71V3556SA100BGGI

Memory IC Overview

The Renesas 71V3556SA100BGGI is a static random-access memory device organized as 128K x 36, providing a total storage capacity of 4 Mbit. It operates with a maximum clock frequency of 100 MHz and features an access time of 5 ns. The component utilizes a parallel interface and supports SDR (Single Data Rate) synchronous operation. Power supply requirements range from 3.135 V to 3.465 V, with a maximum power consumption of 255 mA. It is housed in a 119-pin PBGA package suitable for surface mount installation and functions within a temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Zero Bus Turnaround (ZBT) technology eliminates dead cycles between read and write operations.
• Fully pipelined architecture with internal synchronization for address and control signals.
• Supports four-word burst capability for interleaved or linear data transfer.
• Includes individual byte write control for precise data management.

Memory IC Applications

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

Memory IC Procurement Notes

This component is designated as End-of-Life (EOL). Manufacturers have issued discontinuance notifications indicating that production will cease. Availability is currently restricted or unavailable through standard distribution channels. Engineers should verify current stock status with authorized suppliers and initiate replacement planning immediately due to the confirmed obsolescence schedule.

Memory IC Selection Notes

Select this part only if legacy compatibility with 128K x 36 organization and 100 MHz speed is strictly required. Verify that the 119-pin PBGA footprint matches the existing PCB design. Consider thermal constraints given the 255 mA maximum current draw. Ensure the system voltage aligns with the specified 3.3V I/O and power supply ranges before integration.

Memory IC Part Context

The 71V3556SA100BGGI belongs to the Renesas 71V3556SA series of ZBT Synchronous SRAMs. This family is designed for applications demanding high-speed data buffering without bus turnaround delays. The 'SA' suffix typically denotes specific speed grades and package variations within the broader 71V3556 product line, distinguishing it from other variants like the 133 MHz or 150 MHz models.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the End-of-Life status, direct pin-to-pin replacements may require redesigning the board layout or selecting alternative memory technologies such as asynchronous SRAMs or DDR alternatives that fit the system constraints.