mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 395

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

To calculate the output period, take the selected clock source period for the channel of interest (A, B, SA,
or SB) and multiply it by the value in the period register for that channel:
For boundary case programming values, please refer to
Freescale Semiconductor
Reset
Reset
Reset
Reset
Reset
•
•
•
W
W
W
W
W
R
R
R
R
R
Left aligned output (CAEx = 0)
PWMx period = channel clock period * PWMPERx center aligned output (CAEx = 1)
PWMx period = channel clock period * (2 * PWMPERx)
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
0
0
0
0
0
7
7
7
7
7
Figure 12-21. PWM Channel Period Registers (PWMPER0)
Figure 12-22. PWM Channel Period Registers (PWMPER1)
Figure 12-23. PWM Channel Period Registers (PWMPER2)
Figure 12-24. PWM Channel Period Registers (PWMPER3)
Figure 12-25. PWM Channel Period Registers (PWMPER4)
6
0
6
0
6
0
6
0
6
0
6
6
6
6
6
MC9S12E256 Data Sheet, Rev. 1.08
5
0
5
0
5
0
5
0
5
0
5
5
5
5
5
4
0
4
0
4
0
4
0
4
0
4
4
4
4
4
Section 12.4.2.8, “PWM Boundary Cases.”
3
3
0
3
3
0
3
3
0
3
3
0
3
3
0
Chapter 12 Pulse-Width Modulator (PWM8B6CV1)
2
0
2
0
2
0
2
0
2
0
2
2
2
2
2
1
0
1
0
1
0
1
0
1
0
1
1
1
1
1
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
0
0
0
0
0
0
0
0
0
0
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