mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 189
mc9s12e256
Manufacturer Part Number
mc9s12e256
Description
Hcs12 Microcontrollers 16-bit Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12E256.pdf
(602 pages)
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Freescale Semiconductor
Clear PLLSEL,
Disable PLL
Wait Mode.
Core req’s
PLLWAI=1
?
yes
no
core clocks
SYSWAI=1
CWAI or
Disable
?
yes
Figure 4-23. Wait Mode Entry/Exit Sequence
no
system clocks
SYSWAI=1
Disable
MC9S12E256 Data Sheet, Rev. 1.08
?
yes
due to external
Wait Mode left
reset
no
(Wakeup from Wait)
SCM Interrupt
Exit Wait w.
Exit Wait w.
Generate
CMRESET
ext.RESET
Wait Mode
Enter
no
Chapter 4 Clocks and Reset Generator (CRGV4)
Continue w.
SCMIE=1
Wait Mode
normal OP
SCME=1
CME=1
CM fail
Enter
SCM
Exit
?
?
?
?
yes
yes
yes
yes
no
no
no
Wait Mode
SCM=1
Enter
SCM
Exit
INT
?
?
no
yes
yes
no
189
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