279
TCNT2 value
Increment Decrement
TCLKB
TCLKA
TCNT2
Time
Figure 10.43 Phase Counting Mode Operation
Table 10.16 Up/Down-Counting Conditions
Counting
Direction Increment Decrement
TCLKB Rising High Falling Low Rising High Falling Low
TCLKA Low Rising High Falling High Falling Low Rising
TCLKA
TCLKB
Phase
differential
Phase differential, overlap: 1.5 cycles minimum
Pulse width: 2.5 cycles minimum
Phase
differential
Pulse
width
Pulse
width
Overlap Overlap
Figure 10.44 Phase Differentials, Overlap, and Pulse Width in Phase Counting Mode
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