Cypress Perform

Home > Support & Community
support.cypress.com     Bookmark and Share
Support & Community

Knowledge Base Article



Corruption in a particular location of nvSRAM even though WE# is pulled up to Vcc

Last Updated: 01/30/2012

Please explain the reason for corruption in a particular location of nvSRAM ( Typically 0x0000) even though WE# is pulled up to Vcc.

The need for a pull up resistance on the WE# of the nvSRAM is explained in the KB article: Pull up resistor on WE# control line of nvSRAM

However, certain controllers/FPGA may pull the I/O's low during its startup. As a result of this, the WE# may be pulled low by the controller/FPGA and the pull up resistance on the WE# may not be effective in ensuring a logic HIGH on the WE# pin.

In such a scenario, the customer must ensure that controller/FPGA should be configured to tri-state its pins during boot up phase.


Related Categories: Nonvolatile Products


Provide feedback on this article

Did this article help you solve your problem?

Yes

No

Maybe

Additional comments:

To protect your privacy, do not include contact information in your feedback.

 Help us improve by taking a brief survey
Sunset Owner: KXP; Secondary Owner: VWA; Sunset Date: 06/15/20
Spec No: None; Sunset Owner: KXP; Secondary Owner: VWA; Sunset Date: 06/15/20