A d v a n c e
I n f o r m a t i o n
Autoselect Mode
The autoselect mode provides manufacturer and device identification, and sector protection ver-
ification, through identifier codes output on DQ7–DQ0. This mode is primarily intended for
programming equipment to automatically match a device to be programmed with its correspond-
ing programming algorithm. However, the autoselect codes can also be accessed in-system
through the command register.
When using programming equipment, the autoselect mode requires V
ID
(11.5 V to 12.5 V) on
address pin A9. Address pins A6, A1, and A0 must be as shown in
Table 8.
In addition, when ver-
ifying sector protection, the sector address must appear on the appropriate highest order address
bits (see
Table 2 on page 14
and
Table 4 on page 16). Table 8
shows the remaining address bits
that are don’t care. When all necessary bits have been set as required, the programming equip-
ment may then read the corresponding identifier code on DQ7-DQ0.
To access the autoselect codes in-system, the host system can issue the autoselect command via
the command register, as shown in
Table 17 on page 38.
This method does not require V
ID
. See
“Command Definitions” for details on using the autoselect mode.
Table 8.
Description
Mode
CE#
L
L
L
L
L
L
S29AL032D Autoselect Codes (High Voltage Method)
WE#
H
H
H
H
H
H
A19
to
A12
X
X
A11
to
A10
X
X
A9
V
ID
V
ID
A8
to
A7
X
X
A6
L
L
A5
to
A4
X
X
A3
to
A2
L
L
A1
L
L
A0
L
H
DQ8
to
DQ15
X
N/A
22h
X
22h
X
X
DQ7
to
DQ0
01h
A3h
F6h
F6h
F9h
F9h
01h (protected)
00h
(unprotected)
85 (factory
locked)
05 (not factory
locked)
8D (factory
locked)
0D (not factory
locked)
9D (factory
locked)
1D (not factory
locked)
OE#
L
L
L
L
L
L
Manufacturer ID: Spansion
Device ID:
S29AL032D
(Model 00)
Device ID:
S29AL032D
(Model 03)
Device ID:
S29AL032D
(Model 04)
Sector Protection
Verification
Byte
Word
Byte
Word
Byte
X
X
V
ID
X
L
X
L
L
H
X
X
V
ID
X
L
X
L
L
H
L
L
H
SA
X
V
ID
X
L
X
L
H
L
X
X
Secured Silicon Sector
Indicator Bit (DQ7)
(Model 00)
L
L
H
X
X
V
ID
X
L
X
L
H
H
X
X
Secured Silicon Sector
Indicator Bit (DQ7)
(Model 03)
L
L
H
X
X
V
ID
X
L
X
L
H
H
X
X
Secured Silicon Sector
Indicator Bit (DQ7)
(Model 04)
L
L
H
X
X
V
ID
X
L
X
L
H
H
X
L = Logic Low = V
IL
, H = Logic High = V
IH
, SA = Sector Address, X = Don’t care.
Note:
The autoselect codes may also be accessed in-system via command sequences. See
Table 17 on page 38.
Sector Protection/Unprotection
The hardware sector protection feature disables both program and erase operations in any sector.
The hardware sector unprotection feature re-enables both program and erase operations in pre-
viously protected sectors.
20
S29AL032D
S29AL032D_00_A3 June 13, 2005
SPANSION [ SPANSION ]
