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Section 18 Multi-Function Timer Pulse Unit (MTU)
Rev. 4.00 Sep. 14, 2005 Page 619 of 982
REJ09B0023-0400
18.6 Operation Timing
18.6.1 Input/Output Timing
TCNT Count Timing: Figure 18.54 shows TCNT count timing in internal clock operation, and
figure 18.55 shows TCNT count timing in external clock operation (normal mode), and figure
18.56 shows TCNT count timing in external clock operation (phase counting mode).
TCNT
TCNT input
clock
Internal clock
Pφ
N-1 N N+1 N+2
Falling edge
Rising edge
Figure 18.54 Count Timing in Internal Clock Operation
TCNT
TCNT input
clock
External clock
Pφ
N-1 N N+1 N+2
Falling edge
Rising edge
Falling edge
Figure 18.55 Count Timing in External Clock Operation