MPASM configs changed for 18F4550


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  1. #1
    Join Date
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    Default MPASM configs changed for 18F4550

    Somewhere between MPASM v4.02 and v5.46, the Brown Out settings changed for the 18F4550.

    From this:
    _BORV_46_2L ; 4.6V
    _BORV_43_2L ; 4.3V
    _BORV_28_2L ; 2.8V
    _BORV_21_2L ; 2.1V


    to this:
    _BORV_0_2L EQU H'E7' ; Maximum setting
    _BORV_1_2L EQU H'EF' ;
    _BORV_2_2L EQU H'F7' ;
    _BORV_3_2L EQU H'FF' ; Minimum setting


    I'm not ready to assume it's a direct conversion (you never know). How do we know what the voltage settings are now?

    These are MPASM settings, it's not something we'll find in the PIC datasheet.

    Robert

  2. #2
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    Default Re: MPASM configs changed for 18F4550

    Data sheet section 28.1

    From the "Typ" column:
    _BORV_0_2L EQU H'E7' ; 4.59
    _BORV_1_2L EQU H'EF' ; 4.33
    _BORV_2_2L EQU H'F7' ; 2.79
    _BORV_3_2L EQU H'FF' ; 2.05
    Dave
    Always wear safety glasses while programming.

  3. #3
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    Default Re: MPASM configs changed for 18F4550

    Excellent!

    Never thought it would be in there.

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