71V2556SA100BGGI

Memory IC Overview

The 71V2556SA100BGGI is a 4.5 Mbit synchronous static random-access memory (SRAM) organized as 128K x 36. It operates with a 3.3V core supply and supports 2.5V I/O levels, functioning within a voltage range of 3.135V to 3.465V. The device features a maximum clock frequency of 100 MHz and an access time of 5 ns. It utilizes a parallel interface and is housed in a 119-pin PBGA package measuring 14x22 mm. Designed for industrial applications, it functions reliably between -40°C and +85°C.

Memory IC Feature Summary

• Zero Bus Turnaround (ZBT) architecture eliminates dead cycles during bus turnaround between read and write operations.
• Internally synchronized output buffer enable removes the requirement for external Output Enable (OE) control.
• Single Read/Write control pin simplifies interface logic compared to traditional SRAM designs.
• Positive clock-edge triggered registers for address, data, and control signals support fully pipelined applications.

Memory IC Applications

• High-performance embedded systems requiring fast data buffering
• Network infrastructure equipment utilizing ZBT technology
• Industrial control systems operating under wide temperature ranges

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to End-of-Life status. Confirm moisture sensitivity level handling requirements before assembly. Check for RoHS compliance variations across manufacturing dates. Validate package markings against official datasheet specifications to ensure correct revision identification.

Memory IC Selection Notes

Select this component for designs requiring 36-bit data width and synchronous pipelined performance. Ensure system power supplies accommodate the specified 3.3V core and 2.5V I/O requirements. Verify that the PCB layout supports the 119-pin PBGA footprint and thermal dissipation needs for industrial temperature operation.

Memory IC Part Context

This part belongs to the Renesas 71V2556 series of Zero Bus Turnaround synchronous SRAMs. It shares architectural similarities with other members like the 71V2556S150PFGI8 but differs in speed grade and package type. The series is characterized by its ability to eliminate bus turnaround latency, making it suitable for high-throughput memory interfaces.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include IDT71V2556SA100BGI. Verify electrical compatibility and pinout alignment before substitution. Note that alternative packages such as TQFP variants exist within the same family but require different footprints.