mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 111

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Clock Register
Written
Check
Protection
Violation Check
Access
Error Check
Address, Data,
Command
Bit Polling for
Command
Buffer Empty Check
Completion Check
Read: Register ECLKDIV
1.
2.
3.
Bit EDIVLD set?
yes
Write: Array Address and
Program Data
Write: Register ECMD
Program Command 0x20
Write: Register ESTAT
Clear bit CBEIF 0x80
Figure 3-18. Example Program Command Flow
Read: Register ESTAT
ACCERR
no
no
CBEIF
no
PVIOL
yes
CCIF
MC9S12HZ256 Data Sheet, Rev. 2.05
Set?
EXIT
Set?
Write: Register ECLKDIV
Set?
Set?
Bit
Bit
Bit
Bit
no
yes
yes
yes
no
Clear bit PVIOL 0x20
Write: Register ESTAT
Clear bit ACCERR 0x10
Write: Register ESTAT
NOTE: command sequence
aborted by writing 0x00 to
ESTAT register.
NOTE: command sequence
aborted by writing 0x00 to
ESTAT register.
Read: Register ESTAT
Chapter 3 2 Kbyte EEPROM Module (EETS2KV1)
Next Write?
yes
no
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