P r e l i m i n a r y
Table 14. Autoselect Codes, (High Voltage Method)
DQ7 to DQ0
A2 A1
A
5
A
3
DQ8 to DQ15
BYTE
Model Number
2t
o
4
A8
to
A7
CE
#
WE
#
A
1
A
0
Description
OE#
to
A9
A6 to to
A1 A1
A
4
A
2
# =
BYTE#
= VIL
R5,R6
,R7
5
0
VIH
R0 R1,R2
R3,R4
ManufacturerID:
Spansion
L
L
L
L
H
H
X
X
V
V
X
X
L
L
X
X
L
L
L
00
X
01h
01h
01h
01h
ID
ID
Products
Cycle 1
Cycle 2
Cycle 3
Cycle 1
Cycle 2
Cycle 3
Cycle 1
Cycle 2
L
H
H
L
L
H
H
L
H
L
22
22
22
22
22
22
22
22
X
X
X
X
X
X
X
X
7Eh
12h
01h
7Eh
12h
00h
7Eh
0Ch
X
X
X
X
H
H
L
L
L
L
L
H
H
V
V
X
X
L
L
X
X
H
H
L
H
H
L
ID
H
H
L
7Eh
13h
7Eh
10h
7Eh
13h
H
H
X
X
X
X
ID
00h (-R4, bottom
boot)
01h (-R3, top
boot)
Cycle 3
H
H
H
22
X
00h
01h
01h
Cycle 1
Cycle 2
L
L
H
L
22
22
X
X
7Eh
1Ch
7Eh
1Dh
7Eh
1Ah
H
H
L
L
H
V
X
L
X
ID
00h (-R4, bottom
boot)
01h (-R3, top
boot)
Cycle 3
H
L
H
H
H
L
22
X
X
X
00h
00h
Sector Group
Protection
Verification
01h (protected),
00h (unprotected)
L
L
L
L
H
H
SA
X
X
X
V
V
X
X
L
L
X
X
ID
ID
SecSi Sector
Indicator Bit
(DQ7), WP#
protects highest
address sector
98h (factory locked),
18h (not factory locked)
L
L
H
H
H
H
X
X
X
X
SecSi Sector
Indicator Bit
(DQ7), WP#
protects lowest
address sector
88h (factory locked),
08h (not factory locked)
L
L
H
X
X
V
X
L
X
ID
Legend: L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
Sector Group Protection and Unprotection
The hardware sector group protection feature disables both program and erase
operations in any sector group. In this device, a sector group consists of four ad-
jacent sectors that are protected or unprotected at the same time (see Table 4).
The hardware sector group unprotection feature re-enables both program and
erase operations in previously protected sector groups. Sector group protection/
unprotection can be implemented via two methods.
Sector protection/unprotection requires V on the RESET# pin only, and can be
ID
implemented either in-system or via programming equipment. Figure 2 shows
the algorithms and Figure 24 shows the timing diagram. This method uses stan-
April 30, 2004 S29GLxxxM_00A5
S29GLxxxM MirrorBitTM Flash Family
79
SPANSION [ SPANSION ]
