SRAM Forum Discussions

The datasheet for the CY7C25632KV18 shows the maximum current (Idd) for Vdd but does not show the maximum current (Iddq) for Vddq. What is the maximum current draw for the Vddq supply. My current design supplies Vdd at 1.8V and Vddq at 1.5V and want to make sure the 1.5V Vddq regulator can supply enough current for the part.

Hi Cypress

Sorry, our layout team has some problem on creating layout pad

Could you provide the recommended PCB pad file to us? thank you

Although there’s Package Diagrams in the specification, but we prefer to follow your recommended data

Cpress number: CY14V101QS-SE108XIT

Dear Sirs,

There is an inquiry of this MPN for new project.

Is it OK for a new model promotion?

There is no Data Sheet on Cypress HP.

It is written "to contact Sales"

Does it mean "not recommended to a new design."?

Please advise us ,

Regards,

這顆本體右上腳有一個圓形沒有在规格定义里,请帮忙确认

Hello,

我們設計一個使用8顆QDR-II的Memory board。在設計LAYOUT方面參考AN4065 QDR-II Design Guide。但是文件上面沒有提到Data與address的Trace長度需要參考那個部分?

Clock signal 是差動訊號嗎?

是否有Layou的設計文件可以參考?

謝謝

Hi Cyperss

We looked at the CY62168EV30LL-45BVXI and CY62168G30-45BVXI product specifications on the Cypress website and it looks the same. Can you tell us the difference between CY62168EV30LL-45BVXI and CY62168G30-45BVXI? Thank you! !

Hi,

I think that the cause of SRAM's data bit inversion is soft error and power supply noise.

Are there any other factors that cause bit inversion?

If you know other possible factors, please provide us.

Regards,

My questions are regarding the CY7C1381KVE33 (flow through SRAM with ECC, 18Mbits):

- What is the failure rate of the CY7C1381KVE33? Please confirm it takes into account the probability for the ECC function to fail.
- Can Cypress provide a FMEDA (Failure Mode, Effect and Diagnostic Analysis)?
- Can Cypress provide a factory test coverage rate?
- Suppose that for some reason, the ECC mechanism fails in such a way that any stored data, even corrupted, is considered as good, and is consequenty NOT corrected.
Is such a failure possible?
- Is there any means for the application to check that the ECC function actually works?

Thanks a lot,

Frédéric.

Hi,

CY62148G30 has an ECC function.

Furthermore, This device has not ERR terminal.

What happens if multi-bit error occurs?

However, the data sheet has the following description.

--Datasheet P.1 ------------------------------------------------------------------------

Note1. This device does not support automatic write-back on error detection.

----------------------------------------------------------------------------------------------

We don't understand the meaning of the above.

What does this Note 1. mean?

Regards,