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A timer in capture mode

  • A.records the counter value when an input edge arrives
  • B.changes the state of an output pin when the counter reaches a preset value
  • C.counts external pulses rather than clock cycles
  • D.reloads itself automatically on overflow

Answer: A

Capturing the count at the instant of an edge measures the time between events with the resolution of the timer clock and no software latency at all. Compare mode is the complementary output function, and pulse counting is a third distinct mode.

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