CHAPTER 14 PORT FUNCTIONS
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User’s Manual U14492EJ3V0UD
Figure 14-14. Example of Noise Elimination Timing
Noise elimination clock
Input signal
Internal signal
Timers 1 to 3 rising
edge detection
Timers 1 to 3 falling
edge detection
2 clocks 2 clocks
5 clocks
5 clocks
4 clocks
4 clocks
3 clocks
3 clocks
Caution
If there are three or less noise elimination clocks while the timers 1 to 3 input signals
are high level (or low level), the input pulse is eliminated as noise. If it is sampled at
least four times, the edge is detected as valid input.
Содержание V850E/IA1 mPD703116
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