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up/down counter

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kilwa-san

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hi everybody

can some one explain to me how this counter works
comp.png

its: Ctr BIN 4bits prog-CTR-PIPO-RAZ sync
:confused:
(PS: i only have basic infos about electronics == i suck )
help please
 
hi everybody

can some one explain to me how this counter works
View attachment 53677

its: Ctr BIN 4bits prog-CTR-PIPO-RAZ sync
:confused:
(PS: i only have basic infos about electronics == i suck )
help please

hi,
It looks like this type, view the pdf
 

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  • 74LS193.pdf
    273.8 KB · Views: 180
It would help if we knew the part number.
 
you mean this : 74HC163

i realy don't get the data sheets so if sombody could explain to me how to make it work as up and down counter ...
thanks
 
The 74HC163 is a binary "up" counter. It is not an up/down counter.
 
If that's the device you're looking at (74HC163), it's not an up/down counter. Counts up only.

Here's the datasheet. Look at the timing example on page 9. It shows the counter being preloaded with a value (12) and the count cycles started, counting up to fifteen rolling over to zero, counting to two and stopping (count enable inhibited). Does that help?

It's a fairly complex little device. You need to become familiar with the nomenclature and terminology. "Px" are parallel inputs. "Qx" are outputs. The rest are basically mode-setting and enable/disable lines.
 
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