Consider the 3.3V supply constraint against system voltage levels. Evaluate the 64-pin TQFP package size against available board space. Compare against faster or denser alternatives if performance or capacity limits are exceeded.

Part Context

This component belongs to the Renesas 71V30 series of dual-port SRAMs, originally derived from IDT technology. The series offers various speed grades and temperature ranges. The 71V30VL55TFI specifically targets industrial applications with its extended temperature rating and standard 55 ns access time, fitting within the broader portfolio of high-reliability memory solutions.

Replacement Considerations

Direct substitutes include other 71V30 series variants with compatible pinouts, such as the 71V30S55TFG for commercial temperature ranges. Cross-reference with IDT equivalents like the IDT71V30L55TFI if sourcing from legacy inventories. Verify electrical compatibility and package dimensions before substitution.

FAQ

How does the 71V30VL55TFI handle simultaneous access requests?

It uses on-chip port arbitration logic to manage conflicts, allowing one port to proceed while the other waits or receives a busy signal.

What is the data retention capability during power loss?

The device retains data indefinitely as long as power is supplied; it does not have battery backup features inherent to the chip itself.

Is the 71V30VL55TFI TTL-compatible?

Yes, the input and output levels are compatible with TTL standards at the specified 3.3V operating voltage.