What is the Optimal Clock Frequency for a 4029 CMOS Up/Down Counter?

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SUMMARY

The optimal clock frequency for the 4029 CMOS Up/Down Counter is 2MHz at a 5V supply voltage, with the capability to reach 5.5MHz at a 15V supply. There is no specified lower frequency limit; however, the clock signal must have rise and fall times faster than 15μS. For applications such as counting heart rate from an amplified and filtered microphone signal, it is essential to refresh the display every 15 seconds using a 4011 driver to convert BCD to a 7-segment display.

PREREQUISITES
  • Understanding of CMOS technology and the 4029 Up/Down Counter
  • Knowledge of clock signal characteristics, including rise and fall times
  • Familiarity with heart rate measurement techniques using pulse trains
  • Experience with BCD to 7-segment display conversion using the 4011 driver
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  • Research the specifications and applications of the CD4029B CMOS Up/Down Counter
  • Learn about clock signal generation and optimization techniques
  • Explore methods for measuring heart rate using electronic components
  • Investigate the design and implementation of BCD to 7-segment display circuits
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Electronics engineers, hobbyists designing heart rate monitors, and anyone interested in implementing CMOS counters in digital circuits.

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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 the backround and send it to the driver every 15 seconds... Please Shed some light thanks. bye
 
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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
 

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