Trying to derive a flip flop out from other counter outputs

Thread Starter

Wendy

Joined Mar 24, 2008
22,547
I need to bring the 2048 output on a 4060 counter without adding a separate FF. Is their a way to derive this output using the other outputs using gates?

4060.jpg
 

BobTPH

Joined Jun 5, 2013
3,690
Does it need to be 50% duty cycle?

I think anding all the lower outputs would give you the right frequency with a lower duty cycle.

Bob
 

Alec_t

Joined Sep 17, 2013
12,213
If you can put up with a non-uniform pulse spacing then you can use the slower frequency (4096) to chop out pulses from the higher frequency (1024), like this :
2048sim.jpg
 

Thread Starter

Wendy

Joined Mar 24, 2008
22,547
I like using all the lower count outputs for a diode AND gate which could then be inverted. I'll show my latest brain fart shortly on another thread. Thank you everyone for playing!

Don't see how.
Why the reluctance to use an added FF?
Trying to reduce footprint size and wiring complexity.
 

Ian0

Joined Aug 7, 2020
3,280
Replace the CD4060 by a CD4020 which has a Q11 output. Add two gates to the CD4020 to make the oscillator which is built into the CD4060.
 

Thread Starter

Wendy

Joined Mar 24, 2008
22,547
Replace the CD4060 by a CD4020 which has a Q11 output. Add two gates to the CD4020 to make the oscillator which is built into the CD4060.
Thank you. I needed to step back and do a rethink. Given the times are grossly rounded off (as they were in my old concept). Here is a 4040 approach. The top 4 outputs will count down in a binary display (inverted).

Reference 2.png
 
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LesJones

Joined Jan 8, 2017
3,498
I normally use Farnell. I keep a list of items that I am low on stock until the order will qualify for free postage.
The TS if they chose this option would have to choose one that they was capable of programming.

Les.
 

Ian0

Joined Aug 7, 2020
3,280
I normally use Farnell. I keep a list of items that I am low on stock until the order will qualify for free postage.
The TS if they chose this option would have to choose one that they was capable of programming.

Les.
They’ve got none of the ones I use - quoting delivery dates of April 2022!
 

LesJones

Joined Jan 8, 2017
3,498
I've not ordered anything from them since November 2019.
I was thinking of PIC12F1840 or ATtiny13A. They have the PIC in stock but not the ATtiny.
If the TS was interested in that approach I probably would have suggested the ATtiny as the programming hardware required is cheaper.

Les.
 

Thread Starter

Wendy

Joined Mar 24, 2008
22,547
Lets keep it on topic, guys. My first project for a µC would be a 4 digit counter, but I don't use them ATM.

Lack of expertise.
 

Thread Starter

Wendy

Joined Mar 24, 2008
22,547
To finish off this thread I'll post the solution (which I'll never use).
Solved.jpg
 
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