71V2556S100PFGI

Memory IC Overview

The 71V2556S100PFGI is a 4.5 Mbit synchronous static random-access memory (SRAM) integrated circuit 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 100 MHz and provides an access time of 5 ns. It utilizes a 3.3 V core supply voltage ranging from 3.135 V to 3.465 V and supports 2.5 V I/O levels. The component is housed in a 100-pin Thin Quad Flat Package (TQFP) with dimensions of 14x14 mm. It is designed for surface mount installation and functions within a commercial temperature range of 0°C to +70°C.

Memory IC Feature Summary

• Zero Bus Turnaround (ZBT) architecture eliminates dead bus cycles during read-to-write or write-to-read transitions, ensuring continuous high-speed data throughput.
• Synchronous Single Data Rate (SDR) pipelined operation allows four cycles of data output for a single address input, optimizing system efficiency.
• Integrated registers for data I/O, address, and control signals facilitate precise timing synchronization and reliable data handling.

Memory IC Applications

• High-performance embedded systems requiring fast data buffering
• Network infrastructure equipment demanding low-latency memory access
• Industrial automation controllers utilizing ZBT SRAM interfaces

Memory IC Procurement Notes

Verify the specific suffix PFGI against official Renesas documentation to confirm the 100-pin TQFP package and commercial temperature grade. Confirm RoHS compliance status as it varies by manufacturing date and region. Check for End-of-Life notices, as this part number may be discontinued or subject to production change notifications. Ensure the 2.5V I/O requirement matches the target system's logic levels before procurement.

Memory IC Selection Notes

Select this component when a 36-bit wide data path is required for parallel processing applications. The 100 MHz speed and 5 ns access time suit designs needing moderate-high bandwidth without complex asynchronous timing. Verify that the PCB layout can accommodate the 100-pin TQFP footprint. Consider the 2.5V I/O constraint if interfacing with 3.3V-only logic, necessitating level shifting or compatible drivers.

Memory IC Part Context

This device belongs to the 71V2556 family of Zero Bus Turnaround SRAMs. It shares architectural similarities with other variants like the 71V2556S150PFGI but differs in clock speed and access time specifications. The family is characterized by its pipelined synchronous design and 36-bit word width, targeting applications where bus turnaround latency is a critical performance bottleneck.

Memory IC Replacement Considerations

The 71V2556S133PFGI is a documented similar alternative within the same family, offering higher speed capabilities. Verify pin compatibility and electrical parameter alignment before substitution.