71V256SA15YG

Overview

The Renesas Electronics Corporation 71V256SA15YG is a 3.3V CMOS Asynchronous Static Random Access Memory (SRAM) organized as 32K x 8, providing a total storage capacity of 256 Kbit. It features a parallel interface with a maximum access time of 15 ns. The device operates on a single 3.3V power supply, with voltage limits ranging from 4.5 V to 5.5 V in some documentation contexts, though officially specified as 3V to 3.6V. It supports an industrial temperature range from -40°C to +85°C and is housed in a 28-pin Small Outline J-Lead (SOJ) surface-mount package.

Feature Summary

• Utilizes fully static asynchronous circuitry that requires no clocks or refresh cycles for operation.
• Features very low standby power consumption, ensuring extended battery life when the chip select is at a CMOS level.
• Provides LVTTL-compatible inputs and outputs for direct interfacing with logic systems.

Applications

• High-performance processor secondary cache memory
• Battery-backed data retention systems
• Industrial control system memory buffers

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm RoHS compliance and moisture sensitivity level (MSL 3) before handling. Check for specific manufacturing date codes and ensure proper ESD protection during storage and installation to maintain reliability.

Selection Notes

Select this component for applications requiring fast asynchronous access without clock synchronization. Ensure the design accommodates the 28-pin SOJ footprint and 3.3V logic levels. Consider the limited availability and obsolescence status when planning long-term production lifecycles.

Part Context

This part belongs to the 71V256SA family of 3.3V SRAMs. It shares architectural similarities with other variants like the 71V256SA15YGI8 but differs in packaging and reel specifications. The series is designed for commercial and industrial environments offering reliable non-volatile-like performance through low-power standby modes.

Replacement Considerations

The 71V256SA15YGI8 is a documented similar alternative within the same product line. Verify pin compatibility and electrical characteristics against the original datasheet before substitution.