Re: [f-cpu] No latches, please !

[Juergen Goeritz <goeritz@oekomm.de>]

On Wed, 13 Feb 2002, Ben Franchuk wrote:
> nicolas.boulay@ifrance.com wrote:
> > 
> > I have miss that : please NO LATCH in our design !!!!
> > 
> > It's almost useless compare to classique flip-flop. I
> > have said nothing for the register set because of the
> > speed. But latch are generaly a very very bad idea.
> > It's almost impossible to test correctly and a lot of
> > tools have problem with them (static timing analysis,
> > compiler ...).
> > 
> Time for better tools? Latches have their place in design, but require
> more care with design and clock generation. 

Usually you only use latches to synchonize input signals
to keep input setup times of other circuitry.

JG

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