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Visitor II
February 20, 2004
Question

Halt Mode

  • February 20, 2004
  • 2 replies
  • 604 views
Posted on February 20, 2004 at 01:32

Halt Mode

    This topic has been closed for replies.

    2 replies

    Visitor II
    February 17, 2004
    Posted on February 17, 2004 at 06:29

    Hello

    We need to wake-up the ST7Superlite an the lowest power mode - Halt to Run mode within less then 10usec .

    The operation will be using internal RC OSC no need for PLL function .

    Pl's advice worst case Tstartup .

    Thanks

    Latino
    Visitor II
    February 20, 2004
    Posted on February 20, 2004 at 01:32

    When cpu exits the halt mode, the internal oscillator is immediately startup and then it takes 256 cpu clock cycles i.e. the clock stabilization time plus the vector fetch time(10 cpu cycles).

    Note: If the PLL is on, then you also have to take into account the PLL startup time.