counter asynchronous mod 15

Status
Not open for further replies.
J

John3456

Newbie level 1
Joined
Oct 20, 2018
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
6
Hi!
I designed counter modulo 15, but i have a problem. Counter is counting 0,1,2,3,4,5,6,7,14, but it should count from 0 to 14. i don't know where i have a mistake. (i cannot use reset input).Could you help me?
 

Attachments

  • img001.png
    28.2 KB · Views: 332

Hi,

This is no synchronous counter.
Synchronous counter means every DFF is running from the same clock.

****
Just build a synchronous binary counter.
Use FF with "synchronous_reset" and "clock_enable" input.
Build a binary comparator for "counter = 14" and feed it's output to all "FF synchronous_reset" inputs.

Klaus

Added: Sorry, just recognized you wrote "asynchronous". My answer is for "synchronous".
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…