71V2556SA166BG8

Overview

The 71V2556SA166BG8 is a 4.5 Mbit (128K x 36) synchronous ZBT SRAM manufactured by Renesas Electronics Corporation. It operates with a maximum clock frequency of 166 MHz and features a 3.5 ns access time. The device utilizes a parallel interface and requires a supply voltage between 3.135 V and 3.465 V. It is housed in a 119-pin PBGA package measuring 14x22 mm, designed for surface mount installation.

Feature Summary

• Synchronous Zero Bus Turnaround (ZBT) technology eliminates dead bus cycles during read-to-write or write-to-read transitions.
• Single 3.3 V core power supply with 2.5 V I/O compatibility for flexible system integration.
• High-speed pipelined architecture supporting data transfer rates up to 166 MHz.

Applications

• High-performance processor secondary cache systems
• Network infrastructure equipment requiring fast memory buffering
• Industrial control systems demanding reliable real-time data processing

Procurement Notes

This component has reached End-of-Life status as per discontinuance notifications dated January 3, 2024. Procurement is restricted to existing stock or surplus channels only. Verify RoHS compliance status, as the product does not meet current RoHS specifications. Confirm moisture sensitivity level (MSL 3) handling requirements before assembly to prevent package damage during soldering processes.

Selection Notes

Select this part when a 36-bit wide synchronous memory interface is required for high-throughput applications. Ensure the design supports 2.5 V I/O levels despite the 3.3 V core voltage. Consider the 119-PBGA footprint constraints and verify thermal management capabilities for the -40°C to +85°C operating range. Evaluate alternative components if lead-free compliance is mandatory for the target market.

Part Context

The 71V2556SA166BG8 belongs to the 71V2556 series of 3.3V Synchronous ZBT SRAMs. This family is characterized by its ability to maintain high bandwidth while reducing power consumption compared to traditional asynchronous memories. The 'SA' suffix typically denotes specific speed grades and package variations within the broader 71V2556 product line managed by Renesas.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation due to the product's discontinued status. Designers should consult official Renesas obsolescence notices for recommended transition strategies or contact authorized distributors for legacy support options.