mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1219

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Sequential
Programming
Decision
Address, Data,
Access Error and
Protection Violation
Check
Bit Polling for
Buffer Empty
Check
Clock Register
Written
Check
Command
Bit Polling for
Command Completion
Check
Buffer Empty Check
Read: FCLKDIV register
1.
2.
3.
Figure 29-26. Example Program Command Flow
yes
FDIVLD
Write: FCMD register
Program Command 0x20
Write: FSTAT register
Clear CBEIF 0x80
Write: Flash Address
START
and program Data
Set?
Read: FSTAT register
Read: FSTAT register
Read: FSTAT register
MC9S12XDP512 Data Sheet, Rev. 2.17
ACCERR/
yes
yes
CBEIF
no
CBEIF
yes
no
Word?
Write: FCLKDIV register
CCIF
Set?
Set?
Next
PVIOL
Set?
Set?
EXIT
no
yes
no
yes
no
no
Clear ACCERR/PVIOL 0x30
Write: FSTAT register
Chapter 29 128 Kbyte Flash Module (S12XFTX128K1V1)
NOTE: FCLKDIV needs to
be set once after each reset.
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