Figure 9.2 Example Of Additional Pulse Timing (When Upper 4 Bits Of Pwdr = B'1000); Table 9.5 Position Of Pulses Added To Basic Pulses - Renesas H8S Series Hardware Manual

16-bit single-chip microcomputer

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The lower four bits of PWDR specify the position of pulses added to the 16 basic pulses. An

additional pulse adds a high period (when OS = 0) with a width equal to the resolution before the

rising edge of a basic pulse. When the upper four bits of PWDR are B'0000, there is no rising edge

of the basic pulse, but the timing for adding pulses is the same. Table 9.5 shows the positions of

the additional pulses added to the basic pulses, and figure 9.2 shows an example of additional

pulse timing.

Position of Pulses Added to Basic Pulses

Lower 4 Bits 0

Yes Yes Yes Yes Yes Yes Yes

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

No additional pulse

With additional pulse

Figure 9.2 Example of Additional Pulse Timing (When Upper 4 Bits of PWDR = B'1000)

Resolution width

Additioal pulse

Section 9 8-Bit PWM Timer (PWM)

Basic Pulse No.

Yes Yes Yes Yes Yes Yes Yes

Rev. 3.00 Jul. 14, 2005 Page 255 of 986

REJ09B0098-0300

H8s/2100 series H8s/2114r R4f2114r