Hi all,

I need to externally clock a 'F84-04 with a 4 MHz clock. Does the duty
cycle of this clock need to be exactly 50%. I cannot find any reference
to Duty Cycle requirements in the data sheet, and my feeling is that it
is not critical????

Also when programming the PIC I assume I still select "XT" for the
crystal mode when  supplying an external clock into the CLKIN pin??

thanks for your help
Rob

Perth
Western Australia