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

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  1. - 26th January 2014, 13:48 #6
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    Gusse
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    Default Re: 18F4550 running 3.3V (serin2) and 16F877 running 5v (serout2), is possible?

    Sounds that you may have other problems than signal line and components between two PICs.
    - Power supply and de-couplings (internal noise)?
    - External noise coupling (shielding to transmission path between PICs)?
    - Grounding of PICs (GND references)?
    - Grounding between PICs (GDN reference)?
    - Used TX speed (signal integrity)?
    - etc...
    Last edited by Gusse; - 26th January 2014 at 13:54.
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