mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 123

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

4.1.3
Freescale Semiconductor
EXTAL
XTAL
VSUP
vsup
monitor
VDDA
VSSA
VDDX
VSSX
VSS
RESET
UPOSC
4MHz-16MHz
Controlled
Oscillator
(XOSCLCP)
PSTP
Clock
Monitor
Pierce
Loop
S12CPMU_UHV Block Diagram
divide
by 2
ACLK
IRCCLK
OSCCLK
ADC
OSCE
COPOSCSEL0
UPOSC=0 clears
CSAD
OSCCLK_LCP
REFDIV[3:0]
Voltage
Regulator
6V to 18V
(VREGAUTO)
COPOSCSEL1
Reference
Lock
detect
LOCK
Divider
COPCLK
Figure 4-1. Block diagram of S12CPMU_UHV
REFCLK
FBCLK
MC9S12VR Family Reference Manual, Rev. 2.2
Preliminary - Subject to Change Without Notice
IRCTRIM[9:0]
Reference
Internal
VDD, VDDF
(IRC1M)
Low Voltage Detect VDDX
Low Voltage Detect VDDA
Power-On Detect
Clock
PCE
COP
Watchdog
Divide by
2*(SYNDIV+1)
SYNDIV[5:0]
REFFRQ[1:0]
VCOFRQ[1:0]
(core supplies)
Phase
locked
Loop with
internal
Filter (PLL)
CPMUCOP
monitor fail
Generator
COP time-out
to Reset
UPOSC
PORF
LVRF
VCOCLK
POSTDIV[4:0]
OSCCLK
IRCCLK
UPOSC=0 sets PLLSEL bit
divide
by 2
Post
Divider
1,2,.32
RC
Osc.
divide
by 4
Generator
RTIOSCSEL
ACLK
Bus Clock
Reset
Clock, Reset and Power Management (S12CPMU_UHV)
Illegal Address Access
COP time-out
OSCCLK
RTICLK
APICLK
LVDS
ILAF
PLLCLK
HTDS
High
Temperature
Sense
LOCKIE
PRE
S12CPMU_UHV
Real Time
Interrupt (RTI)
Autonomous
Periodic
Interrupt (API)
LVIE
PLLSEL
divide
by 8
Oscillator status Interrupt
APIE
RTIE
CPMURTI
HTIE
Power-On Reset
Low Voltage Interrupt
PLL Lock Interrupt
divide
by 2
OSCIE
System Reset
(Core Clock)
BDM Clock
API Interrupt
RTI Interrupt
MMC
HT Interrupt
ECLK2X
API_EXTCLK
(Bus Clock)
ECLK
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