mc9s12xf512 Freescale Semiconductor, Inc, mc9s12xf512 Datasheet - Page 164

• Manufacturer Part Number: mc9s12xf512
• Description: S12x Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 4 384 KByte Flash Module (S12XFTM384K2V1)
164
Clock Register
Written
Check
FCCOB
Availability Check
Access Error and
Protection Violation
Check
Bit Polling for
Command Completion
Check
Figure 4-26. Generic Flash Command Write Sequence Flowchart
Read: FCLKDIV register
Write: FSTAT register (to launch command)
Clear CCIF 0x80
MC9S12XF - Family Reference Manual, Rev.1.19
Write to FCCOBIX register
to identify specific command
parameter to load.
Write to FCCOB register
to load required command parameter.
yes
START
FDIVLD
Set?
Read: FSTAT register
Read: FSTAT register
yes
Parameters?
ACCERR/
no
no
CCIF Set?
yes
Write: FCLKDIV register
Set?
CCIF
FPVIOL
Set?
More
EXIT
no
yes
no
yes
no
Results from previous Command
Clear ACCERR/FPVIOL 0x30
Write: FSTAT register
Note: FCLKDIV must be set after
each reset
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