Jun 03, 2020
12:46 AM
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Jun 03, 2020
12:46 AM
咨询下CY7C2263/2265可以通过两片并联拓展位宽嘛?并联之后读写速率是否会有影响?还能发挥出最大的速率嘛?谢谢!
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Jun 04, 2020
10:50 PM
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Jun 04, 2020
10:50 PM
5 Replies
Jun 03, 2020
07:15 PM
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Jun 03, 2020
07:15 PM
可以的,数据手册 https://www.cypress.com/file/45696/download 也提供一个拓展位宽应用的示意图如下:
性能上和用单片没什么区别,但是一些设计细节要多注意,例如信号阻抗匹配等。做设计的时候参考一下有关应用笔记。例如:
Roy Liu
Jun 03, 2020
11:25 PM
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Jun 03, 2020
11:25 PM
好的,感谢,顺便问下CY7C4142KV13-933FCXI是否也可以并联拓宽位宽使用?另外QDR SRAM有144Mbit以上容量的推荐下嘛?
Jun 04, 2020
10:49 PM
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Jun 04, 2020
10:49 PM
是的,可以做深度和宽度拓展,QDR-IV Design Guide https://www.cypress.com/file/46581/download 有例子:
https://www.cypress.com/product-roadmaps/cypress-nonvolatile-ram-roadmap
没有144Mbit以上的了 参考https://www.cypress.com/product-roadmaps/cypress-nonvolatile-ram-roadmap
Roy Liu
Jun 04, 2020
01:35 AM
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Jun 04, 2020
01:35 AM
另外麻烦问下CY7C2663/2665看手册也是可以并联使用的把?
Jun 04, 2020
10:50 PM
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Jun 04, 2020
10:50 PM
是的,CY7C2663/2665也可以。
Roy Liu