Forrest W Christian wrote:
> I have a couple of designs which require a 3.3V Vdd.
>
> I need to figure out the magic connection which will allow me to use an
> ICD in these circuits.    Or more specifically, program the chips
> without resorting to pulling them out of the circuit, putting them in a
> programmer, and then putting them back in place.   I could care less
> about the debugging functionality.

I'm a bit confused.  Are these 3.3V only PICs or regular 5V PICs that you
are running at 3.3V?  If the latter, they will require 5V Vdd during
programming.  Your circuit has to be designed to tolerate this if you want
to do ICSP.  Maybe my circuit design guide for ICSP
(http://www.embedinc.com/picprg/icsp.htm) will help clarify.


********************************************************************
Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products
(978) 742-9014.  Gold level PIC consultants since 2000.
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist