71V3556SA100BG

Memory IC Overview

The Renesas Electronics Corporation 71V3556SA100BG is a static random access memory component organized as 128K x 36, providing a total storage capacity of 4 Mbit. It operates with a maximum clock frequency of 100 MHz and features an access time of 5 ns. The device utilizes a parallel interface and functions as a synchronous SDR ZBT SRAM. Power supply requirements range from a minimum of 3.135 V to a maximum of 3.465 V, with a maximum power current of 255 mA. It supports surface mount installation in a PBGA-119 package and operates within a temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Synchronous Single Data Rate Zero Bus Turnaround architecture eliminates dead bus cycles during read-to-write or write-to-read transitions.
• Self-timed write cycle controlled by global write control and byte write enable signals for efficient data management.
• Power-down mode controlled by the ZZ input pin to minimize standby power consumption.

Memory IC Applications

• High-speed digital signal processing systems requiring fast memory turnaround
• Network infrastructure equipment utilizing parallel SRAM interfaces
• Industrial control applications operating within extended temperature ranges

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm package integrity and moisture sensitivity handling procedures before assembly. Review official discontinuation notices for long-term supply planning. Ensure compatibility with existing system voltage levels and thermal requirements. Validate datasheet specifications against current manufacturing revisions.

Memory IC Selection Notes

Select this model when a 128K x 36 organization with 5 ns access time is required. Consider the PBGA-119 package for surface mount integration. Verify that the 100 MHz synchronous operation aligns with system clock speeds. Ensure the 3.3V I/O level matches the host controller interface. Evaluate thermal performance within the specified industrial temperature range.

Memory IC Part Context

This component belongs to the 71V3556SA series of synchronous SRAM devices. It shares architectural similarities with other variants in the family but differs in speed grade and packaging. The SA suffix typically denotes specific speed and package configurations within the broader product line. Understanding the series context aids in identifying compatible alternatives or upgrades.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include IDT71V3556SA100BGGI and 71V3556SA100BG8. Verify pinout compatibility and electrical specifications before substitution. Check for any changes in package dimensions or thermal characteristics. Confirm that the replacement meets the same organizational and speed requirements.