MC9S12Q FREESCALE [Freescale Semiconductor, Inc], MC9S12Q Datasheet - Page 488
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MC9S12Q
Manufacturer Part Number
MC9S12Q
Description
Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12Q.pdf
(644 pages)
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Chapter 17 32 Kbyte Flash Module (S12FTS32KV1)
488
Sequential
Programming
Decision
Clock Register
Written
Check
Address, Data,
Command
Access Error and
Protection Violation
Check
Bit Polling for
Buffer Empty
Check
Bit Polling for
Command Completion
Check
Buffer Empty Check
Read: FCLKDIV register
1.
2.
3.
Figure 17-23. Example Program Command Flow
yes
FDIVLD
Write: Flash Address
Write: FCMD register
Program Command 0x20
Write: FSTAT register
Clear CBEIF 0x80
START
and program Data
Set?
Read: FSTAT register
Read: FSTAT register
Read: FSTAT register
ACCERR/
yes
yes
CBEIF
no
CBEIF
yes
no
Word?
CCIF
Write: FCLKDIV register
Set?
Set?
Next
Set?
EXIT
PVIOL
Set?
no
MC9S12Q128
Rev 1.09
no
yes
yes
no
no
Clear ACCERR/PVIOL 0x30
Write: FSTAT register
NOTE: FCLKDIV needs to
be set once after each reset.
Freescale Semiconductor
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