SH7032 Datasheet, PDF (304/687 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 10 16-Bit Integrated Timer Pulse Unit (ITU)
TCNT3, TCNT4 value
GRA3
GRB3
TIOCA3
TIOCB3
TCNT3, TCNT4 value
GRA3
GRB3
0% duty
(a) With 0% duty
Time
TIOCA3
Time
TIOCB3
100% duty
(b) With 100% duty
Figure 10.35 Complementary PWM Mode Operation Example 2
At the point where the up-count/down-count changes in complementary PWM mode, TCNT3 and
TCNT4 will overshoot and undershoot, respectively. When this occurs, the setting conditions for
the IMFA bit of channel 3 and the overflow flag (OVF) of channel 4 are different from usual.
Transfer conditions for the buffer also differ. The timing is as shown in figures 10.36 and 10.37.
Rev. 7.00 Jan 31, 2006 page 278 of 658
REJ09B0272-0700