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M29W640FT 数据表(PDF) 27 Page - STMicroelectronics

部件名 M29W640FT
功能描述  64 Mbit (8Mb x8 or 4Mb x16, Page, Boot Block) 3V Supply Flash Memory
PDF  72 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M29W640FT 数据表(HTML) 27 Page - STMicroelectronics

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M29W640FT, M29W640FB
4 Command Interface
27/72
4.3.3
Block Protect and Chip Unprotect commands
Groups of blocks can be protected against accidental Program or Erase. The Protection
Groups are shown in Appendix A: Block addresses, Table 20: Top Boot Block Addresses,
M29W640FT and Table 21: Bottom Boot Block Addresses, M29W640FB. 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: Block Protection.
Table 5.
Commands, 16-bit mode, BYTE = VIH
1.
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 VIH.
Command
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
Quadruple Word
Program
5
555
56
PA0
PD0
PA1
PD1
PA2
PD2
PA3
PD3
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
Program/Erase
Suspend
1
X
B0
Program/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



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