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respected
respected
Associate II
December 9, 2013
Question

STM32F4 and SSD1963 noise problem

  • December 9, 2013
  • 2 replies
  • 644 views
Posted on December 09, 2013 at 15:02

I have 7'' TFT  with SSD1963 chip. I  noticed that there is a picture on the screen, but there is a big problem. As soon as I touched the screen body anywhere , the screen was dark. In addition,  when I replaced software , the screen started working , but it started being dark again. 

In fact, I have a power supply. It has 1.2V 3.3V and 5.0V at 3A. My controller is STM32F4. 

I used FSMC

https://www.youtube.com/watch?v=8GR6RkV7kRo

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    2 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    December 9, 2013
    Posted on December 09, 2013 at 15:29

    Looks to reset your system, rather than ''noise'', consider if you have effective grounding and supply connections.

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    respected
    respectedAuthor
    Associate II
    December 9, 2013
    Posted on December 09, 2013 at 16:21

    I used STM32F4 board and original STM32 ext BB board. Power supply hasn't noise. Because I saw on the oscilloscope. When I disconnected power supply and board, Noise is not there. If I connect board and power, I have seen noise signal on the scope. 

    Maybe caused by FSMC.

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