mc9s08gt32a Freescale Semiconductor, Inc, mc9s08gt32a Datasheet - Page 118

• Manufacturer Part Number: mc9s08gt32a
• Description: Hcs08 Microcontrollers 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

Internal Clock Generator (S08ICGV2)
ICGC2 = $30 (%00110000)
ICGS1 = $xx
ICGS2 = $xx
ICGFLTLU/L = $xx
Not used in this example
ICGTRM
118
Bit 7
Bit 6:4 MFD
Bit 3
Bit 2:0 RFD
This is read only except for clearing interrupt flag
This is read only. Should read DCOS before performing any time critical tasks
Not used in this example
LOLRE
LOCRE
Figure 7-9. ICG Initialization and Stop Recovery for Example #2
0
011 Sets the MFD multiplication factor to 10
0
000 Sets the RFD division factor to ÷1
RESET, STOP1, STOP2
FLL LOCK STATUS
RECOVERY FROM
INITIALIZE ICG
Generates an interrupt request on loss of lock
Generates an interrupt request on loss of clock
ICG1 = $7A
ICG2 = $30
CONTINUE
LOCK = 1?
CHECK
MC9S08GB60A Data Sheet, Rev. 1.02
YES
NO
SOURCE (f
SERVICE INTERRUPT
FLL LOCK STATUS
FROM STOP3
RECOVERY
CONTINUE
LOCK = 1?
CHECK
Bus
YES
= 4 MHz)
NO
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