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Power Down Sequence Warning Explained

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  • #46


    meldavia wrote: There is no specific power-down requirement for LCD displays. Power can be interrupted during any type of operation and it will not cause any adverse effects.
    Is this statement still correct?
    Are you saying if I use a uLCD32032-P1T then there is no power down issues ?

    Kevin

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    • #47


      can anyone help with my above questions please ? ..........

      Kevin

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      • #48


        The statement applies and still applies to LCD displays
        Mark

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        • #49


          Does this also apply to the G2 version(s) of the OLED displays? I am planning to develop an in-car gauge display, which will be powered on and off as frequently as the car is powered on and off (multiple times per day).

          If it is an issue, what is your recommendation for preventing damage?

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          • #50


            If you can, try and set contrast to 0 before power is removed.

            If you can't, well you can't
            Mark

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            • #51


              @ESPsupport
              Thank you for trying to help with this problem, but the last bit of your answer "If you can't, well you can't" rather negates the first part of your reply.

              Either its important to set "contrast to 0" or its not.

              Maybe some explanation of what the reasons behind it are and what effect setting the contrast to 0 would have, would help us all.

              Thanks,
              Kevin

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              • #52


                I did say "If you can".

                Really it's not that important anymore. It used to be important with first generation OLEDs, but newer OLEDs are better designed.

                It refers to the internal voltages within the OLED and how they dissipate when power is removed, setting contrast to zero sets them to 0 and hence they don't need to dissipate anywhere.
                Mark

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                • #53


                  Many thanks :-)

                  K.

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