SH7641 Datasheet, PDF (658/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Section 18 Multi-Function Timer Pulse Unit (MTU)
Complementary PWM Mode 0% and 100% Duty Output: In complementary PWM mode, 0%
and 100% duty cycles can be output as required. Figures 18.43 to 18.47 show output examples.
100% duty output is performed when the data register value is set to H'0000. The waveform in this
case has a positive phase with a 100% on-state. 0% duty output is performed when the data
register value is set to the same value as TGRA_3. The waveform in this case has a positive phase
with a 100% off-state.
On and 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.
TGRA_3
T1 period
c
d
T2 period
T1 period
TCDR
a
b
TDDR
a'
b'
H'0000
Positive phase
Negative phase
Figure 18.43 Example of Complementary PWM Mode 0% and 100% Waveform Output (1)
Rev. 4.00 Sep. 14, 2005 Page 608 of 982
REJ09B0023-0400