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 (11.5 V to 12.5 V) on
ID
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 . See
ID
“Command Definitions” for details on using the autoselect mode.
Table 8. S29AL032D Autoselect Codes (High Voltage Method)
A19 A11
to to
A12 A10
A8
to
A7
A5
to
A4
A3
to
A2
DQ8
to
DQ15
DQ7
to
DQ0
Description
Mode
CE#
OE#
WE#
A9
A6
L
A1
L
A0
L
Manufacturer ID: Spansion
L
L
L
L
H
H
X
X
V
V
X
X
L
X
01h
ID
ID
Device ID:
S29AL032D
(Model 00)
Byte
X
X
X
L
X
L
L
H
N/A
A3h
Device ID:
S29AL032D
(Model 03)
Word
Byte
Word
Byte
L
L
L
L
L
L
L
L
H
H
H
H
22h
X
F6h
X
X
X
X
V
V
X
X
L
L
X
X
L
L
L
L
H
H
ID
ID
F6h
F9h
Device ID:
S29AL032D
(Model 04)
22h
X
F9h
X
01h (protected)
Sector Protection
Verification
L
L
L
L
H
H
SA
X
X
X
V
V
X
X
L
L
X
X
L
L
H
H
L
ID
ID
00h
(unprotected)
X
X
X
X
X
X
X
85 (factory
locked)
Secured Silicon Sector
Indicator Bit (DQ7)
(Model 00)
H
05 (not factory
locked)
8D (factory
locked)
Secured Silicon Sector
Indicator Bit (DQ7)
(Model 03)
L
L
L
L
H
H
X
X
X
X
V
V
X
X
L
L
X
X
L
L
H
H
H
H
ID
ID
0D (not factory
locked)
9D (factory
locked)
Secured Silicon Sector
Indicator Bit (DQ7)
(Model 04)
1D (not factory
locked)
L = Logic Low = VIL, H = Logic High = VIH, 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 ]
