71V2556SA133BGI8

Overview

The 71V2556SA133BGI8 is a synchronous static random-access memory (SRAM) device manufactured by Renesas Electronics. It features a storage capacity of 4.5 Mbit organized as 128K x 36 bits. The component operates with a maximum clock frequency of 133 MHz and an access time of 4.2 ns. It utilizes a parallel interface and requires a supply voltage between 3.135 V and 3.465 V, with a maximum power current of 310 mA. The device is housed in a 119-pin PBGA package measuring 14x22 mm.

Feature Summary

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

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in network routers and switches
• Data storage in industrial automation control systems

Procurement Notes

Verify component authenticity through authorized distributors due to discontinuation status. Confirm package integrity upon receipt as moisture sensitivity level is 3. Check revision history against official PCN documents before integration into production lines.

Selection Notes

Select this part for applications requiring low-latency synchronous memory with ZBT efficiency. Ensure system design supports 3.3V core voltage and compatible I/O levels. Verify thermal management requirements for the PBGA package under maximum operating conditions.

Part Context

This component belongs to the 71V2556 family of synchronous SRAMs designed for high-performance embedded applications. It shares architectural similarities with other ZBT devices but offers specific timing characteristics optimized for 133 MHz operation within the 128K x 36 organization.

Replacement Considerations

Public confirmed substitute part numbers are not available in verified documentation. Consider evaluating equivalent ZBT SRAM devices from other manufacturers if sourcing is restricted due to end-of-life status.