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S12 Clock, Reset and Power Management Unit (S12CPMU_UHV_V8)
MC9S12VRP Family Reference Manual Rev. 1.3
108
NXP Semiconductors
4.1.1
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.
•
High temperature interrupt
•
Voltage Regulator providing Full Performance Mode (FPM) and Reduced Performance Mode
(RPM)
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
•
Reference clock either external (crystal) or internal square wave (1MHz IRC1M) based.
•
PLL clock monitor reset
•
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:
•
Frequency trimming
(A factory trim value for 1MHz is loaded from Flash Memory into the IRCTRIM register after
reset, which can be overwritten by application if required)
Summary of Contents for MC9S12VRP64
Page 16: ...MC9S12VRP Family Reference Manual Rev 1 3 16 NXP Semiconductors ...
Page 46: ...Device Overview S12VRP Series MC9S12VRP Family Reference Manual Rev 1 3 46 NXP Semiconductors ...
Page 236: ...S12S Debug Module S12DBGV2 MC9S12VRP Family Reference Manual Rev 1 3 236 NXP Semiconductors ...
Page 244: ...Interrupt Module S12SINTV1 MC9S12VRP Family Reference Manual Rev 1 3 244 NXP Semiconductors ...
Page 358: ...Timer Module TIM16B2CV3 MC9S12VRP Family Reference Manual Rev 1 3 358 NXP Semiconductors ...
Page 436: ...Supply Voltage Sensor BATSV2 MC9S12VRP Family Reference Manual Rev 1 3 436 NXP Semiconductors ...
Page 528: ...NVM Electrical Parameters MC9S12VRP Family Reference Manual Rev 1 3 528 NXP Semiconductors ...
Page 530: ...Package Information MC9S12VRP Family Reference Manual Rev 1 3 530 NXP Semiconductors ...
Page 531: ...Package Information MC9S12VRP Family Reference Manual Rev 1 3 NXP Semiconductors 531 ...
Page 532: ...Package Information MC9S12VRP Family Reference Manual Rev 1 3 532 NXP Semiconductors ...