4017 count 0 to 99

[Zebo]

Can 2 X 4017 be conencted to give counts from 1 to 100. It will be hard wired for the particular count I want so no extra parts if possible. So I only want, say a pulse every 13 pulses of the clock input and for the next project say 78. I need even and uneven counts. Possible? I Googled for hours, but what I found does not give proper information. Can anyone post a circuit? I will sure appreciate it.

 

[MikeMl]

Counting 0-99 with two 4017s is easy. Resetting on numbers divisible by 10 (10, 20, 30, ...) is easy without adding gates. Resetting on some arbitrary number like 73 requires external gates.

 

[ericgibbs]

Can 2 X 4017 be conencted to give counts from 1 to 100. It will be hard wired for the particular count I want so no extra parts if possible. So I only want, say a pulse every 13 pulses of the clock input and for the next project say 78. I need even and uneven counts. Possible? I Googled for hours, but what I found does not give proper information. Can anyone post a circuit? I will sure appreciate it.

hi,
Clip from the datasheet.

 

[Zebo]

Thanks Mike & Eric, I will see how that works for me.

 

[crutschow]

A rate multiplier/divider should be easier to use if you want a pulse out at various division ratios. That is what they are designed for.

 

[Zebo]

hi,
Clip from the datasheet.

Thanks eric, that worked fine. Now I need an output on pulse 14 and 15 and then re-set. Is that possible or is there a better chip for that?

 

[ericgibbs]

Thanks eric, that worked fine. Now I need an output on pulse 14 and 15 and then re-set. Is that possible or is there a better chip for that?

hi,
If I follow your question, you are wanting to RESET on the 16th count.??? is that correct.?

 

[Zebo]

Yes, it must continuously count 1 to 15. I will use count 14 and 15.

 

[ericgibbs]

Yes, it must continuously count 1 to 15. I will use count 14 and 15.

Hi,
This circuit should give what you are asking.