1 Reply Latest reply on Sep 26, 2017 11:58 PM by gsns

    S25FL128S block protect

    adapt_x_2774881

      Hi,

       

           my product use nor flash S25FL128S , I want to implement the write protect fucntion.

       

           I already setted the status register to 0x14 (BP0-2 = 0b101), and setted configuration register to 0x28 (TBPROT = 1).

       

           The flash behave is flash be protected the address start from the top,  but I want protected address start from the bottom.

       

           Question:

           1.  How can i implement my idea,  flash be protected the address start from the bottom.

       

            2. you have example to me?

        • 1. Re: S25FL128S block protect
          gsns

          Hi,

           

          Please clarify the below queries..

          Can you please provide the full part number which you are using. Are you observing the same issue with any other device ? If possible send the image of the device showing the part marking.

          did you program TBPROT bit after performing any  program or erase operation ?

          TBPROT must not be programmed after programming or erasing is done in the main flash array.

           

          Thanks,

          Krishna.