Datasheet

Chapter 8 Multi-Purpose Clock Generator (S08MCGV2)
MC9S08DZ128 Series Data Sheet, Rev. 1
Freescale Semiconductor 193
Figure 8-11. Flowchart of PEE to BLPI Mode Transition using an 8 MHz crystal
MCGC1 = $98
CHECK
CLKST = %10 ?
MCGC2 = $3E
MCGC1 = $5C
CHECK
IREFST = 0?
CHECK
CLKST = %01?
CONTINUE
IN BLPI MODE
START
IN PEE MODE
MCGC3 = $18
ENTER
BLPE MODE ?
IN
BLPE MODE ?
(LP=1)
MCGC2 = $36
(LP = 0)
CHECK
PLLST = 0?
OPTIONAL:
= 1?
MCGC2 = $08
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
CHECK LOCK
(LP = 1)