Hitachi H8/3672 Series Hardware Manual page 165

TCNT value
Write to GRB
GRA
GRB
H'0000
FTIOB
TCNT value
Write to GRB
GRA
GRB
H'0000
FTIOB
TCNT value
Write to GRB
GRA
GRB
H'0000
FTIOB
(TOB=1, TOC=1,and TOD=1: initial output values are set to 1)
Duty 100%
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Write to GRB
Duty 0%
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Write to GRB
Duty 0%
Figure 11-13 PWM Mode Example
Write to GRB
Write to GRB
Duty 100%
Rev. 1.0, 03/01, page 141 of 280
Time
Time
Write to GRB
Time