HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 265

• Manufacturer Part Number: HD6432160
• Description: Hitachi 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

9.4
The upper four bits of PWDR specify the duty cycle of the basic pulse as 0/16 to 15/16 with a
resolution of 1/16. Table 9.4 shows the duty cycles of the basic pulse.
Table 9.4
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 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.
Upper 4 Bits
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
Operation
Duty Cycle of Basic Pulse
0 1 2 3 4 5 6 7 8 9 A B C D E F 0
Basic Pulse Waveform (Internal)
Rev. 2.0, 08/02, page 225 of 788