![Freescale Semiconductor MC9S12ZVM series Скачать руководство пользователя страница 244](http://html1.mh-extra.com/html/freescale-semiconductor/mc9s12zvm-series/mc9s12zvm-series_reference-manual_2330602244.webp)
Chapter 8 S12 Clock, Reset and Power Management Unit (S12CPMU_UHV_V6)
MC9S12ZVM Family Reference Manual Rev. 1.3
244
Freescale Semiconductor
8.1.1
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 MC9S12ZVM series
Страница 116: ...Chapter 2 Port Integration Module S12ZVMPIMV1 MC9S12ZVM Family Reference Manual Rev 1 3 116 Freescale Semiconductor ...
Страница 242: ...Chapter 7 ECC Generation Module SRAM_ECCV1 MC9S12ZVM Family Reference Manual Rev 1 3 242 Freescale Semiconductor ...
Страница 384: ...Chapter 10 Supply Voltage Sensor BATSV3 MC9S12ZVM Family Reference Manual Rev 1 3 384 Freescale Semiconductor ...
Страница 484: ...Chapter 13 Programmable Trigger Unit PTUV2 MC9S12ZVM Family Reference Manual Rev 1 3 484 Freescale Semiconductor ...
Страница 662: ...Chapter 17 Gate Drive Unit GDUV4 MC9S12ZVM Family Reference Manual Rev 1 3 662 Freescale Semiconductor ...
Страница 684: ...Chapter 18 LIN Physical Layer S12LINPHYV2 MC9S12ZVM Family Reference Manual Rev 1 3 684 Freescale Semiconductor ...
Страница 740: ...Chapter 19 128 KB Flash Module S12ZFTMRZ128K512V2 MC9S12ZVM Family Reference Manual Rev 1 3 740 Freescale Semiconductor ...
Страница 756: ...Appendix A MCU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 756 Freescale Semiconductor ...
Страница 772: ...Appendix D LINPHY Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 772 Freescale Semiconductor ...
Страница 776: ...Appendix E GDU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 776 Freescale Semiconductor ...
Страница 788: ...Appendix I MSCAN Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 788 Freescale Semiconductor ...
Страница 790: ...Appendix J Package Information MC9S12ZVM Family Reference Manual Rev 1 3 790 Freescale Semiconductor ...