单项选择题
A.0~9999HB.0~10000HC.1~10000HD.1~9999H
A.1μs和3μsB.3μs和lμsC.2μs和2μsD.lμs和1μs
A.OUT引脚可输出周期重复的窄脉冲B.OUT引脚可输出周期重复的对称方波C.OUT引脚可输出宽度可编程的负单脉冲D.OUT引脚可输出宽度可编程的正单脉冲
A.8254B.8250C.8255AD.8259a
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