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> Brendan Moran <bmoran@MILLENNIUM.CA> wrote:
> > > I don't suppose you know of any 3volt three pin reset
> > > generators that have an open collector output that can
> > > withstand the 13volts Vpp on a PIC?  Seems like no-one makes
> > > such a beast.
> >
> > I'd say don't worry about the open collector, and put a diode in
> > series with the ouput.
>
> The reset generator still needs to withstand 13V if you don't want
> any current to flow in the diode when the anode is at Vpp. It's
> unlikely that a totem-pole device would meet this requirement with
> a 3V supply.

Erm... I think you missed the point.

     |        Vpp
Reset|         |   |
Gen  |---|>|---+---|PIC
     |             |
     |

That should be clearer.  No need to withstand 13V.

- --Brendan

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