71V30S55TF

Overview

The 71V30S55TF is a high-speed 1K x 8 dual-port static RAM manufactured by Renesas Electronics. It features two independent ports with separate control, address, and I/O pins for asynchronous access. The device operates on a single 3.3V ±0.3V power supply and supports battery backup operation with 2V data retention. It includes on-chip port arbitration logic and interrupt flags for communication between ports. The component is housed in a 64-pin STQFP package and is designed for industrial temperature ranges.

Feature Summary

• True dual-ported memory cells allow simultaneous access of the same memory location
• On-chip port arbitration logic facilitates efficient data handling
• Interrupt flags enable direct port-to-port communication
• Fully asynchronous operation from either port ensures flexible integration

Applications

• Stand-alone 8-bit dual-port SRAM systems
• Industrial applications requiring asynchronous parallel interfaces
• Systems utilizing battery backup for data retention

Procurement Notes

Verify the specific suffix 'S' indicates commercial temperature range (0°C to +70°C) versus 'L' for industrial (-40°C to +85°C). Confirm RoHS compliance status as older variants may differ. Check moisture sensitivity level (MSL 3) requirements for storage and handling. Ensure the 64-TQFP footprint matches the target PCB design. Validate that the 3.3V supply voltage aligns with system power rails.

Selection Notes

Select this part when true dual-port capability with simultaneous access is required. Choose based on the 35ns or 55ns access time needs relative to system clock speeds. Consider the 64-pin TQFP package for surface-mount assembly constraints. Verify if the commercial temperature range suffices or if an industrial grade variant is necessary for environmental conditions.

Part Context

The 71V30 series comprises high-speed dual-port SRAMs designed for applications needing independent read/write access from two processors. This specific model represents the standard 3.3V version within the family, offering 8Kbit density. It serves as a bridge between different logic families due to TTL-compatible inputs.

Replacement Considerations

Direct substitutes include other 71V30 series variants such as 71V30L35TFGI8 for industrial temperature grades. Cross-reference pinouts and electrical characteristics carefully when considering upgrades or alternative packages.