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    Acetronics thanks, I tried both things grounding...

    Acetronics thanks, I tried both things grounding the MCLRE pin while powering it up with battery instead of adopter supply. It didn't work, so I think the chip must be faulty. Whether on external...
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    Mack: Yes i am using Proton, haven't done any...

    Mack: Yes i am using Proton, haven't done any change in the circuit yet but seems I might be able to run it on external oscillator by adjusting capacitors on OSC1 & OSC2 ports. Just realized that the...
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    Hello again: Here is an update on this strange...

    Hello again: Here is an update on this strange chip. I placed the 1000 uF Capacitor on the input side of the 5V regulator as it was not letting the ICSP and placed 0.1 uf ceramic directly on the VSS...
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    Thanks Mack, MCLR is connected to VDD through a...

    Thanks Mack, MCLR is connected to VDD through a 10K resistor and also grounded with a bypass ceramic capacitor of 0.1uf. I also placed a big 1000 uf capacitor between ground and 5V line but...
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    Problem with PIC 16F819

    Hi, I have this terrible problem with PIC 16F819, it does not starts up with external or internal oscillators if the supply voltage is 5V regulated. However if I decrease the VDD to 3.4 it starts...
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