71V2556SA133BGG

Memory IC Overview

The 71V2556SA133BGG is a 4.5 Mbit synchronous static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It features a parallel interface with a data organization of 128K x 36 bits. The device operates at a maximum clock frequency of 133 MHz with an access time of 4.2 ns. It utilizes a 3.3V power supply ranging from 3.135V to 3.465V and employs a 119-pin PBGA package measuring 14x22 mm. The component supports single data rate (SDR) ZBT technology and functions within a commercial temperature range of 0°C to 70°C.

Memory IC Feature Summary

• Zero Bus Turnaround (ZBT) architecture eliminates dead cycles during bus turnaround between read and write operations.
• Fully pipelined design with internally synchronized output buffer enable, removing the need for external OE control.
• Supports four-word burst capability in either interleaved or linear modes for efficient data transfer.
• Includes individual byte write control pins (BW1-BW4) and three chip enables for flexible depth expansion.

Memory IC Applications

• High-speed digital signal processing systems requiring low-latency memory access
• Network infrastructure equipment utilizing parallel SRAM interfaces
• Industrial automation controllers needing reliable volatile storage

Memory IC Procurement Notes

Verify component authenticity through authorized channels as this part is officially discontinued. Confirm package integrity and moisture sensitivity level handling procedures prior to assembly. Cross-reference datasheet revisions to ensure compatibility with existing system designs. Check for valid replacement alternatives due to end-of-life status.

Memory IC Selection Notes

Select this component only if specific 133 MHz performance and 128K x 36 organization are required. Ensure voltage levels match the 3.3V core and 2.5V I/O specifications. Consider the 119-PBGA footprint constraints during PCB layout. Evaluate alternative parts if continuous supply is critical for long-term production.

Memory IC Part Context

This SRAM belongs to the 71V2556 family of Zero Bus Turnaround devices. It shares architectural similarities with other variants like the 71V2556S series but differs in speed grade and packaging. The SA suffix indicates specific speed and package characteristics distinct from standard versions.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: None identified.