跳转到主要内容

概览

描述

Support is limited to customers who have already adopted these products.

DDR II / II+ (Double Data Rate) SRAMs and QDR^(TM) II / II+ (Quad Data Rate) SRAMs are the ideal memory devices for next generation networking and communications systems. These ultra-fast devices can support high bandwidth systems that require memories capable of very high operating frequencies combined with low latencies and full cycle utilization. DDR SRAMs can provide double data rate (DDR) operation on each data pin in write or read cycles, thus the data is written or read twice every clock cycle. This provides for a significantly higher transfer rate than standard synchronous SRAM devices. In applications that require continuous read/write capability such as in look-up tables for network switches and routers, DDR SRAMs are an ideal solution. QDR SRAMs can provide double data rate (DDR) operation on each data pin through independently operated read and write ports, and can transfer four words of data on one clock cycle. This allows for bus contention to be virtually eliminated between the memory controller and the SRAM. The QDR SRAMs can support high end network switches, routers and other communication solutions. 。

产品对比

应用

文档

类型 文档标题 日期
数据手册 PDF 833 KB
产品变更通告 PDF 4.86 MB 日本語
宣传手册 PDF 1.79 MB
产品变更通告 PDF 3.74 MB 日本語
产品变更通告 PDF 1.46 MB 日本語
宣传手册 PDF 3.28 MB
6 项目

设计和开发

模型

ECAD 模块

点击产品选项表中的 CAD 模型链接,查找 SamacSys 中的原理图符号、PCB 焊盘布局和 3D CAD 模型。如果符号和模型不可用,可直接在 SamacSys 请求该符号或模型。

Diagram of ECAD Models

产品选项

当前筛选条件

支持

支持社区

支持社区

在线询问瑞萨电子工程社群的技术人员,快速获得技术支持。
浏览常见问题解答

常见问题

浏览我们的知识库,了解常见问题的解答。
提交工单

提交工单

需要咨询技术性问题或提供非公开信息吗?