On Fri, Sep 10, 2004 at 03:33:05PM +0200, Jan-Erik Soderholm wrote:
> Byron A Jeff wrote :
> 
> > Peter Johansson wrote:
> >
> > >  They [PIC12Fxxx] seem to be HVP flash memory, but
> > > include an internal high voltage generator.
> > 
> > Right.
> 
> Do they ?

Yes.

> I didn't know that.

> I thougt they needed an external high voltage to program
> just as any other PIC...

They do. But as I stated, it's a high voltage signal, not a
high voltage drive. If you check the data sheets you'll
see that the Vpp current requirement is something like 100 uA
which certainly isn't enough to actually do any programming.

Microchip deicded with the smaller than 18 pin parts that it
wasn't worth it to dedicate a whole I/O pin for LVP. But the
structure is the same as the larger flash chips which do have
LVP.

BAJ
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