<>你用的是不是mc9s12dg128的mcu?</P><P>如果是的话,在mc9s12dg128核心资料中的ECT16B8-Timer.pdf有这样一段:</P><P>3.3.11 TSCR2 — Timer System Control Register 2</P><P>PR2, PR1, PR0 — Timer Prescaler Select</P><P>These three bits specify the number of ÷2 stages that are to be inserted between the bus clock and the main timer counter.</P><P>以上在ECT16B8-Timer.pdf的25-26页.</P>
发表于 2008-5-13 05:04:58
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>你用的是不是mc9s12dg128的mcu?</P><P>如果是的话,在mc9s12dg128核心资料中的ECT16B8-Timer.pdf有这样一段:</P><P>3.3.11 TSCR2 — Timer System Control Register 2</P><P>PR2, PR1, PR0 — Timer Prescaler Select</P><P>These three bits specify the number of ÷2 stages that are to be inserted between the bus clock and the main timer counter.</P><P>以上在ECT16B8-Timer.pdf的25-26页.</P>