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參數(shù)資料
| 型號(hào)： | AM29DS323DB50EIN |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| 中文描述： | 32兆位（4個(gè)M × 8位/ 2米x 16位），1.8伏的CMOS只，同時(shí)作業(yè)快閃記憶體 |
| 文件頁(yè)數(shù)： | 18/56頁(yè) |
| 文件大?。?/td> | 641K |
| 代理商： | AM29DS323DB50EIN |
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16
Am29DS323D
23480A5 October10,2006
D A T A S H E E T
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
programmed with its corresponding programming al-
gorithm. However, the autoselect codes can also be
accessed in-system through the command register.
When using programming equipment, the autoselect
mode requires V
ID
(9.0 V to 11.0 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.
Am29DS323D Autoselect Codes (High Voltage Method)
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.
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: Am29DS323D
L
L
H
BA
X
V
ID
X
L
X
L
H
22h
X
B7h (T), B8h (B)
Sector Protection
Verification
L
L
H
SA
X
V
ID
X
L
X
H
L
X
X
01h (protected),
00h (unprotected)
Secured Silicon Sector
Indicator Bit (DQ7)
L
L
H
BA
X
V
ID
X
L
X
H
H
X
X
85h (factory locked),
05h (not factory
locked)
相關(guān)PDF資料 |
PDF描述 |
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| AM29DS323DB50WMI | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| AM29DS323DB50WMIN | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| AM29DS323DT50EI | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| AM29DS323DT50EIN | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
| AM29DS323DT50WMI | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation Flash Memory |
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