261
MC96F6432A
ABOV Semiconductor Co., Ltd.
15.1.8 Erase Mode
The sector erase program procedure in user program mode
1.
Page buffer clear (FMCR=0x01)
2.
Write
‘0’ 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
(Note)
.
6.
Set flash mode control register (FMCR).
7.
Erase verify
NOTE)
1. Pleas
e refer to the chapter “Protection for Invalid Erase/Write”
2. On flash memory erase and write, it should be disabled the RXE bit of USInCR2 register.
Program Tip
–
sector erase
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,#0
MOV
R0,#SectorSize
;Sector size of Device
MOV
DPH,#0x80
;Page Buffer Address is 8000H
MOV
DPL,#0
Pgbuf_clr:
MOVX
@DPTR,A
INC
DPTR
DJNZ
R0,Pgbuf_clr
;Write ‘0’ to all 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,#0x02
;Start flash erase 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
Erase_verify
---
No_WriteErase:
MOV
FIDR,#00H
MOV
UserID1,#00H
MOV
UserID2,#00H
---
Erase_verify:
---
Verify_error:
---
Содержание MC96F6332A
Страница 16: ...16 MC96F6432A ABOV Semiconductor Co Ltd 4 Package Diagram Figure 4 1 48 Pin QFN Package ...
Страница 17: ...17 MC96F6432A ABOV Semiconductor Co Ltd Figure 4 2 44 Pin MQFP Package ...
Страница 18: ...18 MC96F6432A ABOV Semiconductor Co Ltd Figure 4 3 32 Pin LQFP Package ...
Страница 19: ...19 MC96F6432A ABOV Semiconductor Co Ltd Figure 4 4 32 Pin SOP Package ...
Страница 20: ...20 MC96F6432A ABOV Semiconductor Co Ltd Figure 4 5 28 Pin SOP Package ...