A d v a n c e
I n f o r m a t i o n
method does not require V
ID
. Refer to the Autoselect Command Sequence section
for more information.
Table 12.
A22 A14
to
to
A15 A10 A9
X
X
V
ID
Autoselect Codes, (High Voltage Method)
A8
to
A7
X
A5
to
A4
X
A3
to
A2
L
L
H
DQ8 to DQ15
BYTE# = BYTE# =
V
IH
V
IL
A0
L
H
L
H
H
L
H
00
22
22
22
22
22
22
X
X
X
X
X
X
X
DQ7 to DQ0
Model Number
R1, R2, R8, R9
01h
7Eh
0Ch
01h
7Eh
1Dh
00h
R3, R4
01h
7Eh
10h
00h (-R4,
bottom boot)
01h (-R3, top
boot)
7Eh
1Ah
00h (-R4,
bottom boot)
01h (-R3,
top boot)
01h (protected),
00h (unprotected)
98h (factory locked),
18h (not factory locked)
R5, R6, R7
01h
7Eh
13h
01h
S29GL064A
Description
Manufacturer
ID: Spansion
Products
Cycle 1
Cycle 2
Cycle 3
Cycle 1
Cycle 2
CE# OE#
L
L
WE#
H
A6
L
A1
L
L
H
H
L
H
H
L
L
H
X
X
V
ID
X
L
X
H
L
H
S29GL032M
L
Cycle 3
L
H
X
X
V
ID
X
L
X
H
Sector Group
Protection
Verification
Secured Silicon
Sector Indicator
Bit (DQ7), WP#
protects highest
address sector
Secured Silicon
Sector Indicator
Bit (DQ7), WP#
protects lowest
address sector
L
L
H
SA
X
V
ID
X
L
X
L
H
L
X
X
L
L
H
X
X
V
ID
X
L
X
L
H
H
X
X
L
L
H
X
X
V
ID
X
L
X
L
H
H
X
X
88h (factory locked),
08h (not factory locked)
Legend:
L = Logic Low = V
IL
, H = Logic High = V
IH
, 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 (see
The hardware sector
group unprotection feature re-enables both program and erase operations in pre-
viously protected sector groups. Sector group protection/unprotection can be
implemented via two methods.
Sector protection/unprotection requires V
ID
on the RESET# pin only, and can be
implemented either in-system or via programming equipment.
shows
the algorithms and
shows the timing diagram. This method uses stan-
dard microprocessor bus cycle timing. For sector group unprotect, all unprotected
sector groups must first be protected prior to the first sector group unprotect
write cycle.
The device is shipped with all sector groups unprotected. Spansion offers the op-
tion of programming and protecting sector groups at its factory prior to shipping
the device through Spansion Programming Service. Contact a Spansion represen-
tative for details.
It is possible to determine whether a sector group is protected or unprotected.
See the
Autoselect Mode
section for details.
January 28, 2005 S29GLxxxA_00_A2
S29GLxxxA MirrorBit™ Flash Family
31
SPANSION [ SPANSION ]
