HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 385

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Figure 10-53 shows an example in which GRB3 is buffered by BRB3 in complementary PWM
mode. Buffering is used to set GRB3 to a higher value than GRA3, generating a PWM waveform
with 0% duty cycle. The BRB3 value is transferred to GRB3 when TCNT3 matches GRA3, and
when TCNT4 underflows.
Figure 10-53 Register Buffering (Example 3: Buffering in Complementary PWM Mode)
H'1FFF
GRA3
H'0999
H'0000
BRB3
GRB3
TIOCA
TIOCB
TCNT3 and
TCNT4 values
3
3
H'0999
H'0999
H'0999
TCNT3
TCNT4
H'1FFF
373
H'1FFF
H'1FFF
H'0999
H'0999
GRB3
Time