m28w640fcb STMicroelectronics, m28w640fcb Datasheet - Page 24

• Manufacturer Part Number: m28w640fcb
• Description: 64 Mbit 4mb X16, Boot Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

Command interface
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Table 5.
1. RP = V
Table 6.
1. A Locked-Down Block can be locked "DQ0 = 1" or unlocked "DQ0 = 0"; see Block Locking section.
Manufacture
Code
Device Code
Block Status
Locked Block
Unlocked
Block
Locked-
Down Block
Code
IH
.
Read Electronic signature
Read Block Lock signature
M28W640
M28W640
V
V
V
Device
E
IL
IL
IL
FCT
FCB
V
V
V
G
IL
IL
IL
V
V
V
W
V
V
V
IH
IH
IH
E
IL
IL
IL
A0
V
V
V
IL
IL
IL
V
V
V
G
IL
IL
IL
V
V
V
A1
IH
IH
IH
V
V
V
W
IH
IH
IH
A2-A7
(1)
V
V
A0
V
0
0
0
IH
IH
IL
V
V
V
A1 A2-A7
A8-A11
IL
IL
IL
Don't
Don't
Don't
Care
Care
Care
0
0
0
A12-A21
Address
Address
Address
Don't Care
Don't Care
Don't Care
Block
Block
Block
A8-A21
M28W640FCT, M28W640FCB
DQ0 DQ1
X
DQ0-DQ7
1
0
(1)
20h
48h
49h
0
0
1
DQ15
DQ15
DQ8-
DQ2-
00h
88h
88h
00h
00h
00h