Renesas RX100 Series User Manual page 439

RX13T Group
(k) 0% and 100% Duty Ratio Output in Complementary PWM Mode
In complementary PWM mode, 0% and 100% duty PWM output can be output as required. Figure 19.56 to Figure
19.60 show output examples.
A 100% duty waveform is output when the compare register value is set to 0000h. The waveform in this case has a
positive phase with a 100% on-state. A 0% duty waveform is output when the compare register value is set to the same
value as MTU3.TGRA. The waveform in this case has a positive phase with a 100% off-state.
Turn-on and turn-off compare matches occur simultaneously, but if a turn-on compare match and turn-off compare match
for the same phase occur simultaneously, both compare matches are ignored and the waveform does not change.
MTU3.TGRA
TCDRA
MTU4.TGRA
TDDRA
0000h
Positive-phase
output
Negative-phase
output
Figure 19.56 Example of 0% and 100% Waveform Output in Complementary PWM Mode
(MTU3 and MTU4) (1)
MTU3.TGRA
TCDRA
MTU4.TGRA
TDDRA
0000h
Positive-phase
output
Negative-phase
output
Figure 19.57 Example of 0% and 100% Waveform Output in Complementary PWM Mode
(MTU3 and MTU4) (2)
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
T1 interval
c d
TEMP2
a
b
0% duty ratio output
Don't care
ON
OFF
100% duty ratio output
T1 interval
a b
TEMP2
100% duty ratio output
OFF
0% duty ratio output
19. Multi-Function Timer Pulse Unit 3 (MTU3c)
T2 interval T1 interval
a'
OFF
Output waveform is active-low.
Buffer operation is set for transfer at the crest and trough.
T2 interval T1 interval
c
OFF
OFF
Output waveform is active-low.
Buffer operation is set for transfer at the crest and trough.
Counter for generating
a turn-off timing
Counter for generating
a turn-on timing
b'
ON
Counter for generating
a turn-off timing
Counter for generating
a turn-on timing
a b
d
ON
Don't care
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