HD643303x Hitachi, HD643303x Datasheet - Page 248

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

Figure 8-36 shows examples of waveforms with 0% and 100% duty cycles (in one phase) in
complementary PWM mode. In this example the outputs change at compare match with GRB3, so
waveforms with duty cycles of 0% or 100% can be output by setting GRB3 to a value larger than
GRA3. The duty cycle can be changed easily during operation by use of the buffer registers. For
further information see section 8.4.8, Buffering.
GRA3
GRB3
H'0000
TIOCA3
TIOCB3
GRA3
GRB3
H'0000
TIOCA3
TIOCB3
TCNT3 and
TCNT4 values
TCNT3 and
TCNT4 values
Figure 8-36 Operation in Complementary PWM Mode (Example 2)
100% duty cycle
(when OLS3 = OLS4 = 1)
0% duty cycle
b. 100% duty cycle
a. 0% duty cycle
233
Time
Time