On 15 Aug 2006 at 13:17, Brooke Clarke wrote:

> I would like to be able to use ICD2 for both programming and debugging
> in the 16F88 clock I'm working on without sacrificing 3 pins to ICD2.
> (1) Can I set Vpp/MCLR to internal MCLR and put a N.O. pushbutton
> switch on that I/O pin to gnd and still use ICD2 or must I give up
> this pin for I/O?  (i.e. are the configuration bits related to only uC
> operation or do they have programming and debugging meaning? (3) If
> internal MCLR is selected can ICD2 be used in debugging only mode
> (i.e. Vpp will no longer be available)? (3) On the two (PGC & PCD)
> communications pins can I put a 100 K resistor to +5v and N.O.
> pushbutton switches to ground and still use ICD2? 

Probably no for all of the above. Pull-ups on PGC or PGD stop the ICD2 (tried that 
recently!) as ICD2 apparently has internal pull downs. Perhaps you may be able to 
use pull downs and switches to +5V.

-- 
Brent Brown, Electronic Design Solutions
16 English Street, St Andrews,
Hamilton 3200, New Zealand
Ph: +64 7 849 0069
Fax: +64 7 849 0071
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eMail:  brent.brown@clear.net.nz


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