Datasheet

Chapter 8 Multi-Purpose Clock Generator (S08MCGV2)
MC9S08DZ128 Series Data Sheet, Rev. 1
190 Freescale Semiconductor
Figure 8-10. Flowchart of FEI to PEE Mode Transition using an 8 MHz crystal
MCGC2 = $36
CHECK
OSCINIT = 1 ?
CHECK
IREFST = 0?
CHECK
CLKST = %10?
ENTER
BLPE MODE ?
MCGC2 = $3E
(LP = 1)
MCGC3 = $58
IN
BLPE MODE ?
(LP=1)
MCGC2 = $36
(LP = 0)
CHECK
PLLST = 1?
MCGC1 = $18
CHECK
LOCK = 1?
CHECK
CLKST = %11?
CONTINUE
IN PEE MODE
START
IN FEI MODE
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
MCGC1 = $98
MCGC3 = $11
(DIV32 = 1)