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f149边沿捕获

Other Parts Discussed in Thread: MSP430F149

能引发中断的跃变最小范围是多少?

  • 你是说跃变的时间么?

    我记得MSP430F149管脚捕获的最小时间是50-62ns. 在数据手册中有这个参数。这个参数的实际意义是从管脚跳变后到中断标志置位的时间,实际触发中断需要的时间会更短,但为了确保中断触发有效,设计是尽量不要低于这个值。