71V2556S166PFGI

Overview

The 71V2556S166PFGI is a 3.3V CMOS synchronous static random-access memory organized as 128K x 36 bits, providing a total capacity of 4.5 Mbit. It operates with a maximum clock frequency of 166 MHz and features a typical access time of 3.8 ns. The device utilizes a parallel interface and is supplied within the voltage range of 3.135 V to 3.465 V. It is housed in a 100-pin TQFP package with dimensions of 20.0 mm by 14.0 mm and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Zero Bus Turnaround (ZBT) architecture eliminates dead bus cycles during read-to-write or write-to-read transitions.
• Synchronous pipelined design includes registers for data I/O, address, and control signals.
• Provides four cycles of data output for a single address input to maintain high throughput.

Applications

• High-speed digital signal processing systems
• Network infrastructure equipment requiring low-latency buffering
• Industrial automation controllers

Procurement Notes

Verify component authenticity through authorized Renesas distributors. Confirm RoHS compliance status and check for End-of-Life notifications, as discontinuance notices may affect long-term supply stability. Ensure moisture sensitivity level handling protocols are followed during storage and assembly.

Selection Notes

Select this part when ZBT technology is required to maximize bus efficiency in synchronous designs. Compare against other 71V2556 variants based on specific I/O voltage requirements and package type availability. Verify that the 166 MHz speed grade meets system timing constraints.

Part Context

This component belongs to the 71V2556 family of Zero Bus Turnaround SRAMs. It shares architectural similarities with other members like the 71V2556SA166BG8 but differs in package configuration and I/O voltage specifications. The series is designed for applications demanding high bandwidth and minimal turnaround latency.

Replacement Considerations

Check for direct pin-compatible substitutes within the same speed grade. Verify if alternative packages such as BGA options offer equivalent electrical characteristics for board layout flexibility.