MC9S12VRP Family Reference Manual Rev. 1.3
NXP Semiconductors
107
Chapter 4
S12 Clock, Reset and Power Management Unit
(S12CPMU_UHV_V8)
Table 4-1.
Revision History
4.1
Introduction
This specification describes the function of the Clock, Reset and Power Management Unit
(S12CPMU_UHV_V8).
•
The Pierce oscillator (XOSCLCP) provides a robust, low-noise and low-power external clock
source. It is designed for optimal start-up margin with typical crystal oscillators.
•
The Voltage regulator (VREGAUTO) operates from the range 6V to 18V. It provides all the
required chip internal voltages and voltage monitors.
•
The Phase Locked Loop (PLL) provides a highly accurate frequency multiplier with internal filter.
•
The Internal Reference Clock (IRC1M) provides a 1MHz internal clock.
Rev. No.
(Item No)
Date
(Submitted By)
Sections Affected
Substantial Change(s)
V08.00
27. Jan. 14
• Added full swing pierce oscillator (OSCMOD bit in CPMUOSC2
register). Added drawing in Block Diagram.
• Added oscillator clock monitor reset to be configured with
OMRE bit (CPMUOSC2 register). Added drawing in Block
Diagram.
• Added PLL clock monitor reset and PMRF flag in CPMUINT
register. Added drawing in Block Diagram.
V08.01
30. Jan. 14
• changed all “ATD” references to “ADC”
• Added statement to clarify RTI and COP in freeze mode
V08.02
26. March 14
•
V08.03
21 Oct. 2014
• Improved Figure: Start up of clock system after Reset
• Improved Figure: Full stop mode using Oscillator
• Improved Figure: Enabling the external oscillator
• Improved Table: Trimming effect of ACLKTR
• Improved Table: Trimming effect of HTTR
• Register Description for CPMUHTCTL: Added note on how to
compute V
HT
• Functional Description PBE Mode: Added Note that the clock
system might stall if osc monitor reset disabled (OMRE=0)
•
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 ...