Datasheet

Section 12 Timer Z
Rev. 4.00 Mar. 15, 2006 Page 240 of 556
REJ09B0026-0400
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 12.57 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 12.57 Contention between Count Clearing and Increment Operations
by Input Capture