MC9S12Q FREESCALE [Freescale Semiconductor, Inc], MC9S12Q Datasheet - Page 492
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)
492
Clock Register
Written
Check
Address, Data,
Access Error and
Protection Violation
Check
Command
Buffer Empty Check
Bit Polling for
Command Completion
Check
Read: FCLKDIV register
Figure 17-25. Example Mass Erase Command Flow
1.
2.
3.
yes
FDIVLD
Write: Flash Block Address
Write: FCMD register
Mass Erase Command 0x41
Write: FSTAT register
Clear CBEIF 0x80
START
and Dummy Data
Set?
Read: FSTAT register
Read: FSTAT register
ACCERR/
yes
yes
CBEIF
no
Write: FCLKDIV register
CCIF
Set?
PVIOL
Set?
Set?
EXIT
no
MC9S12Q128
Rev 1.09
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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