Bit width of the SDRAM on STM32F439 MCU

[ivandevel]

Posted on May 08, 2014 at 14:37

Hello! Is there any goal in use a 32 bit SDRAM memory VS the 16 bit SDRAM memory on STM32F439 device? I want to transfer a 30 fps video from DCMI to 4.3 LCD. Wich SDRAM will be faster? 16 or 32 bit?

[Tesla DeLorean]

Posted on May 08, 2014 at 15:17

4.3 LCD

That doesn't really impart a resolution, which is what would be critical here. You'd want to look at the SDRAM controller implementation, and the depth of the buffers on it, if nothing else the 32-bit would double the burst bandwidth over a 16-bit part.