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msp430c09x BOR and RAM retention

paul alves
Prodigy 120 points

is there an app not on the operation of this mcu during brown out reset? what is the reset sequence etc? I cant understand the bor table in the data sheet for this IC.

what is V(BOR_IT+)?

What is V(BOR_IT-)?

What exactly is VRET?

What does "tracks BOL level" mean?

what voltage may is start to loose RAM?

what voltage will i definitely have lost RAM?

etc, etc...

thanks.

  • 0
    TI__Genius 14875 points

    Hi Paul,

    You can find definitions and reset diagrams in Chapter one, (currently page 13) of the User's Guide:

     http://www.ti.com/lit/ug/slau321/slau321.pdf

    what is V(BOR_IT+)?

    This is the BOR off voltage , Where Vcc is rising

    What is V(BOR_IT-)?

    This is the BOR on voltage, where Vcc is falling.

    What exactly is VRET? 

    V_Retention

    What does "tracks BOL level" mean?

    I believe this is indicating that it Tracks and stays below the Brown Out level. This way, you issue a Brown out Reset before you begin to lose retention. I will confirm, though.

    what voltage may is start to loose RAM?

    VRET

    what voltage will i definitely have lost RAM?

    We cannot make any guarantees below VRET. Please use it as an absolute.

    If that answers your questions, please click Mark as Answer below.

    Thank you!

    Cameron

  • 0 in reply to Cameron LaFollette
    TI__Genius 14875 points
    Paul,
    May I close this issue out, or do you have any other questions?

    Cameron

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