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You are here: Home / Replies /     because this value give

    because this value give

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Microcontroller › 8051 › 1 ms delay calculation ›     because this value give

October 13, 2011 at 6:52 am #6707
Qaisar
Participant

 

   because this value give almost 1ms delay ..

 

  let if we use 11.0592MHz crystal ..

u know 8051 takes 12 pulses for 1 machine cycle

then period of one machine cycle would be 

 

 11.0592MHz/12 = 921.6KHz

 t = 1/f

so time period of one machine cycle = 1/ 921.6KHz = 1.085us

 

 now when u run loop of 1275..

 delay would be 1275×1.085us = 1.3ms

 practically this value gives delay of almost 1ms… 

 

correct me ……..

 

 

regards

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