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SC312XDP512F0MPVR датащи(PDF) 1057 Page - Freescale Semiconductor, Inc

номер детали SC312XDP512F0MPVR
подробное описание детали  HCS12X Microcontrollers
PDF  1348 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

SC312XDP512F0MPVR датащи(HTML) 1057 Page - Freescale Semiconductor, Inc

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Chapter 25 2 Kbyte EEPROM Module (S12XEETX2KV1)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
1059
Figure 25-19. Example Program Command Flow
Write: EEPROM Address
Write: ECMD register
Program Command 0x20
Write: ESTAT register
Clear CBEIF 0x80
1.
2.
3.
Clear ACCERR/PVIOL 0x30
Write: ESTAT register
yes
no
Access Error and
Protection Violation
no
and program Data
Bit Polling for
Buffer Empty
Check
Read: ESTAT register
yes
NOTE: command write sequence
aborted by writing 0x00 to
ESTAT register.
NOTE: command write sequence
aborted by writing 0x00 to
ESTAT register.
Read: ESTAT register
no
START
yes
Check
CBEIF
Set?
Address, Data,
Command
Buffer Empty Check
CBEIF
Set?
ACCERR/
PVIOL
Set?
EXIT
Write: ECLKDIV register
Read: ECLKDIV register
yes
no
Clock Register
Written
Check
EDIVLD
Set?
NOTE: ECLKDIV needs to
be set once after each reset.
no
yes
Sequential
Programming
Decision
Next
Word?
no
Bit Polling for
Command Completion
Check
Read: ESTAT register
yes
CCIF
Set?



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