CY7C1543V18-333BZI

Memory IC Overview

The CY7C1543V18-333BZI is a 72-Mbit QDR-II+ Synchronous Pipelined SRAM with a 4M x 18 organization. It operates at a maximum frequency of 333 MHz, utilizing a 2.0-cycle read latency and a 4-word burst architecture. The device features separate independent read and write data ports supporting concurrent transactions. It employs Double Data Rate (DDR) interfaces on both ports, transferring data at 666 MHz when clocked at 333 MHz. Power supplies include a core VDD of 1.8V ± 0.1V and IO VDDQ ranging from 1.4V to VDD.

Memory IC Feature Summary

• Separate independent read and write data ports enable concurrent transactions without bus turnaround.
• Double Data Rate (DDR) interfaces on both read and write ports maximize data throughput.
• Echo clocks (CQ and CQ) simplify data capture in high-speed systems.
• Valid data pin (QVLD) indicates valid output data edge-aligned with echo clocks.

Memory IC Applications

• High-bandwidth networking equipment
• Telecommunications infrastructure
• Data center storage controllers

Memory IC Procurement Notes

Verify the specific suffix 'BZI' against the manufacturer's current datasheet to confirm package type and lead-free status. Ensure the operating voltage range matches system requirements. Confirm availability as this component may be subject to lifecycle changes or obsolescence notices.

Memory IC Selection Notes

Select this part for applications requiring high bandwidth and low latency. The QDR-II+ architecture eliminates data contention by separating read and write ports. Consider the 165-Ball FBGA package dimensions for PCB layout. Verify impedance matching requirements using the ZQ pin configuration.

Memory IC Part Context

This component belongs to the Cypress/Infineon QDR-II+ SRAM family, designed for high-performance memory applications. It shares architectural similarities with other members like the CY7C1541V18 and CY7C1545V18 but differs in density and data width configurations.

Memory IC Replacement Considerations

Check for direct pin-compatible upgrades within the same QDR-II+ family. Verify electrical characteristics and timing parameters match the original design requirements before substitution.

Memory IC FAQ

How does the QDR-II+ architecture handle data contention?

It uses separate independent read and write data ports, completely eliminating the need for data bus turnaround and avoiding contention.

What is the function of the ZQ pin?

The ZQ pin is used for programmable impedance matching. An external resistor connects it to ground to tune the device outputs to the system data bus impedance.