mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1065

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

Freescale Semiconductor
Bit Polling for
Command
Completion Check
NOTE: command write sequence
aborted by writing 0x00 to
ESTAT register.
NOTE: command write sequence
aborted by writing 0x00 to
ESTAT register.
Execute Sector Erase/Modify Command Flow
Sector Erase
Completed
Figure 25-22. Example Sector Erase Abort Command Flow
Read: ESTAT register
yes
CCIF
Set?
EXIT
Bit Polling for
Command
Completion Check
Access
Error Check
MC9S12XDP512 Data Sheet, Rev. 2.17
1.
2.
3.
Sector Erase
or Modify
Completed
no
Write: Dummy EEPROM Address
and Dummy Data
Write: ECMD register
Sector Erase Abort Cmd 0x47
Write: ESTAT register
Clear CBEIF 0x80
Read: ESTAT register
Needed?
yes
yes
ACCERR
no
Erase
Abort
Set?
CCIF
Set?
EXIT
Chapter 25 2 Kbyte EEPROM Module (S12XEETX2KV1)
no
yes
no
Sector Erase
or Modify
Aborted
Clear ACCERR 0x10
Write: ESTAT register
EXIT
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