mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1216

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

Chapter 29 128 Kbyte Flash Module (S12XFTX128K1V1)
1216
Clock Register
Written
Check
Address, Data,
Access Error and
Protection Violation
Check
Bit Polling for
Command Completion
Check
Command
Buffer Empty Check
Read: FCLKDIV register
Figure 29-24. Example Data Compress Command Flow
2.
3.
1.
Data Compress Signature
yes
Read: FDATA registers
FDIVLD
Write: FCMD register
Data Compress Command 0x06
Write: FSTAT register
Clear CBEIF 0x80
Write: Flash Address to start
compression and number of word
addresses to compress
START
Set?
Read: FSTAT register
Read: FSTAT register
MC9S12XDP512 Data Sheet, Rev. 2.17
ACCERR/
Signature
yes
yes
CBEIF
no
yes
CCIF
Write: FCLKDIV register
Set?
Set?
PVIOL
Set?
EXIT
Valid?
no
yes
no
no
no
Clear ACCERR/PVIOL 0x30
Write: FSTAT register
Flash Sector(s) Compressed
NOTE: FCLKDIV needs to
be set once after each reset.
Erase and Reprogram
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