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???
01/07/06 06:46
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#106761 - more details
Responding to: ???'s previous message
for max accuracy, be sure to use a toggling interrupt like T2 or a PCA channel.

Run it fast for the best resolution.

More clearly define the lowest frequency. If you want really slow frequencies you may have to change modes as the timers are only 16bit.

1hz - 1khz is 1000:1 range. 2hz = 1khz is 500:1 (big difference...)

Do you really need 1hz resolution at 1khz? (.1%)

Bob


List of 28 messages in thread
TopicAuthorDate
frequency generation            01/01/70 00:00      
   Use an NCO            01/01/70 00:00      
      Microcontroller emulates NCOs            01/01/70 00:00      
         Nice but...            01/01/70 00:00      
            we can think of something            01/01/70 00:00      
         nothing special            01/01/70 00:00      
   how about a PLL (Phase Locked Loop)            01/01/70 00:00      
      PLL            01/01/70 00:00      
         0 ?            01/01/70 00:00      
            Part no?            01/01/70 00:00      
               Clock speed            01/01/70 00:00      
            0 Hz Frequency            01/01/70 00:00      
               Differenece between...            01/01/70 00:00      
   If Max is 1 kHz, ...            01/01/70 00:00      
      more details            01/01/70 00:00      
         Difficult !            01/01/70 00:00      
   8253?            01/01/70 00:00      
      Mode 3            01/01/70 00:00      
         mode 3 again            01/01/70 00:00      
      Example            01/01/70 00:00      
         1MHz / 1001            01/01/70 00:00      
            Concretely...            01/01/70 00:00      
      Overview of functions            01/01/70 00:00      
      What do you think?            01/01/70 00:00      
         why not '52?            01/01/70 00:00      
            is it possible?            01/01/70 00:00      
         its an option            01/01/70 00:00      
   please i need to square wave osscillator            01/01/70 00:00      

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