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You are here: Home / Topics / on 8051 crystal frequency and relation between internal oscillator of the controller external frequency.

on 8051 crystal frequency and relation between internal oscillator of the controller external frequency.

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Microcontroller › 8051 › on 8051 crystal frequency and relation between internal oscillator of the controller external frequency.

  • This topic has 1 reply, 2 voices, and was last updated 11 years, 5 months ago by AJISH ALFRED.
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  • December 27, 2013 at 6:42 am #2780
    sandeep
    Participant

    why  we are  using only 11.0592MHZ by only crystal  oscillator,why not other oscillators?and why we are using external oscillators,in 8051 itself consists internal oscillators give reasons? 

     

     

     

     

     

     

    December 28, 2013 at 3:35 pm #10771
    AJISH ALFRED
    Participant

    Hi,

    Sounds like you a question from an exam.

    That particular frequecy can give 9600 baud rate which will give theoritically 0% error.

    External crystak oscillators are supposed to be more reliable. In most of the designs the internal oscillator is used as a back up only whenever the external oscillator fails.

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