> That's what I do (I monitor ADIF in PIR1) but when I see ADIF=1 I still wait > an extra iteration. This is because in the mid-range reference manual I have > read that you must allow for at least 2 Tad extra between two consecutive > acquisitions (actually after finishing the conversion but before starting > the next acquisition). Isn't this correct? Yes, but you're going to wait at least 22uS anyway as I understand it. You do need to wait before starting the next conversion, but not before reading the results or switching the channel after a conversion. ***************************************************************** 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