mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 356

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 11 Pulse Width Modulator with Fault Protection (PMF15B6CV2)
Center-aligned operation is illustrated in
Edge-aligned operation is illustrated in
356
PWM pulse width = (PWM value)
PWM pulse width = (PWM value)
UP/DOWN COUNTER
PWM VALUE = 0
PWM VALUE = 1
PWM VALUE = 2
PWM VALUE = 3
PWM VALUE = 4
MODULUS = 4
COUNT
4/4 = 100%
1/4 = 25%
2/4 = 50%
3/4 = 75%
0/4 = 0%
PWM VALUE = 0
PWM VALUE = 1
PWM VALUE = 2
PWM VALUE = 3
PWM VALUE = 4
Figure 11-45. Center-Aligned PWM Pulse Width
Figure 11-46. Edge-Aligned PWM Pulse Width
MODULUS = 4
UP COUNTER
0
4/4 = 100%
1/4 = 25%
2/4 = 50%
3/4 = 75%
1
0/4 = 0%
COUNT
MC9S12E256 Data Sheet, Rev. 1.08
2
Figure
Figure
3
(PWM clock period) 2
(PWM clock period)
1 2 3 0
4
11-46.
11-45.
3
2
1
0
1
2
3
4
3
Freescale Semiconductor
2
1