SDRAM For STM32L496ZG

As far as I'm aware this L4 (and others) only support Static Memories, not Dynamic Ones. I'd expect it could support PSRAM (Pseudo-SRAM)

Perhaps something like

https://www.mouser.com/ProductDetail/Alliance-Memory/AS1C4M16PL-70BIN/?qs=byeeYqUIh0OpeMturP0hzg%3D%3D

You shouldn't need to load an entire file into memory for the purpose of transiting the data to an external frame buffer on a different device.

Thank you for your response

I want the SDRAM For Drive the 1872*1404 Resolution Display(In a display i want to display different 10 to 12 image one by one), if you have any suggestion that is very helpful for me.

Yes We have Display Controller.

Yes that is the SW Problem that is why i want to use the SDRAM for store the image C Array .

okay Thank you for your suggestion

If you used QuadSPI NOR Flash you could store images in a linear memory address space directly accessible by the processor.

Okay Thanks

My Code is look like this for read the image data from sd card , i have stored the image hex file into SD Card and STM32 Variable is BYTE then the image hex file read in STM32 BYTE format.

i am dividing the 1872*1402 resolution image into three to Four File but when i call the f_read API then it is taking 4 to 5 sec for read the 180000 character, anything suggest you how can i reduce the read time from sd card then it is very faster.

     fres = f_mount(&FatFs, "0:", 1); //1=mount now

   if (fres != FR_OK)

   {

      printf("f_mount error ");

      while(1);

   }

   fres = f_open(&fil, "image.hex",FA_READ); 

   if(fres == FR_OK)

{

printf("I was able to open file\r\n");

} else

{

printf("f_open error (%i)\r\n", fres);

}

int filelenght = f_size(&fil);

BYTE readBuf[180000];

f_read(&fil,readBuf,180000,180000);

IT8951_LoadImage2bpp(0,0,readBuf,320,300); // width and height is different not 320 and 300

f_close (&fil);

fres = f_open(&fil, "image1.hex",FA_READ);

readBuf[180000];

f_read(&fil,readBuf,180000,180000);

if(fres == FR_OK)

{

printf("I was able to open file\r\n");

} else

{

printf("f_open error (%i)\r\n", fres);

}

f_read(&fil,readBuf,180000,180000);

IT8951_LoadImage2bpp(0,0,readBuf,320,300); // width and height is different not 320 and 300

IT8951_FullUpdate();