3 Replies Latest reply on Feb 7, 2019 11:14 PM by NaMo_1534561

    Status check by polling DQ3

    NaMo_1534561

      Hello,

       

      According to the data sheet of S29GL-T, there is a method of status check by polling using DQ3 when executing the sector erase command.

      Is this a common way?

      · Is it common specification of NorFlash made by Cypress?

      · Is it the specification specified by JEDEC? (Do other companies have the same specification?)

       

      MPN:S29GL01GT10TFI010

       

      Best Regards,

      Naoaki Morimoto

        • 1. Re: Status check by polling DQ3
          NaMo_1534561

          Hello,

           

          Customers are concerned with the man-power required to change from competiter's Flash to CY.

          Status polling using DQ 3 is also supported by other companies (Micron).

          However, I would like to know how this method can be used in common with any Flash memory like CFI.

           

          Best Regards,

          Naoaki Morimoto

          • 2. Re: Status check by polling DQ3
            JaeH_21

            Hi Naoaki,

             

            It has been a common specification of Cypress parallel NOR flash memory since flash memory technology was inherited from SPANSION (AMD + Fujitsu). As far as I know it is not specified by JEDEC, but other competitors including Micron have kept the same method with us due to having a compatibility.

             

            Best regards,

            Scott Heo

            • 3. Re: Status check by polling DQ3
              NaMo_1534561

              Hello Scott,

               

              Thank you for your answer.

              I understand that it has been common way of Cypress NOR Flash family since SPANSION(AMD + Fujitsu).

              But it is not common format of NOR Flash vendors.

               

              Best Regards,

              Naoaki Morimoto