Urgent Help - 0-5 Counter with T and D FlipFlops

[S1nGh]

Hello All,
Need help with my design here and a bit of advice...

The thing is I designed this 0-5 Counter which counts perfectly....
http://img92.imageshack.us/img92/834/05yl0.jpg

Now the thing is If I replace it with T flipflop this is type of waveform I get
http://img227.imageshack.us/img227/4475/screenhunter01nov240052fa6.gif

Its going from 0,1,3 and holding at 7

Could Somebody please explain me the reason for this pattern

KJ

 

[kchriste]

How have you wired the T flipflop into a circuit designed for a D flipflop? Show your diagram with the T flipflop. To make a counter with T flipflops, you would just cascade them into a ripple counter.

 

[S1nGh]

How have you wired the T flipflop into a circuit designed for a D flipflop? Show your diagram with the T flipflop. To make a counter with T flipflops, you would just cascade them into a ripple counter.

Yes sir I did...just replaced the D flipflops with T's....Here's the daigram:
http://img381.imageshack.us/img381/7820/97721054pc6.jpg

 

[ericgibbs]

Yes sir I did...just replaced the D flipflops with T's....Here's the daigram:
http://img381.imageshack.us/img381/7820/97721054pc6.jpg

hi,
Look here, it explains the T F/F equation.

Flip-flop (electronics - Wikipedia, the free encyclopedia)

 

[S1nGh]

hi,
Look here, it explains the T F/F equation.

Flip-flop (electronics - Wikipedia, the free encyclopedia)

It just says flipflops......
Could you direct me to the exact page please....

KJ

 

[ericgibbs]

It just says flipflops......
Could you direct me to the exact page please....

KJ

Google for: T flip flop and look at the Wikipedia page.

For some reason my first link does not connect correctly.

 

[S1nGh]

As said before To use T flipflops I will have to cascade them into ripple counter which I am not sure how to do

 

[ericgibbs]

As said before To use T flipflops I will have to cascade them into ripple counter which I am not sure how to do

hi,
You say you know how to make a ripple cntr using D type F/F's.

Consider making the T type F/F act as a D type.

If you use a dual XOR gate from the Q output of a T type, to couple to the next T type input it will function as a D type.

Ground one pin of the XOR

When you have the T F/F's working as a ripple counter add gates to give a reset on the count of '6'.

OK.?

 

[S1nGh]

Eric,

This is an example I did....A 4 bit counter using T flipflops
http://img529.imageshack.us/img529/8572/20161845pw0.jpg

It doesn't seem to count though

KJ

 

[ericgibbs]

Eric,

This is an example I did....A 4 bit counter using T flipflops
http://img529.imageshack.us/img529/8572/20161845pw0.jpg

It doesn't seem to count though

KJ

Try the XOR dual gate connection method.

 

[S1nGh]

Try the XOR dual gate connection method.

How is that done???

Cheers
KJ

 

[S1nGh]

Is it something like this:
http://img407.imageshack.us/img407/6859/17991476yx4.jpg

 

[ericgibbs]

Is it something like this:
http://img407.imageshack.us/img407/6859/17991476yx4.jpg

hi,
Look at this simulation.

Digital Logic - Counters