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You are here: Home / Topics / Fuse Bytes Configuration

Fuse Bytes Configuration

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Microcontroller › AVR › Fuse Bytes Configuration

  • This topic has 3 replies, 3 voices, and was last updated 11 years, 4 months ago by hardeep.
Viewing 4 posts - 1 through 4 (of 4 total)
  • Author
    Posts
  • March 26, 2011 at 12:21 pm #826
    hardeep
    Participant

     

    I am using external 12Mhz crystal…please help to to configure the Fuse bits…
     
    I had programmed the fuse bits as 
    CLKSEL3..0 = 1000
     
    SUT0…1 = 01
     
    The controller is getting locked…
    Plz Help me…!!!
    March 27, 2011 at 8:11 am #5813
    Amit Joshi
    Participant

     you are using high freq. range external crystal so CLKSEL3..0 will be 1111 and it is better to configure the controller at 16k ck+ 64 ms start-up time so SUT will be 11.

     so overall fuse byte will be  higher byte=0xFF,  lower byte = 0x89

     

    If u want to disable the JTAG, the fuse byte will be  higher byte=0xFF,  lower byte = 0xC9.

     

    In try these configurations. if u asre not able to program the controller the SPIEN might be disabled. this bit enable/disables the serial programing of the controller. to enable it parallel programmer is needed. 

    March 28, 2011 at 8:33 am #5824
    dagakshay
    Participant

    refer here for the details of fuse bits configuration:

    http://www.engineersgarage.com/tutorials/avr-atmega16-fuse-bits

    March 28, 2011 at 3:17 pm #5829
    hardeep
    Participant

    Thanks a lot…!!! It helped me…

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