mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 103

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

7.3 Clock Selection
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Reference clocks are selectable for the following sub-systems:
OSCSEL1
OSCSEL0
•
•
MOR
CGMXCLK and CGMRCLK — Reference clock for clock
generator module (CGM) and other MCU sub-systems other than
TBM and COP. This is the main reference clock for the MCU.
OSCCLK — Reference clock for timebase module (TBM).
X-TAL OSCILLATOR
Figure 7-1. Oscillator Module Block Diagram
OSC1
To CGM and others
X
XCLK
Oscillator (OSC)
MUX
OSC2
CGMXCLK
RC
I
To CGM PLL
RC OSCILLATOR
CGMRCLK
RCCLK
BUS CLOCK
X
To TBM
INTERNAL OSCILLATOR
MUX
OSCCLK
RC
From SIM
Oscillator (OSC)
ICLK
Clock Selection
I
Data Sheet
To SIM
(and COP)
OSCCLK1
OSCCLK0
CONFIG2
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