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Thread: rise time requirement for PORST

  1. #1
    New Member New Member sheitbrink is on a distinguished road
    Join Date
    May 2016

    rise time requirement for PORST

    Hi all,
    I suppose I am trying to figure out what the PORST rise time requirement, on pg 78 (table 38), means for my upcoming design. I see in the relax kit this pin is simply pulled up to +3.3V. Would this mean that my power supply would have to rise at a certain rate? Or do I need to put a power supervisor IC to make sure the system remains in reset until the power is fully stable? Generally I voltage regulators I use have a couple of millisecond rise times.


  2. #2

    Infineon Employee
    Infineon Employee
    jferreira will become famous soon enough
    Join Date
    Oct 2012

    I would just copy the values from our reference designs.
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  3. #3
    Advanced Advanced aurixuser is on a distinguished road
    Join Date
    Jan 2017
    Several milliseconds to stabilize? Which regulator are you using?

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