Andreas Nyholm wrote: > I found out that 10k is a good value for a pull-down resistor on a > PIC-input but what are the limits? Is it also ok with 100k? The high end limit comes from the PIC pin leakage. However, the value based on that is so high that it the input may pick up noise. The low end limit is 0 if the pin is always an input. If the pin must also be able to drive to logic high level sometimes, then the limit comes from the maximum current the PIC pin can source, and possibly the minimum logic 1 level of the receiving device. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body