Chapter 7 S12 Clock, Reset and Power Management Unit (S12CPMU_UHV_V5)
S12ZVHY/S12ZVHL Family Reference Manual, Rev. 1.05
230
Freescale
Semiconductor
7.1.1
Features
The Pierce Oscillator (XOSCLCP) contains circuitry to dynamically control current gain in the output
amplitude. This ensures a signal with low harmonic distortion, low power and good noise immunity.
•
Supports crystals or resonators from 4MHz to 20MHz.
•
High noise immunity due to input hysteresis and spike filtering.
•
Low RF emissions with peak-to-peak swing limited dynamically
•
Transconductance (gm) sized for optimum start-up margin for typical crystals
•
Dynamic gain control eliminates the need for external current limiting resistor
•
Integrated resistor eliminates the need for external bias resistor
•
Low power consumption: Operates from internal 1.8V (nominal) supply, Amplitude control limits
power
•
Optional oscillator clock monitor reset
•
Optional full swing mode for higher immunity against noise injection on the cost of higher power
consumption and increased emission
The Voltage Regulator (VREGAUTO) has the following features:
•
Input voltage range from 6 to 18V (nominal operating range)
•
Low-voltage detect (LVD) with low-voltage interrupt (LVI)
•
Power-on reset (POR)
•
Low-voltage reset (LVR)
•
On Chip Temperature Sensor and Bandgap Voltage measurement via internal ADC channel.
•
Voltage Regulator providing Full Performance Mode (FPM) and Reduced Performance Mode
(RPM)
•
External ballast device support to reduce internal power dissipation
•
Capable of supplying both the MCU internally plus external components
•
Over-temperature interrupt
The Phase Locked Loop (PLL) has the following features:
•
Highly accurate and phase locked frequency multiplier
•
Configurable internal filter for best stability and lock time
•
Frequency modulation for defined jitter and reduced emission
•
Automatic frequency lock detector
•
Interrupt request on entry or exit from locked condition
•
PLL clock monitor reset
•
Reference clock either external (crystal) or internal square wave (1MHz IRC1M) based.
•
PLL stability is sufficient for LIN communication in slave mode, even if using IRC1M as reference
clock
The Internal Reference Clock (IRC1M) has the following features:
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...
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