mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 114

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Clock Generator Module (CGM)
Data Sheet
114
OSCCLK[1:0]
OSCSEL[1:0]
SIMOSCEN
From SIM
OSC2
OSC1
CGMVDV
CGMRDV
RDS[3:0]
DETECTOR
DETECTOR
PHASE
R
LOCK
LOCK
REFERENCE
FREQUENCY
INTERNAL OSCILLATOR
See
CRYSTAL OSCILLATOR
OSCILLATOR (OSC) MODULE
MUL[11:0]
DIVIDER
DIVIDER
RC OSCILLATOR
Section 7. Oscillator
PHASE-LOCKED LOOP (PLL)
N
V
DDA
AUTO
Figure 8-1. CGM Block Diagram
AUTOMATIC
CGMRCLK
CGMXFC
CONTROL
FILTER
MODE
LOOP
Clock Generator Module (CGM)
(OSC).
MUX
ACQ
PLL ANALOG
V
FREQUENCY
SSA
ICLK
OSCCLK
CGMXCLK
CGMRCLK
PRE[1:0]
DIVIDER
VRS[7:0]
PLLIE
CONTROLLED
2
OSCILLATOR
INTERRUPT
P
BCS
CONTROL
VOLTAGE
L
VPR[1:0]
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
PLLF
2
E
CIRCUIT
SELECT
CLOCK
CGMPCLK
*WHEN S = 1,
CGMOUT = B
÷
2
To SIM (and COP)
To Timebase Module (TBM)
T0 ADC, Analog Module
Freescale Semiconductor
A
B
1
S*
To PWM,
Analog Module
CGMVCLK
CGMOUT
To SIM
SIMDIV2
From SIM
CGMINT
To SIM