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Hitachi H8/3692 ユーザーズマニュアル

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Rev. 1.0, 07/01, page 168 of 372
TCNT value
GRA
H'0000
FTIOB
Time
GRB
Duty 0%
Write to GRB
Write to GRB
TCNT value
GRA
H'0000
FTIOB
Time
GRB
Duty 100%
Write to GRB
Write to GRB
Output does not change when cycle register 
and duty register compare matches occur 
simultaneously.
TCNT value
GRA
H'0000
FTIOB
Time
GRB
Duty 100%
Write to GRB
Write to GRB
Write to GRB
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Duty 0%
Write to GRB
Figure 12-12   PWM Mode Example
(TOB=0, TOC=0, TOD=0: initial output values are set to 0)