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AM29DL322D Datasheet(PDF) 16 Page - Advanced Micro Devices

No. de pieza AM29DL322D
Descripción Electrónicos  32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory
PDF  54 Pages
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Fabricante Electrónico  AMD [Advanced Micro Devices]
Página de inicio  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM29DL322D Datasheet(HTML) 16 Page - Advanced Micro Devices

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June 10, 2003
Am29DL322D/323D/324D
15
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. In addition, when verifying sector protection,
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-
mand Sequence section for more information.
Table 7.
Autoselect Codes, (High Voltage Method)
Legend: T = Top Boot Block, B = Bottom Boot Block, L = Logic Low = V
IL, H = Logic High = VIH, BA = Bank Address, SA = Sector Address, X
= Don’t care.
Description
CE#
OE#
WE#
A20
to
A12
A11
to
A10
A9
A8
to
A7
A6
A5
to
A2
A1
A0
DQ8 to DQ15
DQ7
to
DQ0
BYTE#
= V
IH
BYTE#
= V
IL
Manufacturer ID: AMD
L
L
H
BA
X
V
ID
X
L
X
L
L
X
X
01h
Device ID: Am29DL322D
L
L
H
BA
X
V
ID
X
L
X
L
H
22h
X
55h (T), 56h (B)
Device ID: Am29DL323D
L
L
H
BA
X
V
ID
X
L
X
L
H
22h
X
50h (T), 53h (B)
Device ID: Am29DL324D
L
L
H
BA
X
V
ID
X
L
X
L
H
22h
X
5Ch (T), 5Fh (B)
Sector Protection
Verification
LL
H
SA
X
V
ID
XLX
H
L
X
X
01h (protected),
00h (unprotected)
SecSi
 Indicator Bit
(DQ7)
LL
H
BA
X
V
ID
XLX
H
H
X
X
81h (factory locked),
01h (not factory
locked)



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