R01UH0822EJ0100 Rev.1.00
Page 439 of 1041
Jul 31, 2019
RX13T Group
19. Multi-Function Timer Pulse Unit 3 (MTU3c)
(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.
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.
Figure 19.56
Example of 0% and 100% Waveform Output in Complementary PWM Mode
(MTU3 and MTU4) (1)
Figure 19.57
Example of 0% and 100% Waveform Output in Complementary PWM Mode
(MTU3 and MTU4) (2)
a
b
c
d
a'
b'
MTU3.TGRA
TCDRA
TDDRA
0000h
Positive-phase
output
Negative-phase
output
Output waveform is active-low.
Buffer operation is set for transfer at the crest and trough.
MTU4.TGRA
TEMP2
ON
OFF
ON
OFF
Don't care
0% duty ratio output
100% duty ratio output
T1 interval
T2 interval
T1 interval
Counter for generating
a turn-off timing
Counter for generating
a turn-on timing
a
d
a
b
b
MTU3.TGRA
TCDRA
TDDRA
0000h
Positive-phase
output
Negative-phase
output
Output waveform is active-low.
Buffer operation is set for transfer at the crest and trough.
MTU4.TGRA
TEMP2
ON
OFF
OFF
OFF
Don't care
100% duty ratio output
0% duty ratio output
c
T1 interval
T2 interval
T1 interval
Counter for generating
a turn-off timing
Counter for generating
a turn-on timing