R01UH0822EJ0100 Rev.1.00
Page 431 of 1041
Jul 31, 2019
RX13T Group
19. Multi-Function Timer Pulse Unit 3 (MTU3c)
(f)
Dead Time Suppressing
Dead time generation is suppressed by setting the TDER bit in the timer dead time enable register (TDERA) to 0.
TDERA can be set to 0 only when 0 is written to it after reading TDER = 1.
MTU3.TGRA and MTU3.TGRC should be set to 1/2 PWM 1 and the timer dead time data register (TDDRA)
should be set to 1.
By the above settings, PWM waveforms without dead time can be obtained.
shows an example of
operation without dead time (MTU3 and MTU4).
Figure 19.48
Example of Operation without Dead Time (MTU3 and MTU4)
TCNTSA
MTU3.TGRA
=TCDRA+1
TCDRA
0000h
Buffer register
MTU4.TGRC
Temporary register
Compare register
MTU4.TGRA
Positive-phase
output
Initial output
Initial output
Negative-phase
output
T
a
MTU3.TCNT
MTU4.TCNT
(Output waveform is active-low)
Data1
Data2
Data1
Data2
Data1
Data2
Transfer from temporary
register
to compare register
T
a
T
b1
T
b2
T
a
MTU4.TGRA
MTU4.TGRC
TDDRA
Transfer from temporary
register
to compare register
MTU3.TCNT
MTU4.TCNT
TCNTSA