FSMC access speed

[albertbu]

Posted on November 20, 2015 at 08:08

Hi

I need to configure the FSMC in an STM32F4  to the fastest possible read access. I am reading an external FIFO and I need to read it as fast as it is possible. What are the parameters that influence the access speed? I tried several ways but the best I could get was a meager 30M accesses per second. Could somebody help ?Thanks !  #memory-fsmc-fifo

[waclawek.jan]

Posted on November 20, 2015 at 12:17

Using DMA?

Post the relevant FSMC registers' content. JW

[megahercas6]

Posted on November 20, 2015 at 18:51

with DMA, I  can get 56MHz clock into SRAM ( SRAM is a bit faster) so that would mean 112Mbps.

With software it is a bit slower, i remember same number, around ~30MT/s with lowest timing with no errors