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MC9S12VR-Family - Data Sheet - Freescale Semiconductor

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Timer Module (TIM16B8CV3)<br />

NOTE<br />

Reading the pulse accumulator counter registers immediately after an active<br />

edge on the pulse accumulator input pin may miss the last count because the<br />

input has to be synchronized with the bus clock first.<br />

12.3.2.18 Output Compare Pin Disconnect Register(OCPD)<br />

Module Base + 0x002C<br />

R<br />

W<br />

Read: Anytime<br />

Write: Anytime<br />

All bits reset to zero.<br />

12.3.2.19 Precision Timer Prescaler Select Register (PTPSR)<br />

Read: Anytime<br />

Write: Anytime<br />

All bits reset to zero.<br />

7 6 5 4 3 2 1 0<br />

OCPD7 OCPD6 OCPD5 OCPD4 OCPD3 OCPD2 OCPD1 OCPD0<br />

Reset 0 0 0 0 0 0 0 0<br />

Figure 12-28. Output Compare Pin Disconnect Register (OCPD)<br />

Table 12-22. OCPD Field Description<br />

Note: Bits related to available channels have functional significance. Writing to unavailable bits has no effect. Read from<br />

unavailable bits return a zero.<br />

Field Description<br />

OCPD[7:0}<br />

Module Base + 0x002E<br />

R<br />

W<br />

Output Compare Pin Disconnect Bits<br />

0 Enables the timer channel port. Output Compare action will occur on the channel pin. These bits do not affect<br />

the input capture or pulse accumulator functions<br />

1 Disables the timer channel port. Output Compare action will not occur on the channel pin, but the output<br />

compare flag still become set.<br />

7 6 5 4 3 2 1 0<br />

PTPS7 PTPS6 PTPS5 PTPS4 PTPS3 PTPS2 PTPS1 PTPS0<br />

Reset 0 0 0 0 0 0 0 0<br />

Figure 12-29. Precision Timer Prescaler Select Register (PTPSR)<br />

<strong>MC9S12VR</strong> <strong>Family</strong> Reference Manual, Rev. 2.8<br />

390 <strong>Freescale</strong> <strong>Semiconductor</strong>

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