AM29DL323GB90EI AMD (ADVANCED MICRO DEVICES), AM29DL323GB90EI Datasheet - Page 15

• Manufacturer Part Number: AM29DL323GB90EI
• Description: Flash Memory IC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM29DL323GB90EI

• Memory Configuration: 4M X 8 / 2M X 16 Bit
• Supply Voltage Max: 3.6V
• Access Time, Tacc: 90nS
• Mounting Type: Surface Mount
• Supply Voltage: 3V

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-
gramm ed w ith its corresponding programm ing
algorithm. However, the autoselect codes can also be
accessed in-system through the command register.
When using programming equipment, the autoselect
mode requires V
Address pins A6, A1, and A0 must be as shown in
Legend: T = Top Boot Block, B = Bottom Boot Block, L = Logic Low = V
= Don’t care.
March 26, 2004
Manufacturer ID: AMD
Device ID: Am29DL322G
Device ID: Am29DL323G
Device ID: Am29DL324G
Sector Protection
Verification
SecSi™ Indicator Bit
(DQ7)
Description
ID
(8.5 V to 12.5 V) on address pin A9.
CE# OE#
L
L
L
L
L
L
Table 6. Autoselect Codes, (High Voltage Method)
L
L
L
L
L
L
A D V A N C E
WE#
H
H
H
H
H
H
A20
A12
BA
BA
BA
BA
SA
BA
to
A11
A10
to
X
X
X
X
X
X
Am29DL32xG
A9
V
V
V
V
V
V
ID
ID
ID
ID
ID
ID
I N F O R M A T I O N
IL
A8
A7
to
X
X
X
X
X
X
, H = Logic High = V
Table 6. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Tables 3–5). Table 6
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 13. This method
does not require V
mand Sequence section for more information.
A6
L
L
L
L
L
L
A5
A2
to
X
X
X
X
X
X
A1
H
H
L
L
L
L
IH
, BA = Bank Address, SA = Sector Address, X
A0
H
H
H
H
L
L
ID
BYTE#
. Refer to the Autoselect Com-
= V
DQ8 to DQ15
22h
22h
22h
X
X
X
IH
BYTE#
= V
X
X
X
X
X
X
IL
82h (factory locked),
00h (unprotected)
5Ch (T), 5Fh (B)
55h (T), 56h (B)
50h (T), 53h (B)
01h (protected),
02h (not factory
locked)
DQ7
DQ0
01h
to
15