3 Replies Latest reply on Dec 28, 2016 7:49 PM by gsns

    Spansion S98GL064NB0HI001

    jck_2217661

      Looking for the datasheet for  Flash/SRAM chip S98GL064NB0HI001.

         

      The closest match I could find is S98GL064NB0-007 and -008.

         

      In particular what is the Flash and SRAM access time for this component?  Is it also 90ns as in the 007 & 008 models?

        • 1. Re: Spansion S98GL064NB0HI001
          gsns

          Hi,

             

          we have checked our internal database and yes the access time of Flash and SRAM access time is same as 007 and 008 models.

             

          It is 90 ns Flash, 70 ns pSRAM/SRAM.

             

          Thanks,

             

          Krishna.

          • 2. Re: Spansion S98GL064NB0HI001
            jck_2217661

            Thank you.

               

            I was unable to find a spec sheet for the pSRAM component (SPG032D970R3R) with timing diagrams.

               

            The device is accessed through an external memory interface (EMI) with programmable setup, wait, and hold times.

               

            * C_SETUP field selects the setup time of the chip select assertion with respect to the write enable assertion.

               

            * C_LENGTH selects the number of wait states inserted in any read/write cycle.  The data phase of any read or write cycle will be equal to C_LENGTH +1 periods of the system clock.

               

            * C_HOLD field selects the hold time of the chip select assertion with respect to the write enable de-assertion. The actual hold time is C_HOLD +1 periods of the system clock.

               

            For the flash component running on a 64MHz clock (15.625ns/cycle), I figured from the timing diagrams a 2 cycle setup time + 4 cycle wait time for the external memory interface to reliably read/write the device.  0 hold.

               

            For the pSRAM component, I figured on the same 2 cycle setup time but only 3 cycle wait. 0 hold.

               

            Can you confirm if I read the timing correctly for the most efficient access?

            • 3. Re: Spansion S98GL064NB0HI001
              gsns

              Hi,  

                 

              I am attaching the datasheet of part SPG032D970R3R. Please refer the datasheet for the timing diagrams.

                 

              Thanks,

                 

              Krishna.