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Visitor II
April 26, 2021
Question

On the LPS22HB SPI, what is the minimum high time for CS?

  • April 26, 2021
  • 1 reply
  • 565 views

I'm communicating via SPI with an LPS22HB using an FPGA. Is there a minimum time specification between SPI transactions? I'm currently setting CS high for 0.5 SPC cycles between transactions, but this doesn't seem to work.

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    1 reply

    ST Employee
    April 27, 2021

    Hi @JPhil.3​ ,

    I would say you have to take into account at least 1 clock pulse, since the internal logic has to understand the line has changed the polarity.

    It is not directly reported in the datasheet p.12, but I would try (at least) with this value.

    -Eleon