參數(shù)資料
型號: M29W640DT90ZA1E
廠商: 意法半導(dǎo)體
英文描述: 64 Mbit 8Mb x8 or 4Mb x16, Boot Block 3V Supply Flash Memory
中文描述: 64兆位和8Mb x8或4Mb的x16插槽,啟動塊3V電源快閃記憶體
文件頁數(shù): 15/49頁
文件大?。?/td> 945K
代理商: M29W640DT90ZA1E
15/49
M29W640DT, M29W640DB
tended Block mode the Boot Blocks are not acces-
sible.
To exit from the Extended Block mode the Exit Ex-
tended Block command must be issued.
The Extended Block can be protected, however
once protected the protection cannot be undone.
Exit Extended Block Command
The Exit Extended Block command is used to exit
from the Extended Block mode and return the de-
vice to Read mode. Four Bus Write operations are
required to issue the command.
Block Protect and
Chip Unprotect Commands
Groups of blocks can be protected against acci-
dental Program or Erase. The Protection Groups
are shown in
APPENDIX A.
,
Table 19.
and
Table
20., Bottom Boot Block Addresses, M29W640DB
.
The whole chip can be unprotected to allow the
data inside the blocks to be changed.
Block Protect and Chip Unprotect operations are
described in
APPENDIX D.
.
Table 4. Commands, 16-bit mode, BYTE = V
IH
Note: X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block. All values in the table are in hexadecimal.
The Command Interface only uses A–1, A0-A10 and DQ0-DQ7 to verify the commands; A11-A20, DQ8-DQ14 and DQ15 are Don’t
Care. DQ15A–1 is A–1 when BYTE is V
IL
or DQ15 when BYTE is V
IH
.
Table 5. Commands, 8-bit mode, BYTE = V
IL
Command
L
Bus Write Operations
1st
2nd
3rd
4th
5th
6th
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Read/Reset
1
X
F0
3
555
AA
2AA
55
X
F0
Auto Select
3
555
AA
2AA
55
555
90
Program
4
555
AA
2AA
55
555
A0
PA
PD
Double Word Program
3
555
50
PA0
PD0
PA1
PD1
Unlock Bypass
3
555
AA
2AA
55
555
20
Unlock Bypass
Program
2
X
A0
PA
PD
Unlock Bypass Reset
2
X
90
X
00
Chip Erase
6
555
AA
2AA
55
555
80
555
AA
2AA
55
555
10
Block Erase
6+
555
AA
2AA
55
555
80
555
AA
2AA
55
BA
30
Erase Suspend
1
X
B0
Erase Resume
1
X
30
Read CFI Query
1
55
98
Enter Extended Block
3
555
AA
2AA
55
555
88
Exit Extended Block
4
555
AA
2AA
55
555
90
X
00
Command
L
Bus Write Operations
1st
2nd
3rd
4th
5th
6th
Add
Data
Add
Data
Add
Data
Add
Data
Add
Data
Add
Data
Read/Reset
1
X
F0
3
AAA
AA
555
55
X
F0
Auto Select
3
AAA
AA
555
55
AAA
90
相關(guān)PDF資料
PDF描述
M29W640DB90ZA1E 64 Mbit 8Mb x8 or 4Mb x16, Boot Block 3V Supply Flash Memory
M29W640DB 64 Mbit 8Mb x8 or 4Mb x16, Boot Block 3V Supply Flash Memory
M29W640DB70N1E 64 Mbit 8Mb x8 or 4Mb x16, Boot Block 3V Supply Flash Memory
M29W640DB70N1F 64 Mbit 8Mb x8 or 4Mb x16, Boot Block 3V Supply Flash Memory
M29W640DB70N1T 64 Mbit 8Mb x8 or 4Mb x16, Boot Block 3V Supply Flash Memory
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