mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1092
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mc9s12xd256
Manufacturer Part Number
mc9s12xd256
Description
Hcs12x Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12XD256.pdf
(1350 pages)
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Chapter 26 4 Kbyte EEPROM Module (S12XEETX4KV2)
1092
Clock Register
Written
Check
Erase Verify
Bit Polling for
Command Completion
Check
Status
Address, Data,
Access Error and
Protection Violation
Check
Command
Buffer Empty Check
Read: ECLKDIV register
2.
3.
1.
Figure 26-18. Example Erase Verify Command Flow
yes
Write: ECMD register
Erase Verify Command 0x05
Write: ESTAT register
Clear CBEIF 0x80
START
EDIVLD
Write: EEPROM Address
and Dummy Data
Set?
Read: ESTAT register
Read: ESTAT register
MC9S12XDP512 Data Sheet, Rev. 2.17
yes
ACCERR/
yes
yes
no
BLANK
CBEIF
Write: ECLKDIV register
CCIF
Set?
EXIT EEPROM Memory
Set?
Set?
PVIOL
Set?
no
Erased
yes
no
no
no
Clear ACCERR/PVIOL 0x30
Write: ESTAT register
NOTE: ECLKDIV needs to
be set once after each reset.
NOTE: command write sequence
aborted by writing 0x00 to
ESTAT register.
NOTE: command write sequence
aborted by writing 0x00 to
ESTAT register.
EXIT
EEPROM Memory
Not Erased
Freescale Semiconductor
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