LVP is just that, low voltage programming. The benefit is that you don't
need a high voltage (~13VDC) to program the PIC. The con is that you lose an
I/O. TTYL

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Thomas N
> Sent: Thursday, March 07, 2002 16:04
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: From 16F84 to 16F877
>
>
> What is the different between High voltage Programming and LVP?  Why do we
> want LVP or HVP?
> Thomas
>
>
> >From: Peter Onion <ponion@SRD.BT.CO.UK>
> >Reply-To: pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU>
> >To: PICLIST@MITVMA.MIT.EDU
> >Subject: Re: From 16F84 to 16F877
> >Date: Thu, 7 Mar 2002 11:16:57 -0000
> >
> >Somewhere in the middle of a load of html you said
> >
> >"I have found keeping the LVP pin low during high voltage programming
> >has eradicated programming errors I had been having if I left it
> floating."
> >
> >I've built my own "high voltage" programmer which doesn't do
> anything with
> >RB3 and not had any problems with errors at all.
> >
> >I wouldn't expect the state of RB3 to have any importance if LVP isn't
> >enabled in the config word.
> >
> >YMMV
> >
> >Peter.
> >
> >--
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> >
> >
>
>
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