HD64F2149YV datasheet(320/1075 Pages) RENESAS

320 / 1075 page

Section 9 8-Bit PWM Timers

Rev. 3.00 Jan 18, 2006 page 292 of 1044

REJ09B0280-0300

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 Bits 012345678910

0000

0001

Yes

0010

Yes

0011

Yes

0100

Yes

0101

Yes

0110

Yes

0111

Yes

1000

Yes

1001

Yes

Yes Yes Yes

1010

Yes

Yes Yes Yes

Yes

Yes Yes Yes

1011

Yes

Yes Yes Yes

1100

Yes Yes Yes

1101

Yes Yes Yes

Yes Yes Yes Yes Yes Yes Yes

1110

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)

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