Hi, yes, it is self-clearing. It cycles 0 4 6 7 1 (leftmost FF MSB), 2 clears to 7, 3->1, 5->2. On one output you get 3/5 duty cycle, on the other two you get 2/5.
Detlef Schücker Von: "Robert LaJeunesse" <lajeune...@mail.com> An: time-nuts@lists.febo.com Datum: 01.07.2020 09:30 Betreff: Re: [time-nuts] low power divide by 5 Gesendet von: "time-nuts" <time-nuts-boun...@lists.febo.com> Take a look at the "modified" shift-register like counter in the attached jpg file. When simulated online it behaved as expected for a divide by 5. I believe it also is self-clearing from illegal states, but the other simulator I tested that in wasn't good for documenting the design. Bob L. > Sent: Tuesday, June 30, 2020 at 6:47 PM > From: "dschuecker" <detlef.schuec...@dschuecker.de> > To: time-nuts@lists.febo.com > Subject: Re: [time-nuts] low power divide by 5 > > Hi, > > a divide by five should possible with a synchronous state-machine made > of 3 ( sufficiently fast-) JK-FlipFlops. > > All 3 FFs are clocked with the input freq. , the outputs of the FFs are > fed back to the the JK-inputs, the divided freq. is output of one of > the FFs. > > Additional constraints: no external ANDs or ORs or NOTs, the > state-machine does not get stuck in the 3 unused states. > > This turned out to be a very interesting problem and I do not yet come > up with a solution. Maybe there is none. Analytical solutions all > failed, I will try a brute force enumeration attack tomorrow. > > lots of fun ! > > Cheers > > Detlef _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
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