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renaud23
Visitor II
April 11, 2003
Question

St92F150 errata sheet

  • April 11, 2003
  • 2 replies
  • 741 views
Posted on April 11, 2003 at 19:32

St92F150 errata sheet

    This topic has been closed for replies.

    2 replies

    R
    renaud23Author
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 11:33

    On page 5 of version 1.7 of the ST9F150/F250 Errata Sheet (Sept 2002),

    there is a work-around to correct software reset. It states to set the

    XT_DIV16 bit which is bit 1 but bit 1 is LOCK. XT_DIV16 is bit 4.

    Could you let me know which to set? XT_DIV16 or LOCK?

    Same question for CKAF_SEL which is bit 3

    J
    johan239955_stm1_stmicro
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 11:33

    You are correct regarding your first comment (that's a typo). CKAF_SEL is however located in bit 2 and not bit 3.

    You should have read :

    Before generating a software reset, select CLOCK2 as Internal Clock. To do this:

    – Reset the CSU_CKSEL bit (Bit 0 of CLK_FLAG, R242 page 55),

    – Set the XT_DIV16 bit (Bit 3 of CLK_FLAG, R242 page 55),

    – Reset the CKAF_SEL bit (Bit 2 of CLKCTL, R240, page 55).

    Jojo

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