mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1223

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

Freescale Semiconductor
Clock Register
Written
Check
Address, Data,
Access Error and
Protection Violation
Check
Command
Bit Polling for
Command Completion
Check
Buffer Empty Check
Read: FCLKDIV register
Figure 29-28. Example Mass Erase Command Flow
1.
2.
3.
yes
FDIVLD
START
Write: Flash Block Address
Write: FCMD register
Mass Erase Command 0x41
Write: FSTAT register
Clear CBEIF 0x80
and Dummy Data
Set?
Read: FSTAT register
Read: FSTAT register
MC9S12XDP512 Data Sheet, Rev. 2.17
ACCERR/
yes
yes
CBEIF
no
Write: FCLKDIV register
CCIF
Set?
PVIOL
Set?
Set?
EXIT
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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