Re: [Sdcc-user] PIC16f628A first time problem

[Raphael N. <rn...@we...>]

Hi,

probably related: You seem to be missing _MCLRE_OFF to free RA5 and avoid
the need for an external pull-up on #MCLR ...
Since you disabled LVP, I assume you can apply 10 - 13.5V to RA5/#MCLR to
program the device?

Without this and/or a pull-up on RA5/#MCLR, your device may remain in reset
indefinitely after power up ...

Good luck,
Raphael



On Sun, Nov 24, 2013 at 1:57 PM, jon <jo...@jo...> wrote:

> On Sun, 2013-11-24 at 05:07 -0700, Michael du Breuil wrote:
> > I'm confident its user error, but I seem to be unable to program my
> > PIC16F628A (it's my first foray into the world of PICs, been working
> > with arm M4's). All I'm trying to do is turn on LED outputs, but I
> > this doesn't seem to be working. I'm trying to use the internal 4MHz
> > oscillator, all the port A and B pins (so everything except for VDD
> > and VSS) are connected to a 10K resistor and LED. This is all done on
> > a breadboard, so it's possible there is an error in the wiring, but it
> > appears to be correct.
> >
>
> When I started using PICS I always forgot to pull MCLR up via 4k7, just
> a thought....
>
> Jon
>
>
>
>
>
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