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???
08/25/05 12:16
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#100066 - if speed is an issue
Responding to: ???'s previous message
You will find its probably impossible to get real time image performance off PWM anyway. Think of the speed with which you need to change the PWM output, as a function of the PWM frequency, and think how long the filter has to act on that before you change duty cycles.

if speed is an issue, have a look at the SILabs F12x which has a PCA that can run at 100MHz!
For general PCA info see The PCA cookbook
http://www.intel.com/design/mc...270609.htm

The SILabs PCA is basically identical (the only differnce I have found is the clocking)

Erik



List of 14 messages in thread
TopicAuthorDate
Laser projecter / 8051 timer/PWM            01/01/70 00:00      
   Doubtful            01/01/70 00:00      
      if speed is an issue            01/01/70 00:00      
         DAC            01/01/70 00:00      
   To reduce the data amount to transfer            01/01/70 00:00      
   table            01/01/70 00:00      
      No free lunch!            01/01/70 00:00      
         understandable            01/01/70 00:00      
      table and another approach...            01/01/70 00:00      
   VC program finished            01/01/70 00:00      
      Interrupt-driven Serial IO            01/01/70 00:00      
         stuck in a rut as so amny before you, wh            01/01/70 00:00      
            F120 overkill            01/01/70 00:00      
               that may be, but the proposed 12 clocker            01/01/70 00:00      

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