263
MC96F6432A
ABOV Semiconductor Co., Ltd.
The Byte Write program procedure in user program mode
1.
Page buffer clear (FMCR=0x01)
2.
Write data to page buffer
3.
Set flash sector address register (FSADRH/FSADRM/FSADRL).
4.
Set flash identification register (FIDR).
5.
Check the UserID for to prevent the invalid work
(Note1)
.
6.
Set flash mode control register (FMCR).
7.
Erase verify
NOTE)
1.
Please refer to the chapter “Protection for Invalid Erase/Write”.
2.
Data of the address should be “00H” before writing data to an address.
3. On flash memory erase and write, it should be disabled the RXE bit of USInCR2 register.
Program Tip
–
byte write
ANL
EO,#0xF8
;Set DPTR0
MOV
FMCR,#0x01
;page buffer clear
NOP
;Dummy instruction, This instruction must be needed.
NOP
;Dummy instruction, This instruction must be needed.
NOP
;Dummy instruction, This instruction must be needed.
MOV
A,#5
MOV
DPH,#0x80
MOV
DPL,#0
MOVX
@DPTR,A
;Write data to page buffer
MOV
A,#6
MOV
DPH,#0x80
MOV
DPL,#0x05
MOVX
@DPTR,A
;Write data to page buffer
MOV
FSADRH,#SAH
;Sector Address High Byte.
MOV
FSADRM,#SAM
;Sector Address Middle Byte
MOV
FSADRL,#SAL
;Sector Address Low Byte
MOV
FIDR,#0xA5
;Identification value
MOV
A,#ID_DATA_1 ;Check the UserID(written by user)
CJNE A,UserID1,No_WriteErase;This routine for UserID must be needed.
MOV
A,#ID_DATA_2
CJNE A,UserID2,No_WriteErase
MOV
FMCR,#0x03
;Start flash write mode
NOP
;Dummy instruction, This instruction must be needed.
NOP
;Dummy instruction, This instruction must be needed.
NOP
;Dummy instruction, This instruction must be needed.
LJMP
Write_verify
---
No_WriteErase:
MOV
FIDR,#00H
MOV
UserID1,#00H
MOV
UserID2,#00H
---
Write_verify:
---
Verify_error:
---
Содержание MC96F6332A
Страница 16: ...16 MC96F6432A ABOV Semiconductor Co Ltd 4 Package Diagram Figure 4 1 48 Pin QFN Package ...
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Страница 19: ...19 MC96F6432A ABOV Semiconductor Co Ltd Figure 4 4 32 Pin SOP Package ...
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