Mark Chauvin wrote: > I'm going to don my dummy hat and ask a stupid > question - how do you decouple a chip? Do you mean > put a very small cap across chip pwr & gnd Yes. > so it gets > rid of any ripple caused by the other parts of the > circuit? No. So that it rides out the current spikes caused by the chip itself. It reduces the power supply impedence at high frequencies seen by the chip. ****************************************************************** Embed Inc, Littleton Massachusetts, (978) 742-9014. #1 PIC consultant in 2004 program year. http://www.embedinc.com/products -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist