You can not have ANY capacitors to ground on the MCLR, PGC, PGD pins.
Resistances greater than 10K are permitted.
You do NOT need a clock for programming, but it is necessary for debugging.


Frank T. Dai wrote:

>I'm prototyping with a 18f452 on a solderless breadboard, but the ICD2 
>never recognizes the PIC chip("cannot validate target device").
>
>ICD2 passes the self test, I'm providing power to all of the Gnd/Vdd 
>pins, and I've provided an external clock source of 4MHz through a 
>function generator.
>
>Are there any gotchas you guys can think of? Any help is greatly appreciated.
>
>  
>

-- 
  *
  |  __O    Thomas C. Sefranek   WA1RHP@ARRL.net
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