S912XHZ512F1VAG Datasheet, PDF (364/978 Pages) Freescale Semiconductor, Inc – Covers MC9S12XHZ384, MC9S12XHZ256

Chapter 7 Clocks and Reset Generator (S12CRGV6)
Instruction
FSTWKP=1 SCME=1 STOP
CPU resumes program execution immediately
IRQ Service STOP
Interrupt
IRQ Service STOP
Interrupt
IRQ Service
Interrupt
Oscillator Clock
PLL Clock
Core Clock
Power Saving
Oscillator Disabled
Self-Clock Mode
Figure 7-23. Fast Wake-up from Full Stop Mode: Example 1
.
CPU resumes program execution immediately
Instruction
FSTWKP=1 SCME=1 _STOP
IRQ Service FSTWKP=0 SCMIE=1
Freq. Uncritical
Instructions
Freq. Critical
Instr. Possible
IRQ Interrupt
SCM Interrupt
Oscillator Clock
Oscillator Disabled
OSC Startup
Clock Quality Check
PLL Clock
Core Clock
Self-Clock Mode
Figure 7-24. Fast Wake-up from Full Stop Mode: Example 2
MC9S12XHZ512 Data Sheet, Rev. 1.06
364
Freescale Semiconductor