A d v a n c e I n f o r m a t i o n
Table 31 on page 55. This method does not require V . Refer to the Autoselect
ID
Command Sequence section for more information.
Table 15. Autoselect Codes, (High Voltage Method)
DQ7 to DQ0
DQ8 to DQ15
A22 A14
CE# OE# WE# to to A9 to A6 to to A1 A0
A15 A10
A8
A5 A3
Model Number
Description
R5,
R6,
R7
BYTE#
= V
BYTE#
R1, R2,
R8, R9
A7
A4 A2
R3, R4
= V
IH
IL
Manufacturer ID
:
V
V
L
L
L
L
H
H
X
X
X
X
X
L
L
X
X
L
L
L
00
X
01h
01h
01h
ID
ID
Spansion Products
Cycle 1
L
L
H
L
22
22
X
X
7Eh
0Ch
7Eh
10h
7Eh
13h
Cycle 2
H
H
X
X
X
00h (-R4, bottom boot)
01h (-R3, top boot)
Cycle 3
H
H
H
22
X
01h
01h
Cycle 1
Cycle 2
L
L
H
L
22
22
X
X
7Eh
1Dh
7Eh
1Ah
H
H
V
V
L
L
L
L
H
H
X
X
X
X
L
X
X
ID
ID
00h (-R4, bottom boot)
01h (-R3, top boot)
Cycle 3
H
X
H
L
H
22
X
00h
C4h (-R2, bottom boot)
49h (-R1, top boot)
Cycle 1
X
H
22
X
Sector Group
Protection
Verification
01h (protected),
V
V
L
L
L
L
H
H
SA
X
X
X
X
X
L
L
X
X
L
L
H
H
L
X
X
X
X
ID
ID
00h (unprotected)
Secured Silicon
Sector Indicator
Bit (DQ7), WP#
protects highest
address sector
For S29GL064A and S29GL032A:
99h (factory locked), 19h (not factory locked)
For S29GL016A:
H
94h (factory locked), 14h (not factory locked)
Secured Silicon
Sector Indicator
Bit (DQ7), WP#
protects lowest
address sector
For S29GL064A and S29GL032A:
89h (factory locked), 09h (not factory locked)
For S29GL016A:
V
L
L
H
X
X
X
L
X
L
H
H
X
X
ID
84h (factory locked), 04h (not factory locked)
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 (see Tables 14 – 25). The hardware sector group
unprotection feature re-enables both program and erase operations in previously
protected sector groups. Sector group protection/unprotection can be imple-
mented 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, on page
36 shows the algorithms and Figure 24, on page 80 shows the timing diagram.
This method uses standard 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 repre-
sentative for details.
It is possible to determine whether a sector group is protected or unprotected.
See Autoselect Mode on page 30 for details.
April 22, 2005 S29GL-A_00_A3
S29GL-A MirrorBit™ Flash Family
31
SPANSION [ SPANSION ]
