Datasheet

Read: FCLKDIV
START
FDIV
Read: FSTAT
Read: FSTAT
CCIF
Write: FCLKDIV
register
NOTE: FCLKDIV must be
set after each reset
Set?
CCIF
ACCERR
Results from previous Command
Write to FCCOBIX register
to identify specific command
parameter to load
Write to FCCOB register
to load required command
parameter
More
Write: FSTAT register
(to launch command)
Read: FSTAT register
CCIF Set?
Bit Polling for
Command Completion Check
Clear CCIF 0x80
Parameters?
Write: FSTAT register
Clear ACCERR
FPVIOL 0x30
or FPVIOL Set?
Access Error and
Protection Violation Check
Set?
No
No
No
Yes
Yes
Yes
No
Yes
END
register
No
No
Yes
Yes
Clock Divider
Value Check
FCCOB
Availability Check
register
Correct?
register
Figure 4-3. Generic flash and EEPROM command write sequence flowchart
Flash and EEPROM
MC9S08PA60 Reference Manual, Rev. 1, 9/2012
78 Freescale Semiconductor, Inc.