Datasheet

Section 9 8-Bit PWM Timers
Rev. 4.00 Sep 27, 2006 page 290 of 1130
REJ09B0327-0400
The lower 4 bits of PWDR specify the position of pulses added to the 16 basic pulses, as shown in
table 9.5. An additional pulse consists of a high period (when OS = 0) with a width equal to the
resolution, added before the rising edge of a basic pulse. When the upper 4 bits of PWDR are
0000, there is no rising edge of the basic pulse, but the timing for adding pulses is the same.
Table 9.5 Position of Pulses Added to Basic Pulses
Basic Pulse No.
Lower 4 Bits0123456789101112131415
0000
0001 Yes
0010 Yes Yes
0011 Yes Yes Yes
0100 Yes Yes Yes Yes
0101 Yes Yes Yes Yes Yes
0110 Yes Yes Yes Yes Yes Yes
0111 Yes Yes Yes Yes Yes Yes Yes
1000 Yes Yes Yes Yes Yes Yes Yes Yes
1001 Yes Yes Yes Yes Yes Yes Yes Yes Yes
1010 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1011 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1100 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1101 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1110 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1111 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Additional pulse provided
No additional pulse
Resolution width
Additional pulse
Figure 9.2 Example of Additional Pulse Timing (when Upper 4 Bits of PWDR = 1000)