MC9S08DZ128 Datasheet, PDF (193/458 Pages) Freescale Semiconductor, Inc – Microcontrollers

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