S912XEG384J3VA Datasheet, PDF (494/1324 Pages) Freescale Semiconductor, Inc – MC9S12XEP100 Reference Manual Covers MC9S12XE Family

Chapter 11 S12XE Clocks and Reset Generator (S12XECRGV1)
Instruction
FSTWKP=1 SCME=1
CPU resumes program execution immediately
STOP
IRQ service
Interrupt
STOP
IRQ service
Interrupt
STOP IRQ service
Interrupt
Oscillator Clock
Power Saving
Oscillator Disabled
PLL Clock
Core Clock
Self-Clock Mode
Figure 11-19. Fast Wake-up from Full Stop Mode: Example 1
.
CPU resumes program execution immediately ^{Frequent Uncritical Frequent Critical}
Instructions Instructions Possible
Instruction
IRQ Service
STOP
FSTWKP=1 SCME=1
IRQ Interrupt ^{FSTWKP=0 SCMIE=1}
SCM Interrupt
Oscillator Clock
Clock Quality Check
Oscillator Disabled Osc Startup
PLL Clock
Core Clock
Self-Clock Mode
Figure 11-20. Fast Wake-up from Full Stop Mode: Example 2
11.5 Resets
All reset sources are listed in Table 11-16. Refer to MCU specification for related vector addresses and
priorities.
Table 11-16. Reset Summary
Reset Source
Power on Reset
Low Voltage Reset
External Reset
Illegal Address Reset
Clock Monitor Reset
Local Enable
None
None
None
None
PLLCTL (CME=1, SCME=0)
MC9S12XE-Family Reference Manual Rev. 1.25
494
Freescale Semiconductor