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Section 18 Multi-Function Timer Pulse Unit (MTU)
Rev. 4.00 Sep. 14, 2005 Page 612 of 982
REJ09B0023-0400
Counter Clearing by another Channel: In complementary PWM mode, by setting a mode for
synchronization with another channel by means of the timer synchro register (TSYR), and
selecting synchronous clearing with bits CCLR2 to CCLR0 in the timer control register (TCR), it
is possible to have TCNT_3, TCNT_4, and TCNTS cleared by another channel.
Figure 18.49 illustrates the operation.
Use of this function enables counter clearing and restarting to be performed by means of an
external signal.
TGRA_3
TCDR
TDDR
H'0000
Channel 1
Input capture A
TCNT_1
TCNT_3
TCNT_4
TCNTS
Synchronous counter clearing by channel 1 input capture A
Figure 18.49 Counter Clearing Synchronized with Another Channel