Chapter 12 Pulse-Width Modulator (S12PWM8B8CV1)
MC9S12XDP512 Data Sheet, Rev. 2.11
566 Freescale Semiconductor
12.3.2.1 PWM Enable Register (PWME)

Each PWM channel has an enable bit (PWMEx) to start its waveform output. When any of the PWMEx

bits are set (PWMEx = 1), the associated PWM output is enabled immediately. However, the actual PWM

waveform is not available on the associated PWM output until its clock source begins its next cycle due to

the synchronization of PWMEx and the clock source.

NOTE

The first PWM cycle after enabling the channel can be irregular.

0x001A
PWMPER6
RBit 7 6 5 4 3 2 1 Bit 0
W
0x001B
PWMPER7
RBit 7 6 5 4 3 2 1 Bit 0
W
0x001C
PWMDTY0
RBit 7 6 5 4 3 2 1 Bit 0
W
0x001D
PWMDTY1
RBit 7 6 5 4 3 2 1 Bit 0
W
0x001E
PWMDTY2
RBit 7 6 5 4 3 2 1 Bit 0
W
0x001F
PWMDTY3
RBit 7 6 5 4 3 2 1 Bit 0
W
0x0010
PWMDTY4
RBit 7 6 5 4 3 2 1 Bit 0
W
0x0021
PWMDTY5
RBit 7 6 5 4 3 2 1 Bit 0
W
0x0022
PWMDTY6
RBit 7 6 5 4 3 2 1 Bit 0
W
0x0023
PWMDTY7
RBit 7 6 5 4 3 2 1 Bit 0
W
0x0024
PWMSDN
RPWMIF PWMIE 0PWMLVL 0 PWM7IN PWM7INL PWM7ENA
W PWMRSTRT
1Intended for factory test purposes only.
Register
Name Bit 7 6 5 4 3 2 1 Bit 0
= Unimplemented or Reserved

Figure 12-2. PWM Register Summary (Sheet 3 of 3)