Datasheet

Section 13 Timer Z
Rev.5.00 Nov. 02, 2005 Page 247 of 500
REJ09B0027-0500
6. Contention between Count Clearing and Increment Operations by Input Capture: If an input
capture and increment signals are simultaneously generated, count clearing by the input
capture operation has priority without an increment operation. The TCNT contents before
clearing counter are transferred to GR. Figure 13.57 shows the timing in this case.
TCNT
Input capture signal
Counter clear signal
TCNT input clock
Clearing has priority.
N
H'0000
GR
N
φ
Figure 13.57 Contention between Count Clearing and Increment Operations
by Input Capture