LPC MicrocontrollersのトピックRe: Movable function input behavior when it swithed by switch matrix

Movable function input behavior when it swithed by switch matrix

alexeyborisenko — Wed, 07 Feb 2018 12:08:16 GMT

Which level movable function see when it disconnected from any pin by FF?

Can I assume that switching of input function between pins is clean, without glitch pulses inroduced by SWM?

Re: Movable function input behavior when it swithed by switch matrix

kerryzhou — Fri, 09 Feb 2018 08:19:51 GMT

Hi Alexey,

About this movable function level, we don't have the test data defined in the datasheet.

But, if you have interest, I think you can test it by yourself on your side, I don't think this point will influence your usage.

Anyway, If you have the problem in your practical usage about this point, please kindly let us know.

Have a great day,
Kerry

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Re: Movable function input behavior when it swithed by switch matrix

alexeyborisenko — Fri, 09 Feb 2018 16:03:28 GMT

I prefer to not rely on any undefined behavior at all, but when I trying to assume that all that not clearly defined in official datasheet and user guide is undefined, I become frustrated because too many features of LPC microcontrollers become not useful for my needs only because of lack of clear definitions in those official documents. I believe that engineereing staff of NXP will work on that documents to resolve this problem, but I not see any significant advances in thtis direction over years. :smileysad:

Re: Movable function input behavior when it swithed by switch matrix

kerryzhou — Sun, 11 Feb 2018 08:12:12 GMT

Hi Alexey Borisenko,

Sorry for the inconvenience we bring you.

If you don't want to test, please tell me the chip which you want to use, I would like to help you to test it on my side. But this data is just for your reference, different work condition may have difference.

Have a great day,
Kerry