Not sure how to connect 60 second timer using two 74163 chips.

Thread Starter

joyrulez750

Joined Apr 21, 2021
6
Hi, I've been working on this circuit design for a while now, but I am having trouble getting the top 74163 chip used to count my tens place to work. I think my issue comes from me not knowing exactly where my P and T enablers are supposed to pull from. My bottom counter works counting from 0-9 and then resetting but, when I hit 9 nothing happens in my top counter. The counter is supposed to count from 00 to 59 and then rollover back to 00 while also having a dipswitch connected to manually hold the counter at 00. My current design is attached below:



Thank you!
 

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dl324

Joined Mar 30, 2015
13,082
The information you need is in the datasheet.

Why are you using binary counters when decade would make implementing 0-59 easier?
 

Thread Starter

joyrulez750

Joined Apr 21, 2021
6
Yes I am, once the bottom counter reaches 9 the top counter waits until the next clock to increment.
I believe I understand P and T.
 

MrChips

Joined Oct 2, 2009
24,143
If you were asked to use flip-flops then that would be a reasonable request.
If you are allowed to use a 74163 ask your instructor why you are not allowed to use a 74160.
 

dl324

Joined Mar 30, 2015
13,082
Page 3 of the instructions doesn't require the 2 counters to be clocked synchronously.

EDIT:
10secInstr.jpg

EDIT2: The "helpful hints" section seems to imply that the two counters do have the same clock and that you're to use P and T to control when the 10's counter increments. It can be done either way, so you decide and we can provide tips if you can't figure out how to do it.
 
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