Joe Burch

Rudimentary Frequency Counter Using the 908QY4 Chip

Discussion created by Joe Burch on Feb 15, 2007
Latest reply on Feb 15, 2007 by Bill Scheremeta
Hello folks...
 
Please pardon this very basic question.
 
I would like to know how one might go about designing a rudimentary frequency counter using the QY4 chip.  All I need to be able to do is to measure a frequency between 3500 kHz and 30000 Khz at bench marked intervals to determine if the previous measurement as higher or lower that the one which follows it.  There is no need to display the frequency, just to compute it.  I'll be using the internal oscillator, and measurements need only be made with 1Khz resolution, nothing finer.
 
Will an external hardware prescaler be needed?
 
Which timer mode(s) would be most helpful?
 
Thanks, in advance.
 
Joe Burch - K3JLS
 
 

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