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M. Jeong
Associate III
December 6, 2018
Question

Speed limit in the DCMI and the FMC in STM32H7

  • December 6, 2018
  • 3 replies
  • 1342 views

The DCMI controller in STM32H7 is faster than F4 and F7. It supports a pixel clock up to 80Mhz. However, is the FMC controller fast enough to acquire such fast data? Let's say, one has an image sensor that generates 10-bits or 12-bits data with 74.25Mhz. Then can she/he use a PSRAM or a SDRAM with STM32H7 to write the image data at a speed of 16-bits x 74.25Mhz ? This question is not about the memory capacity, so please assume that only one image needs to be captured.

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    3 replies

    Tesla DeLorean
    Guru
    December 6, 2018

    You want to be using 32-bit wide memories

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    M. Jeong
    M. JeongAuthor
    Associate III
    December 6, 2018

    With double-buffering, could a PSRAM be also a solution?

    Tesla DeLorean
    Guru
    December 6, 2018

    Does it improve the bandwidth of the memory interface?

    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..