M28W640 STMicroelectronics, M28W640 Datasheet - Page 15

• Manufacturer Part Number: M28W640
• Description: 64 Mbit 4Mb x16/ Boot Block 3V Supply Flash Memory
• Manufacturer: STMicroelectronics

Table 5. Read Block Lock Signature
Note: 1. A Locked-Down Block can be locked "DQ0 = 1" or unlocked "DQ0 = 0"; see Block Locking section.
Table 6. Read Protection Register and Lock Register
Locked Block
Unlocked Block
Locked-Down
Block
Lock
Unique ID 0
Unique ID 1
Unique ID 2
Unique ID 3
OTP 0
OTP 1
OTP 2
OTP 3
OTP 4
OTP 5
OTP 6
OTP 7
Block Status
Word
V
V
V
V
V
V
V
V
V
V
V
V
V
E
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
G
E
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
IL
V
V
V
V
V
V
V
V
V
V
V
V
V
W
V
V
V
IH
IH
IH
IH
IH
IH
IH
IH
IH
IH
IH
IH
IH
G
IL
IL
IL
A0-A7
8Ch
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
V
V
V
W
IH
IH
IH
V
V
V
A0
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
IL
IL
IL
A8-A21
V
V
V
A1
IH
IH
IH
A2-A7
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
0
0
0
ID data
ID data
ID data
ID data
DQ0
0
Don't Care Block Address
Don't Care Block Address
Don't Care Block Address
A8-A11
OTP Prot.
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
ID data
ID data
ID data
ID data
DQ1
data
A12-A21
M28W640CT, M28W640CB
prot. data
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
OTP data
Security
ID data
ID data
ID data
ID data
DQ2
DQ0
X
1
0
(1)
DQ3-DQ7 DQ8-DQ15
OTP data OTP data
OTP data OTP data
OTP data OTP data
OTP data OTP data
OTP data OTP data
OTP data OTP data
OTP data OTP data
OTP data OTP data
ID data
ID data
ID data
ID data
00h
DQ1
0
0
1
DQ2-DQ15
ID data
ID data
ID data
ID data
00h
00h
00h
00h
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