R01UH0822EJ0100 Rev.1.00
Page 407 of 1041
Jul 31, 2019
RX13T Group
19. Multi-Function Timer Pulse Unit 3 (MTU3c)
shows examples of PWM waveform output with 0% duty and 100% duty in PWM mode 1.
In this example, TGRA compare match is set as the TCNT clearing source, a low level is set as the initial output value
and output value for TGRA, and a high level is set as the output value for TGRB.
Figure 19.28
Examples of PWM Mode Operation (PWM Waveform Output with 0% Duty and 100% Duty)
(n = 0 to 4)
Time
0% duty
TGRB modified
Output does not change when compare
matches occur simultaneously in period
register and duty register
0% duty
TCNT value TGRB modified
TGRA
0000h
MTIOCnA
TGRB
TGRA
0000h
MTIOCnA
TGRB
TGRA
0000h
MTIOCnA
TGRB
Time
Time
100% duty
TCNT value
TGRB modified
TGRB modified
TGRB modified
TGRB modified
100% duty
TGRB modified
TCNT value
TGRB modified
Output does not change when compare
matches occur simultaneously in period
register and duty register
TGRB modified
Because there is no signal
change, waveform does not
change even if 1 is output when
second TGRB compare match
occurs
(1) Example of operation to output the PWM waveform with 0% duty cycle.
(2) Example of operation to output the PWM waveform with 100% duty cycle.
(3) Example of operation to output the PWM waveform with 0% duty cycle after the output with 100% duty cycle.