Skip to main content
O
ov_it
Explorer II
May 1, 2025
Solved

STM32N6 SDRAM reference design?

  • May 1, 2025
  • 2 replies
  • 626 views

Greetings,

We're a small team designing a board around the STM32N6 and need a large external memory (e.g. 64MB of SDRAM). Due to the complexity of routing and configuring timings I wonder if there exists a reference design for such a circuit, or at least for another MCU that's sufficiently similar that we can use it as a starting point. Any guidance would be very much appreciated.

Regards,

OV

Best answer by exarian

Hey @ov_it 

Here is another STM32N6 specific design from the DK reference design, using the HEXASPI.

exarian_0-1746167632106.png

To RAM:

exarian_2-1746167890265.png

To STM32N6:

exarian_1-1746167854851.png

Ref: https://www.st.com/resource/en/schematic_pack/mb1939-n6570-c02-schematic.pdf

2 replies

TDK
TDK
Super User
May 1, 2025

Here's 64 MB SDRAM routing on an STM32F4 chip. Chip family doesn't change much here, signals are the same.

https://www.st.com/resource/en/schematic_pack/mb1075-f429i-e01_schematic.pdf

TDK_0-1746104277139.png

 

"If you feel a post has answered your question, please click ""Accept as Solution""."
    E
    exarianAnswer
    Associate III
    May 2, 2025

    Hey @ov_it 

    Here is another STM32N6 specific design from the DK reference design, using the HEXASPI.

    exarian_0-1746167632106.png

    To RAM:

    exarian_2-1746167890265.png

    To STM32N6:

    exarian_1-1746167854851.png

    Ref: https://www.st.com/resource/en/schematic_pack/mb1939-n6570-c02-schematic.pdf

      Terms & ConditionsAccessibility statement