71V2556SA100BG

Memory IC Overview

The 71V2556SA100BGI is a 4.5 Mbit synchronous SRAM organized as 128K x 36, manufactured by Renesas Electronics Corporation. It operates with a 3.3V core supply and 2.5V I/O supply, supporting a maximum clock frequency of 100 MHz with a 5 ns access time. The device utilizes Zero Bus Turnaround (ZBT) technology to eliminate dead bus cycles during read/write transitions. It is housed in a 119-pin PBGA package measuring 14x22 mm and supports an operating temperature range from -40°C to +85°C.

Memory IC Feature Summary

• Zero Bus Turnaround (ZBT) architecture eliminates dead bus cycles between read and write operations.
• Synchronous pipelined design provides four cycles of data for a single address presentation.
• Dual voltage operation with 3.3V core and 2.5V I/O supplies.
• Optional boundary scan JTAG interface compliant with IEEE 1149.1.

Memory IC Applications

• High-performance real-time processing systems requiring fast memory turnaround.
• Industrial equipment control units needing reliable synchronous memory.
• Embedded systems utilizing parallel interface architectures.

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance requirements as the part may not meet current standards. Validate package integrity upon receipt, ensuring no damage to the 119-pin BGA substrate. Check moisture sensitivity level handling procedures before soldering.

Memory IC Selection Notes

Select this component for applications requiring high-speed synchronous memory with minimal bus turnaround latency. Ensure system design accommodates 3.3V core and 2.5V I/O power domains. Verify PCB layout compatibility with the 119-PBGA footprint. Consider alternative ZBT SRAMs if lead-free or RoHS-compliant versions are mandatory for the target market.

Memory IC Part Context

This part belongs to the 71V2556 series of ZBT synchronous SRAMs. It shares architectural similarities with other variants like the 71V2556S150PFGI but differs in speed grade and package type. The series is designed for parallel interface applications where bus efficiency is critical. Renesas continues to support the broader family despite individual model discontinuations.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: IDT71V2556SA100BGI. Verify pinout and electrical specifications match exactly before substitution.