Document Number: 001-98285 Rev. *R
Page 56 of 108
S29GL01GS/S29GL512S
S29GL256S/S29GL128S
Lock Register Command Set Definitions
Lo
ck
R
egi
st
er
A
S
O
Lock Register Entry
3
555
AA
2AA
55
555
40
Program
2
XXX
A0
XXX
PD
Read
1
0
RD
Command Set Exit
(Notes
,
2
XXX
90
XXX
0
Reset/ASO Exit
(Notes
1
XXX
F0
Password Protection Command Set Definitions
Pa
ss
word
A
SO
Password ASO Entry
3
555
AA
2AA
55
555
60
Program
2
XXX
A0
PWA
x
PWDx
Read
4
0
PWD0
1
PWD1
2
PWD2
3
PWD
3
Unlock
7
0
25
0
3
0
PWD0
1
PWD 1
2
PWD2
3
PWD
3
0
29
Command Set Exit
(Notes
,
2
XXX
90
XXX
0
Reset/ASO Exit
(Notes
1
XXX
F0
Non-Volatile Sector Protection Command Set Definitions
PP
B
(Non-V
o
la
til
e
S
ecto
r P
rot
ecti
on)
PPB Entry
3
555
AA
2AA
55
555
C0
PPB Program
2
XXX
A0
SA
0
2
XXX
80
0
30
PPB Read
1
SA
RD (0)
Command Set Exit
(Notes
,
2
XXX
90
XXX
0
Reset/ASO Exit
(Notes
1
XXX
F0
Global Non-Volatile Sector Protection Freeze Command Set Definitions
PP
B
Lock
Bit
PPB Lock Entry
3
555
AA
2AA
55
555
50
PPB Lock Bit Cleared
2
XXX
A0
XXX
0
PPB Lock Status Read
1
XXX
RD (0)
Command Set Exit
(Notes
,
2
XXX
90
XXX
0
Reset/ASO Exit
1
XXX
F0
Table 7.1
Command Definitions (Continued)
Command Sequence
(Note 1)
C
ycl
es
Bus Cycles (Notes
2
–
5
)
First
Second
Third
Fourth
Fifth
Sixth
Seventh
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data