HD64F3664FPV Datasheet, PDF (209/446 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 12 Timer W
Figures 12.12 and 12.13 show examples of the output of PWM waveforms with duty cycles of 0%
and 100%.
TCNT value
Write to GRB
GRA
GRB
H'0000
FTIOB
Write to GRB
Duty 0%
Time
TCNT value
GRA
Write to GRB
GRB
H'0000
FTIOB
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Write to GRB
Write to GRB
Duty 100%
Time
TCNT value
GRA
Write to GRB
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Write to GRB
GRB
H'0000
FTIOB
Duty 100%
Duty 0%
Write to GRB
Time
Figure 12.12 PWM Mode Example
(TOB, TOC, and TOD = 0: initial output values are set to 0)
Rev. 6.00 Mar. 24, 2006 Page 179 of 412
REJ09B0142-0600