
364
•
Initial output in complementary PWM mode
In complementary PWM mode, the initial output is determined by the setting of bits OLSN and
OLSP in the timer output control register (TOCR).
This initial output is the PWM pulse non-active level, and is output from when complementary
PWM mode is set with the timer mode register (TMDR) until TCNT4 exceeds the value set in
the dead time register (TDDR). Figure 12.43 shows an example of the initial output in
complementary PWM mode.
An example of the waveform when the initial PWM duty value is smaller than the TDDR
value is shown in figure 12.44.
Timer output control register settings
OLSN bit: 0 (initial output: high; active level: low)
OLSP bit: 0 (initial output: high; active level: low)
TCNT3, 4 value
TGR4A
TDDR
TCNT3
TCNT4
Initial output
Dead time
Time
Active level
Active level
TCNT3, 4 count start
(TSTR setting)
Complementary
PWM mode
(TMDR setting)
Positive phase
output
Negative phase
output
Figure 12.43 Example of Initial Output in Complementary PWM Mode (1)
Summary of Contents for SH7041 Series
Page 2: ......
Page 6: ......
Page 38: ...xvi ...
Page 44: ...6 ...
Page 46: ...8 ...
Page 48: ...10 ...
Page 82: ...44 ...
Page 114: ...76 ...
Page 118: ...80 ...
Page 124: ...86 ...
Page 170: ...132 ...
Page 250: ...212 ...
Page 492: ...454 ...
Page 506: ...468 ...
Page 604: ...566 ...
Page 684: ...646 ...
Page 706: ...668 ...
Page 778: ...740 ...
Page 780: ...742 ...
Page 818: ...780 ...
Page 850: ...812 ...
Page 923: ...SH7040 SH7041 SH7042 SH7043 SH7044 SH7045 Group Hardware Manual REJ09B0044 0600O ...