71V2556S133PFGI

Overview

The 71V2556S133PFGI is a 4.5 Mbit synchronous static random-access memory (SRAM) organized as 128K x 36 bits. It operates with a maximum clock frequency of 133 MHz and features an access time of 4.2 ns. The device utilizes a parallel interface and requires a supply voltage between 3.135 V and 3.465 V, with a maximum power consumption of 215 mA. It is housed in a 100-pin TQFP package suitable for surface mount installation and supports an operating temperature range from -40°C to +85°C.

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 control of the output enable signal.
• Single Read/Write control pin simplifies interface logic design.
• Positive clock-edge triggered registers for address, data, and control signals support fully pipelined applications.

Applications

• High-performance real-time engine systems
• Industrial equipment requiring fast memory access
• Network infrastructure components

Procurement Notes

This component has reached End-of-Life status and is no longer manufactured by Renesas Electronics Corporation. Verification of current availability through authorized distributors or secondary market suppliers is required. Designers must confirm that any sourced units are genuine and meet original specifications before integration into production systems.

Selection Notes

Select this part when a 133 MHz synchronous SRAM with ZBT technology is needed for 36-bit wide data paths. Ensure the system design accommodates the 3.3V core voltage and 2.5V I/O requirements. Verify that the 100-TQFP package fits the PCB layout constraints and thermal management plan for industrial temperature ranges.

Part Context

The 71V2556 series belongs to Renesas' high-performance synchronous SRAM portfolio, designed for applications demanding low latency and high throughput. This specific model represents the 133 MHz speed grade within the 4.5 Mbit density class, offering a balance of performance and pin count for complex embedded memory tasks.

Replacement Considerations

Officially documented substitutes include the 71V2556S150PFGI and 71V2556SA133BGG. These alternatives offer similar functionality but may differ in speed grade or package type, requiring schematic and footprint verification.