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 >