D at a
S hee t
Table 10.2
Sector Protection Commands (x16)
Cycles
Bus Cycles (Notes
First
Addr
555
XX
00
XX
555
XX
XXX
00
XX
555
XX
XX
SA
XX
555
XX
XXX
XX
555
XX
XX
SA
XX
Data
AA
A0
Data
90
AA
A0
PWD0
25
90
AA
A0
80
RD(0)
90
AA
A0
RD(0)
90
AA
A0
A0
RD(0)
90
XX
00
XX
2AA
SA
SA
00
55
00
01
555
E0
XX
2AA
XX
00
55
00
555
50
XX
2AA
PWAx
01
00
XX
2AA
SA
00
00
55
PWDx
PWD1
03
00
55
00
30
555
C0
02
00
PWD2
PWD0
03
01
PWD3
PWD1
02
PWD2
03
PWD3
00
29
555
60
Second
Addr
2AA
XXX
Data
55
Data
Third
Addr
555
Data
40
Fourth
Addr
Data
Fifth
Addr
Data
Sixth
Addr
Data
Seventh
Addr
Data
Command Sequence
(Notes)
Command Set Entry
Program
Read
Command Set Exit
Command Set Entry
Password
Protection
Program
Read
Unlock
Command Set Exit
Command Set Entry
PPB Program
All PPB Erase
(Notes
PPB Status Read
Command Set Exit
Command Set Entry
PPB Lock Bit Set
PPB Lock Bit Status Read
Command Set Exit
Command Set Entry
DYB Set
DYB Clear
DYB Status Read
Command Set Exit
3
2
1
2
3
2
4
7
2
3
2
2
1
2
3
2
1
2
3
2
2
1
2
Legend
X = Don’t care.
RA = Address of the memory location to be read.
SA = Sector Address. Any address that falls within a specified sector. See
Tables
for sector address ranges.
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.
Volatile Sector
Protection (DYB)
Global Volatile
Sector Protection
Freeze (PPB Lock)
Non-Volatile Sector
Protection (PPB)
Lock
Register Bits
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.
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 V
IH
when setting PPB or DYB.
12. “All PPB Erase” command pre-programs all PPBs before erasure to prevent
over-erasure.
52
S29GL-N MirrorBit
®
Flash Family
S29GL-N_01_09 November 16, 2007
SPANSION [ SPANSION ]
