4029 Cmos Up/down counter

  • #1
what can be the frequency for the clock signal that is to be counted? I read on another website that it is a minimum of 2MHz!!! to run optimally...that is. Well I am trying to count heartrate from a microphone that is amplified and filtered to look likea square wave or pulse train....Not sure yet. and it neeeds to display the heart rate in beats per minute and be refreshed every 15 seconds.... Hmmm... I understand how i can use the 4011 which is the driver that takes the BCd to 7 segment, yet am unsure how to count the bpm in teh backround and send it to the driver every 15 seconds... Please Shed some light thanks. bye
 

Answers and Replies

  • #2
Tom.G
Science Advisor
3,875
2,577
According to the datasheet here: http://www.ti.com/lit/ds/symlink/cd4029b.pdf

That 2MHz clock is the maximum clock frequency at 5V supply voltage, and goes up to 5.5MHz with a 15V supply. There is not a lower frequency limit, just a requirement that the clock rise and fall times are faster than 15μS.

Cheers,
Tom
 

Related Threads on 4029 Cmos Up/down counter

  • Last Post
Replies
3
Views
5K
  • Last Post
Replies
13
Views
10K
Replies
2
Views
1K
  • Last Post
Replies
1
Views
1K
Replies
2
Views
1K
Replies
1
Views
3K
Replies
12
Views
10K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
3
Views
6K
  • Last Post
Replies
3
Views
856
Top