Chapter 7 S12 Clock, Reset and Power Management Unit (S12CPMU_UHV_V5)
S12ZVHY/S12ZVHL Family Reference Manual, Rev. 1.05
252
Freescale
Semiconductor
7.3.2.9
S12CPMU_UHV_V5 RTI Control Register (CPMURTI)
This register selects the time-out period for the Real Time Interrupt.
The clock source for the RTI is either IRCCLK or OSCCLK depending on the setting of the RTIOSCSEL
bit. In Stop Mode with PSTP=1 (Pseudo Stop Mode) and RTIOSCSEL=1 the RTI continues to run, else
the RTI counter halts in Stop Mode.
Read: Anytime
Write: Anytime
NOTE
A write to this register starts the RTI time-out period. A change of the
RTIOSCSEL bit (writing a different value or loosing UPOSC status)
re-starts the RTI time-out period.
Module Base + 0x000B
7
6
5
4
3
2
1
0
R
RTDEC
RTR6
RTR5
RTR4
RTR3
RTR2
RTR1
RTR0
W
Reset
0
0
0
0
0
0
0
0
Figure 7-12. S12CPMU_UHV_V5 RTI Control Register (CPMURTI)
Table 7-11. CPMURTI Field Descriptions
Field
Description
7
RTDEC
Decimal or Binary Divider Select Bit
— RTDEC selects decimal or binary based prescaler values.
0 Binary based divider value. See
1 Decimal based divider value. See
6–4
RTR[6:4]
Real Time Interrupt Prescale Rate Select Bits
— These bits select the prescale rate for the RTI.See
.
3–0
RTR[3:0]
Real Time Interrupt Modulus Counter Select Bits
— These bits select the modulus counter target value to
provide additional granularity.
and
show all possible divide values selectable by the
CPMURTI register
.
Содержание MC9S12ZVHL32
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Страница 788: ...Appendix A MCU Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 788 Freescale Semiconductor...
Страница 794: ...Appendix B ADC Electricals S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 794 Freescale Semiconductor...
Страница 798: ...Appendix D IRC Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 798 Freescale Semiconductor...
Страница 802: ...Appendix F MSCAN Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 802 Freescale Semiconductor...
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Страница 810: ...Appendix H BATS Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 810 Freescale Semiconductor...
Страница 816: ...Appendix K OSC32K Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 816 Freescale Semiconductor...
Страница 822: ...Appendix L SPI Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 822 Freescale Semiconductor...
Страница 826: ...Appendix M LINPHY Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 826 Freescale Semiconductor...
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