MC9S12E32CFU FREESCALE [Freescale Semiconductor, Inc], MC9S12E32CFU Datasheet - Page 360

• Manufacturer Part Number: MC9S12E32CFU
• Description: HCS12 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 11 Pulse Width Modulator with Fault Protection (PMF15B6CV2)
Center-aligned operation is illustrated in
Edge-aligned operation is illustrated in
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PWM pulse width = (PWM value) (PWM clock period) 2
PWM pulse width = (PWM value) (PWM clock period)
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
MC9S12E128 Data Sheet, Rev. 1.07
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Figure
Figure
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1 2 3 0
4
11-46.
11-45.
3
2
1
0
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4
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Freescale Semiconductor
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