18F4550 running 3.3V (serin2) and 16F877 running 5v (serout2), is possible?

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  1. - 27th January 2014, 12:50 #8
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    aratti
    aratti is offline Senior Member
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    Default Re: 18F4550 running 3.3V (serin2) and 16F877 running 5v (serout2), is possible?

    I suggest to remove the diodes and leave the 10k, hence add a 20k resistor from the 3.3V input pin to ground, in order to create 1/3 divider network.

    Cheers

    Al.
    Last edited by aratti; - 27th January 2014 at 12:52.
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