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External RAM for FrameBuffer on STM32H7S7L8

Leo99
Associate III

Good morning to all,
I’d like to ask your advice.
I have to insert an external RAM for the framebuffer because the internal one is not enough for LCD that I will drive (LCD-TFT LVDS 7 inch 1024x600).
Which external RAM do you recommend? Could a QuadSPI work?

1 ACCEPTED SOLUTION

Accepted Solutions

Hello,

You can use HSPI interface. You can refer to the STM32H7S78-DK board as reference (using APS256XXN-OBR memory):

SofLit_0-1719239743231.png

 

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View solution in original post

6 REPLIES 6
Leo99
Associate III

I add that I have a micro LQFP176 pin.
Do I have to use the FMC? Quad or Octo SPI?

Hello,

You can use HSPI interface. You can refer to the STM32H7S78-DK board as reference (using APS256XXN-OBR memory):

SofLit_0-1719239743231.png

 

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
PS: Be polite in your reply. Otherwise, it will be reported as inappropriate and you will be permanently blacklisted from my help/support.

Thank you! 
The problem is that in the package LQFP that I’m using it is not available the HexaSPI only Octa.

In that case use it in Octal mode:

SofLit_1-1719244610393.png

 

 

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
PS: Be polite in your reply. Otherwise, it will be reported as inappropriate and you will be permanently blacklisted from my help/support.

Perfect, thank you very much!

BarryWhit
Lead II

Knowledge Base: How to set up the FMC peripheral to interface with the SDRAM IS42S16800F-6BLI from ISSI 

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