English
Language : 

S9S12XS256J0CAL Datasheet, PDF (262/738 Pages) Freescale Semiconductor, Inc – Microcontrollers
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 8-19. 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 8-20. Fast Wake-up from Full Stop Mode: Example 2
8.5 Resets
All reset sources are listed in Table 8-16. Refer to MCU specification for related vector addresses and
priorities.
Table 8-16. 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)
S12XS Family Reference Manual, Rev. 1.13
262
Freescale Semiconductor