![](http://datasheet.mmic.net.cn/160000/S29GL128N11FAIVH0_datasheet_9723049/S29GL128N11FAIVH0_51.png)
May 1, 2006 S29GL-N_01_A0
S29GL-N
49
Data
She e t
Legend
X = Don’t care.
RA = Address of the memory location to be read.
PWA = Password Address. Address bits A1 and A0 are used to select each 16-bit portion of the 64-bit entity.
PWD = Password Data.
RD(0) = DQ0 protection indicator bit. If protected, DQ0 = 0. If unprotected, DQ0 = 1.
Notes
1. All values are in hexadecimal.
2. Shaded cells indicate read cycles.
3. Address and data bits not specified in table, legend, or notes are don’t cares (each hex digit implies 4 bits of data).
4. Writing incorrect address and data values or writing them in the improper sequence may place the device in an unknown state. The system must write the reset
command to return the device to reading array data.
5. Entry commands are required to enter a specific mode to enable instructions only available within that mode.
6. No unlock or command cycles required when bank is reading array data.
7. Exit command must be issued to reset the device into read mode; device may otherwise be placed in an unknown state.
8. Entire two bus-cycle sequence must be entered for each portion of the password.
9. Full address range is required for reading password.
10. Password may be unlocked or read in any order. Unlocking requires the full password (all seven cycles).
11. ACC must be at VIH when setting PPB or DYB.
12. “All PPB Erase” command pre-programs all PPBs before erasure to prevent over-erasure.
Table 11.4 Sector Protection Commands (x8)
Command Sequence
(Notes)
Cyc
le
s
1st/8th
2nd/9th
3rd/10th
4th/11th
5th
6th
7th
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Lock
Register
Bits
3
AAA
AA
555
55
AAA
40
2
XXX
A0
XXX
Data
100
Data
2
XXX
90
XXX
00
Password
Protection
3
AAA
AA
555
55
AAA
60
2
XXX
A0
PWAx
PWDx
8
00
PWD
0
01
PWD1
02
PWD
2
03
PWD
3
04
PWD
4
05
PWD
5
06
PWD
6
07
PWD
7
1
00
25
00
03
00
PWD
0
01
PWD
1
02
PWD
2
03
PWD
3
04
PWD
4
05
PWD
5
06
PWD6
07
PWD
7
00
29
2XX
90
XX
00
Non-Volatile
Sector
Protection
(PPB)
3
AAA
AA
555
55
AAA
C0
2
XXX
A0
SA
00
XXX
80
00
30
PPB Status Read
1
SA
RD(0)
2
XXX
90
XXX
00
Global
Volatile
Sector
Protection
Freeze
(PPB Lock)
3
AAA
AA
555
55
AAA
50
PPB Lock Bit Set
2
XXX
A0
XXX
00
PPB Lock Bit Status
Read
1XXX
RD(0)
2
XXX
90
XX
00
Volatile
Sector
Protection
(DYB)
3
AAA
AA
555
55
AAA
E0
DYB Set
2
XXX
A0
SA
00
DYB Clear
2
XXX
A0
SA
01
DYB Status Read
1
SA
RD(0)
2
XXX
90
XXX
00