269
6. GRA3 is the waveform period register. Set the waveform period value in GRA3. Set the
transition times of the PWM output waveforms in GRB3, GRA4, and GRB4. Set times within
the compare match range of TCNT3.
X ≤ GRA3 (X: set value)
7. Set the STR3 bit in TSTR to 1 to start the TCNT3 count.
(1)
(2)
(3)
(4)
(5)
(6)
Stop counting
Select counter clock
Start counting
Select counter clear source
Reset synchronized
PWM mode
Select reset-synchronized
PWM mode
Set TCNT
Set general registers
(7)
Reset-synchronized PWM mode
Figure 10.31 Procedure for Selecting Reset-Synchronized PWM Mode
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