Renesas RX100 Series User Manual page 435

RX13T Group
(i) Initial Output in Complementary PWM Mode
In complementary PWM mode, the initial output is determined by the setting of the OLSN and OLSP bits in the
TOCR1A register or the OLS1N to OLS3N and OLS1P to OLS3P bits in the TOCR2A register.
This initial output is the non-active level of the PWM output and continues from when complementary PWM mode is set
with the MTU3.TMDR1 until MTU4.TCNT exceeds the value set in the TDDRA register. Figure 19.51 shows an
example of the initial output in complementary PWM mode.
An example of the waveform when the initial PWM duty ratio value is smaller than the TDDRA value is shown in
Figure 19.52 .
Timer output control register settings
TOCR1A.OLSN bit = 0 (initial output: high; active level: low)
TOCR1A.OLSP bit = 0 (initial output: high; active level: low)
MTU3.TCNT
MTU4.TCNT
TCNTSA
Positive-phase
output
Negative-phase
output
Figure 19.51 Example of Initial Output in Complementary PWM Mode (MTU3 and MTU4) (1))
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
MTU3.TCNT
MTU4.TCNT
value
MTU4.TGRA
TDDRA
Initial output
Complementary
MTU3.TCNT
PWM mode
MTU4.TCNT
(TMDR1 setting)
count start
(TSTRA setting)
19. Multi-Function Timer Pulse Unit 3 (MTU3c)
MTU3.TCNT
MTU4.TCNT
Dead time
Active level
Time
Active level
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