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AM29LV081B-90EI Arkusz danych(PDF) 11 Page - Advanced Micro Devices

Numer części AM29LV081B-90EI
Szczegółowy opis  8 Megabit (1 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory
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Producent  AMD [Advanced Micro Devices]
Strona internetowa  http://www.amd.com
Logo AMD - Advanced Micro Devices

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21525D6 October 12, 2006
Am29LV081B
9
D A TA SH EE T
Table 2.
Am29LV081B Sector Address Table
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 equipment
to automatically match a device to be programmed 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 VID (11.5 V to 12.5 V) on address pin A9.
Address pins A6, A1, and A0 must be as shown in Table
3. In addition, when verifying sector protection, the sec-
tor address must appear on the appropriate highest
order address bits (see Table 2). Table 3 shows the re-
maining address bits that are don’t care. When all nec-
essary bits have been set as required, 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 4. This method
does not require VID. See “Command Definitions” for
details on using the autoselect mode.
Table 3.
Am29LV081B Autoselect Codes (High Voltage Method)
L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
A19
A18
A17
A16
A15
A14
A13
Sector Size
Address Range
SA0
0
0
0
0
X
X
X
64 Kbytes
00000h-0FFFFh
SA1
0
0
0
1
X
X
X
64 Kbytes
10000h-1FFFFh
SA2
0
0
1
0
X
X
X
64 Kbytes
20000h-2FFFFh
SA3
0
0
1
1
X
X
X
64 Kbytes
30000h-3FFFFh
SA4
0
1
0
0
X
X
X
64 Kbytes
40000h-4FFFFh
SA5
0
1
0
1
X
X
X
64 Kbytes
50000h-5FFFFh
SA6
0
1
1
0
X
X
X
64 Kbytes
60000h-6FFFFh
SA7
0
1
1
1
X
X
X
64 Kbytes
70000h-7FFFFh
SA8
1
0
0
0
X
X
X
64 Kbytes
80000h-8FFFFh
SA9
1
0
0
1
X
X
X
64 Kbytes
90000h-9FFFFh
SA10
1
0
1
0
X
X
X
64 Kbytes
A0000h-AFFFFh
SA11
1
0
1
1
X
X
X
64 Kbytes
B0000h-BFFFFh
SA12
1
1
0
0
X
X
X
64 Kbytes
C0000h-CFFFFh
SA13
1
1
0
1
X
X
X
64 Kbytes
D0000h-DFFFFh
SA14
1
1
1
0
X
X
X
64 Kbytes
E0000h-EFFFFh
SA15
1
1
1
1
X
X
X
64 Kbytes
F0000h-FFFFFh
Description
CE#
OE#
WE#
A19
to
A13
A12
to
A10
A9
A8
to
A7
A6
A5
to
A2
A1
A0
DQ7
to
DQ0
Manufacturer ID: AMD
L
L
H
X
X
VID
X
L
X
L
L
01h
Device ID: Am29LV081B
L
L
H
X
X
VID
X
L
X
L
H
38h
Sector Protection Verification
L
L
H
SA
X
VID
X
L
X
H
L
01h
(protected)
00h
(unprotected)


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