71V65703S85BQ

Overview

The 71V65703S85BQ is a 9Mb synchronous static random-access memory (SRAM) organized as 256K x 36. It utilizes Zero Bus Turnaround (ZBT) technology to eliminate dead bus cycles during read-write transitions. The device features a parallel interface with an access time of 8.5 ns and operates on a single 3.3V power supply within the range of 3.135V to 3.465V. It is housed in a 165-pin CABGA package and supports industrial temperature ranges.

Feature Summary

• Zero Bus Turnaround (ZBT) architecture eliminates dead bus cycles between read and write operations.
• Synchronous SDR design with address, data-in, and control signal registers for high-speed performance.
• Flow-through output configuration without output data registers.
• Supports burst mode providing four cycles of data for a single address.

Applications

• High-performance embedded systems requiring fast memory turnaround
• Network infrastructure equipment
• Industrial automation controllers
• Telecommunications base stations

Procurement Notes

Verify component authenticity through authorized channels due to potential obsolescence. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) prior to assembly. Check for specific suffix variations that may indicate different packaging or temperature grades. Ensure supply chain stability as this part number may be discontinued or subject to long lead times.

Selection Notes

Select this component for applications demanding low-latency memory access with minimal bus turnaround overhead. The 256K x 36 organization suits wide-data-path architectures. Ensure system voltage aligns with the 3.3V specification. Consider the 165-CABGA package constraints for PCB layout and thermal management compared to alternative pin-count packages.

Part Context

This SRAM belongs to the Renesas 71V65 series, designed for high-speed parallel memory applications. It integrates ZBT technology to optimize bus efficiency in synchronous systems. The device is part of a broader family offering various speeds and package options, maintaining compatibility with standard parallel interfaces while enhancing throughput through reduced wait states.

Replacement Considerations

Potential substitutes include 71V65703S85BQG and 71V65703S85BQGI. Verify pinout compatibility and electrical specifications before substitution. Note that some variants may differ in packaging or temperature range.

FAQ

What is the primary advantage of ZBT technology in this SRAM?

ZBT technology eliminates dead bus cycles when switching between read and write operations, significantly improving data throughput efficiency.

Does the 71V65703S85BQ have output data registers?

No, the outputs are flow-through, meaning there are no output data registers, which allows for faster access to stored data.