AM29LV320DT90EI AMD (ADVANCED MICRO DEVICES), AM29LV320DT90EI Datasheet - Page 18

• Manufacturer Part Number: AM29LV320DT90EI
• Description: Flash Memory IC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM29LV320DT90EI

• Memory Configuration: 4M X 8 / 2M X 16 Bit
• Package/case: 48-TSOP
• Supply Voltage Max: 3.6V
• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Access Time, Tacc: 90nS
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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
A9. Address pins A6, A1, and A0 must be as shown in
Table 6 on page 16. In addition, when verifying sector
Legend: T = Top Boot Block, B = Bottom Boot Block, L = Logic Low = V
care.
16
Manufacturer ID: AMD
Device ID: Am29LV320D
Sector Protection Verification
Secured Silicon Sector
Indicator Bit (DQ7)
Description
ID
(11.5 V to 12.5 V) on address pin
CE#
L
L
L
L
OE#
Table 6. Autoselect Codes (High Voltage Method)
L
L
L
L
WE#
H
H
H
H
A20
A12
SA
to
X
X
X
D A T A S H E E T
A11
A10
to
X
X
X
X
Am29LV320D
V
V
V
V
A9
ID
ID
ID
ID
A8
A7
to
X
X
X
X
protection, the sector address must appear on the ap-
propriate highest order address bits (see Table 2 on
page 13 through Table 5 on page 15). Table 6 on
page 16 shows the remaining address bits that are
don’t care. When all necessary bits are set as re-
quired, the programming equipment 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 14 on page 29.
This method does not require V
toselect Command Sequence” on page 25 section for
more information.
A6
L
L
L
L
IL
, H = Logic High = V
A5
A2
to
X
X
X
X
A1
H
H
L
L
A0
H
H
L
L
BYTE#=
22h
DQ8 to DQ15
V
IH
X
X
X
IH
, SA = Sector Address, X = Don’t
BYTE#
= V
X
X
X
X
IL
ID
December 14, 2005
. Refer to the “Au-
19h (not factory locked)
99h (factory locked),
00h (unprotected)
01h (protected),
F6 (T), F9h (B)
DQ7
DQ0
01h
to