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M29DW640F Datasheet(PDF) 29 Page - Numonyx B.V

Part # M29DW640F
Description  64 Mbit (8Mb x8 or 4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
PDF  74 Pages
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Manufacturer  NUMONYX [Numonyx B.V]
Direct Link  http://www.numonyx.com
Logo NUMONYX - Numonyx B.V

M29DW640F Datasheet(HTML) 29 Page - Numonyx B.V

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Command interface
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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, Table 24: Block addresses. 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 6.
Commands, 16-bit mode, BYTE = VIH
Command
Bus Write operations(1)
1st
2nd
3rd
4th
5th
6th
Add
Data
Add
Data
Add
Data
Add
Data
Add
Data
Add
Data
Read/Reset
1X
F0
3555
AA
2AA
55
X
F0
Auto Select
3
555
AA
2AA
55
(BKA)
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
3
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
Erase/Program Suspend
1
BKA
B0
Erase/Program Resume
1
BKA
30
Read CFI Query(2)
1
(BKA)
55
98
Enter Extended Block
3
555
AA
2AA
55
555
88
Exit Extended Block
4
555
AA
2AA
55
555
90
X
00
1.
X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block, BKA Bank Address. All values in the
table are in hexadecimal.
2.
Normally the Command Interface only uses A–1, A0-A10 and DQ0-DQ7 to verify the commands and A11-A21 are Don’t
Care, however for the Read CFI command A21-A14 must specify a bank address, and the subsequent read operations
must be addressed to the same bank.



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