Freescale Semiconductor DEMO9S08DZ60 Demo Board DEMO9S08DZ60 DEMO9S08DZ60 数据表

产品代码

DEMO9S08DZ60

Chapter 8 Multi-Purpose Clock Generator (S08MCGV1)

MC9S08DZ60 Series Data Sheet, Rev. 4

158

Freescale Semiconductor

4. Lastly, FBI transitions into BLPI mode.

a) MCGC2 = 0x08 (%00001000)

– LP (bit 3) in MCGSC is 1

Figure 8-10. Flowchart of PEE to BLPI Mode Transition using a 4 MHz crystal

MCGC1 = $90

CHECK

CLKST = %10 ?

MCGC2 = $3E

MCGC1 = $44

CHECK

IREFST = 0?

CHECK

CLKST = %01?

CONTINUE

IN BLPI MODE

START

IN PEE MODE

MCGC1 = $B8
MCGC3 = $04

ENTER

BLPE MODE ?

(LP=1)

MCGC2 = $36

(LP = 0)

CHECK

PLLST = 0?

OPTIONAL:

= 1?

MCGC2 = $08

YES

CHECK LOCK