> I plan to use the internal RC oscillator at a low speed (31.25 kHz). if you are running the pic off that then you will not be able to use the pics clock as a timebase. your best bet is probablly to clock the pic off a 32768HZ watch crystal. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist