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Visitor II
January 29, 2024
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STM32G473/4 FMC/FSMC feature, pin called FMC_NL and FMC_NADV in datasheet DS12712 rev 5

  • January 29, 2024
  • 1 reply
  • 1639 views

I'm working on migrating a design from STM32F405 series to STM32G473 series, both LQFP100 package, both use FSMC for access to external SRAM (in multiplexed mode; I have separate address latches clocked from FMC_NADV capturing A0..A15 from D0..D15.)

When verifying pin-by-pin alternate function definitions, I encountered FMC_NL (assigned through PB7) where I expected to find FMC_NADV (assigned through PB7.)

On further checking, I see that datasheet for G473 (DS12712 rev 5 is the version I downloaded and am referencing) cites FMC_NL only in the pin/alternate function definitions, and FMC_NADV in the timing diagrams.

The reference manual (RM0440) doesn't appear to site either pin name.

Is reference FMC_NL in the pin alternate function definitions to be taken as a typo which should read FMC_NADV?

Thank you

 

    This topic has been closed for replies.
    Best answer by FBL

    Hello @wb0gaz 

    It is already mentioned in the reference manual figure 52. FMC_NL (or NADV) 

    FBelaid_0-1706604392318.png

    I agree, it should have been explicitly detailed in the datasheet.

    1 reply

    FBLAnswer
    Technical Moderator
    January 30, 2024

    Hello @wb0gaz 

    It is already mentioned in the reference manual figure 52. FMC_NL (or NADV) 

    FBelaid_0-1706604392318.png

    I agree, it should have been explicitly detailed in the datasheet.