Read the appropriate section of
http://www.microchip.com/download/tools/picmicro/program/icsp/30277c.pdf

Al Williams
AWC
* Floating point A/D
http://www.al-williams.com/awce/pak9.htm


> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Donovan Parks
> Sent: Sunday, January 06, 2002 10:35 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [PIC] ISP of PIC16F877 using Warp13 Programmer
>
>
> Hello,
>
> I have a Newfoundland Electronics Warp13 programmer and would
> like to program my PIC16F877 using the ISP feature of the
> programmer and chip.
>
> The help file for the Warp13 is not entirely clear on how to
> correctly isolate the pins used in ISP.  RB6 and RB7 are not
> being used in my application so these are easy (as is
> ground), but I am uncertain as to what 'isolation' circuits I
> should be using on Vpp(/MCLR) and Vdd.  The help file
> suggests either a diode or resistor on Vpp(/MCLR) - what is
> better? why? what value of resistor?  I am at a loss at how
> to isolate Vdd.
>
> Also, am I correct that my programmer will supply all power
> needed to do ISP (or should I be supplying +5V to the PIC)?
>
> Thanks for any and all help.
>
> Donovan
>
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