Because Im using the c74 mainly for the PSP, I might not
use rb6 and rb7 for I/O, just for the ICSP, so in that case
I would probably just need to tie them to ground through
a 10k resistor wouldnt I ?
Also I take it that the chip would go immediately into pgm
mode on startup and wouldnt get a chance to start running the
program, I take it this is what you mean by tying osc1 to ground,
Andy.
Thanks
Justin Grimm



----- Original Message -----
From: Jamil J. Weatherbee <jamil@SCOTTIBOX.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Thursday, 27 May 1999 3:56
Subject: Re: ICSP


> 10k usually is a good value, if your using the pin as an input to the pic
> if output then you need to evaluate R based on what you are driving,
> acceptable voltage drop and current etc.
>
>
>
> On Wed, 26 May 1999, Justin Grimm wrote:
>
> > Hi all
> > Has anybody had any problems with in circuit serial programming?
> > Im going to implement it in a new pcb design. I take it you just
> > bring vdd,vss,rb6,rb7 and mclr out to a connector.
> > does anyone recommend a size of resistor to use for the design
> > in the 167x databook?
> > Thanks
> > Justin
> >
>