MC9S12NE64V1 Datasheet, PDF (169/554 Pages) Freescale Semiconductor, Inc – MC9S12NE64V1 Data Sheet

Exit Stop w.
ext.RESET
Wait Mode left
due to external
Core req’s
Stop Mode.
Clear
PLLSEL,
Disable PLL
Enter
Stop Mode
no
no
Exit Stop w. no
CMRESET
SCME=1
?
yes
Exit
Stop Mode
INT
no
?
yes
PSTP=1 ^yes
?
CME=1 ^no
?
yes
Clock
OK
?
yes
Exit Stop w. no
CMRESET
CM fail no
?
yes
SCME=1
?
yes
Exit
Stop Mode
Generate
SCM Interrupt
(Wakeup from Stop)
SCMIE=1 ^no
?
yes
Exit
Stop Mode
Enter
Enter
SCM
SCM
Functional Description
no
INT
?
yes
Exit
Stop Mode
SCM=1 no
?
yes
Enter
SCM
Continue w.
normal OP
Figure 4-24. Stop Mode Entry/Exit Sequence
4.4.10.1 Wake-Up from Pseudo-Stop (PSTP=1)
Wake-up from pseudo-stop is the same as wake-up from wait mode. There are also three different scenarios
for the CRG to restart the MCU from pseudo-stop mode:
• External reset
• Clock monitor fail
• Wake-up interrupt
MC9S12NE64 Data Sheet, Rev. 1.1
Freescale Semiconductor
169