M29W640FB STMICROELECTRONICS [STMicroelectronics], M29W640FB Datasheet - Page 27

• Manufacturer Part Number: M29W640FB
• Description: 64 Mbit (8Mb x8 or 4Mb x16, Page, Boot Block) 3V Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M29W640FT, M29W640FB
4.3.3
Table 5.
1. X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block. All values in the table are in
Read/Reset
Auto Select
Program
Double Word Program
Quadruple Word
Program
Unlock Bypass
Unlock Bypass
Program
Unlock Bypass Reset
Chip Erase
Block Erase
Program/Erase
Suspend
Program/Erase
Resume
Read CFI Query
Enter Extended Block
Exit Extended Block
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
Command
Block Protect and Chip Unprotect commands
Groups of blocks can be protected against accidental Program or Erase. The Protection
Groups are shown in
M29W640FT
be unprotected to allow the data inside the blocks to be changed.
Block Protect and Chip Unprotect operations are described in
Commands, 16-bit mode, BYTE = V
and
6+
1
3
3
4
3
5
3
2
2
6
1
1
1
3
4
Addr Data Addr Data
Table 21: Bottom Boot Block Addresses,
555
555
555
555
555
555
555
555
555
555
55
X
X
X
X
X
Appendix A: Block
1st
AA
AA
AA
AA
A0
AA
AA
B0
AA
AA
F0
50
56
90
30
98
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
PA0
PA0
PA
X
IL
2nd
or DQ15 when BYTE is V
PD0
PD0
PD
55
55
55
55
00
55
55
55
55
IH
addresses,
Addr
PA1
PA1
555
555
555
555
555
555
555
Bus Write Operations
X
3rd
Data Addr Data Addr Data Addr Data
PD1
PD1
F0
A0
90
20
80
80
88
90
Table 20: Top Boot Block Addresses,
IH
.
PA2
555
555
PA
X
M29W640FB. The whole chip can
4th
Appendix D: Block
PD2
PD
AA
AA
00
PA3
2AA
2AA
5th
4 Command Interface
PD3
55
55
Protection.
555
BA
6th
27/72
10
30