71V30L55TFI8

Overview

The 71V30L55TFI8 is a dual-port static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It features an 8K-bit capacity organized as 1K x 8 bits with fully asynchronous parallel interfaces on both ports. The device operates on a single 3.3V supply and supports simultaneous independent access to any memory location. Key electrical parameters include a 55 ns access time, a voltage range of 3.0V to 3.6V, and operation within a temperature range of -40°C to +85°C. It is housed in a 64-pin Thin Quad Flat Package (TQFP).

Feature Summary

• True dual-ported architecture enabling simultaneous independent read/write operations from either port.
• On-chip arbitration logic manages concurrent access to the same memory location.
• Integrated interrupt flags facilitate direct communication between the two ports.

Applications

• High-speed data buffering in telecommunications equipment.
• FIFO buffers for network packet processing systems.
• Data logging applications requiring non-volatile battery backup support.

Procurement Notes

Verify component authenticity through authorized distributors due to potential legacy status. Confirm RoHS compliance requirements against specific project standards, as older batches may differ. Ensure moisture sensitivity level handling protocols are followed during assembly. Validate that the 64-TQFP footprint matches the target PCB design constraints.

Selection Notes

Select this component when simultaneous bidirectional data transfer is required without external arbitration hardware. The 55 ns speed suits moderate-frequency asynchronous interfaces. Consider the industrial temperature range (-40°C to +85°C) for harsh environments. Evaluate power consumption if battery backup is utilized, noting the 2V retention capability.

Part Context

This part belongs to the 71V30 series of high-speed dual-port SRAMs. It shares architectural similarities with other members like the 71V30L25 but offers slower access speeds. The 'L' suffix typically denotes low-power variants with battery backup retention, while 'I' indicates industrial temperature grading. It serves as a standalone memory solution replacing complex discrete logic implementations.

Replacement Considerations

Direct substitutes include the 71V30L25TFI8 for faster performance or 71V30S55TFI8 for commercial temperature ranges. Verify pin compatibility and electrical specifications before substitution. Legacy availability may require checking for end-of-life notices or alternative package options.