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ADS7846 touch screen, PENIRQ signal

Fausto Bartra
Prodigy 160 points
Other Parts Discussed in Thread: ADS7846

Does any one has a timing specifications for this signal?

Rise, fall, low times?

 

Thank you

 

Fausto Bartra

  • 0
    TI__Guru**** 176331 points

    Hi Fausto,

    On the ADS7846, the rise and fall times and low times depend on several “external” factors like panel resistance, external capacitors being used (or not) at the panel inputs, pull up resistor on the PENIRQ pin, etc.  Unfortunately we cannot specify the rise/fall times in the data sheet because these numbers end up being application specific.