71V3556SA100BQI

Overview

The 71V3556SA100BQI is a synchronous Single Data Rate Zero Bus Turnaround (ZBT) Static Random Access Memory integrated circuit manufactured by Renesas Electronics. It provides a total storage capacity of 4.5 Mbit, organized as 128K words by 36 bits. The device supports a maximum clock frequency of 100 MHz with a typical access time of 5 ns. It operates on a core supply voltage ranging from 3.135 V to 3.465 V and utilizes a 165-pin CABGA package measuring 13x15 mm. The component is designed for surface mount installation and functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Synchronous ZBT architecture eliminates dead bus cycles during read-to-write or write-to-read transitions.
• Pipelined data path allows four cycles of data output for a single address input.
• Integrated registers for data I/O, address, and control signals enhance system performance.

Applications

• High-speed digital signal processing systems
• Network infrastructure equipment requiring low-latency buffering
• Industrial automation controllers

Procurement Notes

Verify the specific suffix BQI against current manufacturer documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status as sources indicate non-compliance. Check for End-of-Life notifications, as discontinuation notices are present in public records. Ensure design-in compatibility with existing PCB footprints for the 165-CABGA package before procurement.

Selection Notes

Select this component when a 36-bit wide memory interface is required for parallel data buses. The 100 MHz speed grade suits applications needing moderate throughput with deterministic latency. Consider the industrial temperature range if operating in harsh environments. Evaluate power consumption specifications relative to system thermal constraints.

Part Context

This part belongs to the 71V3556 family of synchronous SRAMs. It shares architectural similarities with other members like the 71V3556SA100BQ8, differing primarily in packaging and commercial versus industrial temperature ratings. The family is characterized by its ZBT technology, which optimizes bus turnaround times compared to traditional asynchronous or standard synchronous memories.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify cross-references with official Renesas documentation or authorized distributors for equivalent components.