On 29/04/2011 17:29, slippyr4 wrote:
> Hi All,
>
> I am trying to get my ICD3to talk to a 12f629. I've never used this part
> before.
>
> I have a brand new 12f629, never flashed, and i've wired it up as follows=
-
>
> pin 1 ->  supply 5v + ICD3 Pin 2 (Vdd)
> pin 8 ->  supply gnd + ICD3 Pin 3(Gnd)
>
> pin 4 ->  ICD3 Pin 1 (MCLR)
> pin 7 ->  ICD3 Pin 4 (ICSPDAT)
> pin 6 ->  ICD3 Pin 5 (ICSPCLOCK)

Have you got a bypass cap across Vdd and Gnd?
Have you checked with a scope the DAT/CLK waveforms look okay during=20
connection? (also power/MCLR pins too)


--=20
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