S29GL256N10TFI023 ETC, S29GL256N10TFI023 Datasheet - Page 45

• Manufacturer Part Number: S29GL256N10TFI023
• Description: MirrorBit Flash Family
• Manufacturer: ETC

Legend: L = Logic Low = V
May 13, 2004 27631A4
Manufacturer ID:
Spansion Product
Sector Group
Protection Verification
SecSi Sector Indicator
Bit (DQ7), WP#
protects highest
address sector
SecSi Sector Indicator
Bit (DQ7), WP#
protects lowest
address sector
Description
Cycle 1
Cycle 2
Cycle 3
Cycle 1
Cycle 2
Cycle 3
Cycle 1
Cycle 2
Cycle 3
Sector Protection
The device features several levels of sector protection, which can disable both the
program and erase operations in certain sectors or sector groups:
Persistent Sector Protection
A command sector protection method that replaces the old 12 V controlled pro-
tection method.
Password Sector Protection
A highly sophisticated protection method that requires a password before
changes to certain sectors or sector groups are permitted
WP# Hardware Protection
A write protect pin that can prevent program or erase operations in the outermost
sectors.
The WP# Hardware Protection feature is always available, independent of the
software managed protection method chosen.
Selecting a Sector Protection Mode
All parts default to operate in the Persistent Sector Protection mode. The cus-
tomer must then choose if the Persistent or Password Protection method is most
desirable. There are two one-time programmable non-volatile bits that define
which sector protection method will be used. If the customer decides to continue
CE#
L
L
L
L
L
L
L
IL
OE#
, H = Logic High = V
L
L
L
L
L
L
L
A d v a n c e
Table 5. Autoselect Codes, (High Voltage Method)
WE
#
H
H
H
H
H
H
H
A22
A15
SA
to
X
X
X
X
X
X
S29GLxxxN MirrorBitTM Flash Family
A14
A10
to
X
X
X
X
X
X
X
IH
I n f o r m a t i o n
, SA = Sector Address, X = Don’t care.
V
V
V
V
V
V
V
A9
ID
ID
ID
ID
ID
ID
ID
A8
A7
to
X
X
X
X
X
X
X
A6
L
L
L
L
L
L
L
A5
A4
to
X
X
X
X
X
X
X
A3
A2
to
H
H
H
H
H
H
L
L
L
L
L
L
L
A1
H
H
H
H
H
H
H
H
H
L
L
L
L
A0
H
H
H
H
H
H
H
H
L
L
L
L
L
BYTE#=
V
DQ8 to DQ15
00
22
22
22
22
22
22
22
22
22
X
X
X
IH
BYTE#
= V
X
X
X
X
X
X
X
X
X
X
X
X
X
IL
18h (not factory locked)
08h (not factory locked)
98h (factory locked),
88h (factory locked),
00h (unprotected)
01h (protected),
DQ7 to DQ0
01h
7Eh
23h
01h
7Eh
22h
01h
7Eh
21h
01h
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