Chapter 7 S12 Clock, Reset and Power Management Unit (S12CPMU_UHV_V5)
S12ZVHY/S12ZVHL Family Reference Manual, Rev. 1.05
288
Freescale
Semiconductor
7.5.4
PLL Clock Monitor Reset
In case of loss of PLL clock oscillation or the PLL clock frequency is below the failure assert frequency
f
PMFA
(see device electrical characteristics for values), the S12CPMU_UHV_V5 generates a PLL Clock
Monitor Reset. In Full Stop Mode the PLL and the PLL clock monitor are disabled.
7.5.5
Computer Operating Properly Watchdog (COP) Reset
The COP (free running watchdog timer) enables the user to check that a program is running and
sequencing properly. When the COP is being used, software is responsible for keeping the COP from
timing out. If the COP times out it is an indication that the software is no longer being executed in the
intended sequence; thus COP reset is generated.
The clock source for the COP is either ACLK, IRCCLK or OSCCLK depending on the setting of the
COPOSCSEL0 and COPOSCSEL1 bit.
Depending on the COP configuration there might be a significant latency time until COP is active again
after exit from Stop Mode due to clock domain crossing synchronization. This latency time occurs if COP
clock source is ACLK and the CSAD bit is set (please refer to CSAD bit description for details)
gives an overview of the COP condition (run, static) in Stop Mode depending on legal
configuration and status bit settings:
Table 7-35. COP condition (run, static) in Stop Mode
COPOSCSEL1 CSAD PSTP
PCE
COPOSCSEL0
OSCE
UPOSC
COP counter behavior in Stop Mode
(clock source)
1
0
x
x
x
x
x
Run (ACLK)
1
1
x
x
x
x
x
Static (ACLK)
0
x
1
1
1
1
1
Run (OSCCLK)
0
x
1
1
0
0
x
Static (IRCCLK)
0
x
1
1
0
1
x
Static (IRCCLK)
0
x
1
0
0
x
x
Static (IRCCLK)
0
x
1
0
1
1
1
Static (OSCCLK)
0
x
0
1
1
1
1
Static (OSCCLK)
0
x
0
1
0
1
x
Static (IRCCLK)
0
x
0
1
0
0
0
Static (IRCCLK)
0
x
0
0
1
1
1
Satic (OSCCLK)
0
x
0
0
0
1
1
Static (IRCCLK)
0
x
0
0
0
1
0
Static (IRCCLK)
0
x
0
0
0
0
0
Static (IRCCLK)
Содержание MC9S12ZVHL32
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Страница 686: ...Chapter 20 ECC Generation module SRAM_ECCV1 S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 686 Freescale Semiconductor...
Страница 752: ...Chapter 22 Supply Voltage Sensor BATSV2 S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 752 Freescale Semiconductor...
Страница 774: ...Chapter 23 LIN Physical Layer S12LINPHYV2 S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 774 Freescale Semiconductor...
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...
Страница 806: ...Appendix G NVM Electrical Parameters S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 806 Freescale Semiconductor...
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...
Страница 829: ...Appendix O Package Information S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 830 Freescale Semiconductor O 1 144 LQFP...
Страница 830: ...Appendix O Package Information S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 Freescale Semiconductor 831...
Страница 831: ...Appendix O Package Information S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 832 Freescale Semiconductor...
Страница 832: ...Appendix O Package Information S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 Freescale Semiconductor 833 O 2 100 LQFP...
Страница 833: ...Appendix O Package Information S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 834 Freescale Semiconductor...
Страница 834: ...Appendix O Package Information S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 Freescale Semiconductor 835...
Страница 835: ...Appendix O Package Information S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 836 Freescale Semiconductor...