MC9S12XDP512CFU
Model | MC9S12XDP512CFU |
Description | 16-BIT, FLASH, 40MHz, MICROCONTROLLER, PQFP80 |
PDF file | Total 1348 pages (File size: 8M) |
Chip Manufacturer | PHILIPS |
Chapter 2 Clocks and Reset Generator (S12CRGV6)
Core req’s
Stop Mode.
Clear PLLSEL,
Disable PLL
Stop Mode left
due to external reset
Exit Stop w.
ext.RESET
Enter
Stop Mode
No
INT
?
Yes
No
PSTP=1
?
Yes
CME=1
?
Yes
No
No
INT
?
Yes
SCME=1 &
FSTWKP=1
?
No
Yes
CM fail
?
Yes
No
No
Clock
OK
?
Yes
Exit
Stop Mode
Exit Stop w.
CMRESET
no
SCME=1
?
Yes
Exit
Stop Mode
Exit Stop w.
CMRESET
No
SCME=1
?
Yes
SCMIE=1
?
Yes
Exit
Stop Mode
No
Exit
Stop Mode
Exit
Stop Mode
Generate
SCM Interrupt
(Wakeup from Stop)
No
SCM=1
?
Yes
Enter
SCM
Enter SCM
SCMIF not
set!
Enter
SCM
Enter
SCM
Continue w.
normal OP
Figure 2-22. Stop Mode Entry/Exit Sequence
MC9S12XDP512 Data Sheet, Rev. 2.21
108
Freescale Semiconductor