Need help with aCD4059A "Divide-By-N" chip

Guest
I need help setting up this to an N factor of 1000. I am trying to lay this
chip out on a PCB. I have the manufacturer data sheets, but I don't
understand them.

Any help would be great.
 
<elehman1@columbus.rr.com> wrote in message
news:5K22d.10$pK4.2@fe2.columbus.rr.com...
I need help setting up this to an N factor of 1000. I am trying to lay
this
chip out on a PCB. I have the manufacturer data sheets, but I don't
understand them.

Any help would be great.
Never used the part myself but it doesn't look too hard....
http://www.ee.washington.edu/stores/DataSheets/cd4000/cd4059.pdf

This looks like one way...

N=One Thousand
choose Mode=10 (eg Ka=1, Kb=1,Kc=0)

N/Mode=One Hundred so try with

J4-J1=0

J8-J5=0
J12-J9=0
J16-J13=1 (eg 0x0001)

To verify

N= 10 x (1000x0 + 100x1 + 10x0 + 1x0) + 0
= 10 x (0+100+0+0) +0
= 10 x 100
= 1000

Sorry if I've mixed up my indians :)
 
I was curious about this IC, so I bought one to play with.

I am not great at the Varification on this chip, but I built up the
circuit as you have written it below. Checking it out with my signal
generator, with an input of 100,000 hz it has an output of 7 hz.
Not the 100 hz as expected.

I Determined that for Mode Select 10:
Pin 14, Ka = 1
Pin 15, Kb = 1
Pin 11, Kc = 0

Pin 3, J1 = 1
Pin 10, J13 = 1

And all other Jams = 0

For a Normal high pulse output, Pin 2, Latch should = 0

With this connection and 100 Khz in, I get 100 Hz out.

Now can Someone Varify this with the math?

Take care.........Gary
**************************************************************************

"CWatters" <colin.watters@pandoraBOX.be> wrote in message news:<01o2d.248391$ig2.12591161@phobos.telenet-ops.be>...
elehman1@columbus.rr.com> wrote in message
news:5K22d.10$pK4.2@fe2.columbus.rr.com...
I need help setting up this to an N factor of 1000. I am trying to lay
this
chip out on a PCB. I have the manufacturer data sheets, but I don't
understand them.

Any help would be great.

Never used the part myself but it doesn't look too hard....
http://www.ee.washington.edu/stores/DataSheets/cd4000/cd4059.pdf

This looks like one way...

N=One Thousand
choose Mode=10 (eg Ka=1, Kb=1,Kc=0)

N/Mode=One Hundred so try with

J4-J1=0

J8-J5=0
J12-J9=0
J16-J13=1 (eg 0x0001)

To verify

N= 10 x (1000x0 + 100x1 + 10x0 + 1x0) + 0
= 10 x (0+100+0+0) +0
= 10 x 100
= 1000

Sorry if I've mixed up my indians :)
 

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