D A T A
S H E E T
the sector address must appear on the appropriate
highest order address bits (see Tables 3–6). Table 7
shows the remaining address bits that are don’t care.
When all necessary bits have been set as required,
the programming equipment may then read the corre-
sponding 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 14. This method
does not require V
ID
. Refer to the Autoselect Com-
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equip-
ment to automatically match a device to be pro-
grammed with its corresponding 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
(8.5 V to 12.5 V) on address pin A9.
Address pins A6, A1, and A0 must be as shown in
Table 7.
Autoselect Codes, (High Voltage Method)
A20
to
A12
BA
BA
BA
BA
SA
A11
to
A10
X
X
X
X
X
A8
to
A7
X
X
X
X
X
A5
to
A2
X
X
X
X
X
DQ8 to DQ15
A1
L
L
L
L
H
A0
L
H
H
H
L
BYTE# BYTE#
= V
IH
= V
IL
X
22h
22h
22h
X
X
X
X
X
X
DQ7
to
DQ0
01h
55h (T), 56h (B)
50h (T), 53h (B)
5Ch (T), 5Fh (B)
01h (protected),
00h (unprotected)
82h (factory locked),
02h (not factory
locked)
Description
Manufacturer ID: AMD
Device ID: Am29DL322G
Device ID: Am29DL323G
Device ID: Am29DL324G
Sector Protection
Verification
Secured Silicon Indicator
Bit (DQ7)
CE#
L
L
L
L
L
OE#
L
L
L
L
L
WE#
H
H
H
H
H
A9
V
ID
V
ID
V
ID
V
ID
V
ID
A6
L
L
L
L
L
L
L
H
BA
X
V
ID
X
L
X
H
H
X
X
Legend:
T = Top Boot Block, B = Bottom Boot Block, L = Logic Low = V
IL
, H = Logic High = V
IH
, BA = Bank Address, SA = Sector Address, X =
Don’t care.
December 4, 2006 25686B10
Am29DL32xG
17
SPANSION [ SPANSION ]
