mc9s08ac32 Freescale Semiconductor, Inc, mc9s08ac32 Datasheet - Page 262

• Manufacturer Part Number: mc9s08ac32
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 15 Timer/PWM Module (S08TPMV3)
When the TPM is configured for center-aligned PWM (and ELSnB:ELSnA not = 0:0), the data direction
for all channels in this TPM are overridden, the TPMxCHn pins are forced to be outputs controlled by the
TPM, and the ELSnA bits control the polarity of each TPMxCHn output. If ELSnB:ELSnA=1:0, the
corresponding TPMxCHn pin is cleared when the timer counter is counting up, and the channel value
register matches the timer counter; the TPMxCHn pin is set when the timer counter is counting down, and
the channel value register matches the timer counter. If ELSnA=1, the corresponding TPMxCHn pin is set
when the timer counter is counting up and the channel value register matches the timer counter; the
TPMxCHn pin is cleared when the timer counter is counting down and the channel value register matches
the timer counter.
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TPMxCNTH:TPMxCNTL
TPMxCNTH:TPMxCNTL
TPMxMODH:TPMxMODL = 0x0008
TPMxMODH:TPMxMODL = 0x0005
TPMxMODH:TPMxMODL = 0x0008
TPMxMODH:TPMxMODL = 0x0005
TPMxCHn
TPMxCHn
CHnF BIT
CHnF BIT
TOF BIT
TOF BIT
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Figure 15-5. High-True Pulse of a Center-Aligned PWM
Figure 15-6. Low-True Pulse of a Center-Aligned PWM
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MC9S08AC60 Series Data Sheet, Rev. 2
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Freescale Semiconductor
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