Datasheet

380
12.6 Operation Timing
12.6.1 Input/Output Timing
TCNT Count Timing: Count timing for the TCNT counter with internal clock operation is shown
in figure 12.59. Count timing with external clock operation (normal mode) is shown in figure
12.60, and figure 12.61 shows count timing with external clock operation (phase counting mode).
TCNT
input
clock
Internal
clock
TCNT
φ
Falling edge
Falling edgeRising edge
N – 1 N N + 1 N + 2
Figure 12.59 TCNT Count Timing during Internal Clock Operation
TCNT
input
clock
External
clock
TCNT
φ
Falling edge
Falling edgeRising edge
N – 1 N N + 1 N + 2
Figure 12.60 TCNT Count Timing during External Clock Operation (Normal Mode)