> > according
> > to page 17 of the data sheet of 16f628, aden is not
> > used in synchronous mode. But in the page 83, they
> > use both synchronous and asynchronous mode. So
> > which one is true? Thanks...

There is no mention of ADEN on page 17 of my manual

On page 83 it says that ADEN works the same in either
synch or asynch mode, and I don't see any reason not to
have it in both

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