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AM29LV002BT-55REF Datenblatt(PDF) 12 Page - Advanced Micro Devices

Teilenummer AM29LV002BT-55REF
Bauteilbeschribung  2 Megabit (256 K x 8-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
PDF  41 Pages
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Hersteller  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM29LV002BT-55REF Datenblatt(HTML) 12 Page - Advanced Micro Devices

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10
Am29LV002B
21520D5 October 11, 2006
D A TA SH EET
Table 2.
Am29LV002BT Top Boot Block Sector Address Table
Table 3.
Am29LV002BB Bottom Boot Block Sector Address Table
Autoselect Mode
The autoselect mode provides manufacturer and
device 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 4. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Tables 2 and 3). Table
4 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 5. This method
does not require VID. See “Command Definitions” for
details on using the autoselect mode.
Table 4.
Am29LV002B Autoselect Codes (High Voltage Method)
L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
Sector
A17
A16
A15
A14
A13
Sector Size
(Kbytes)
Address Range
(in hexadecimal)
SA0
0
0
X
X
X
64
00000h-0FFFFh
SA1
0
1
X
X
X
64
10000h-1FFFFh
SA2
1
0
X
X
X
64
20000h-2FFFFh
SA3
1
1
0
X
X
32
30000h-37FFFh
SA4
1
1
1
0
0
8
38000h-39FFFh
SA5
1
1
1
0
1
8
3A000h-3BFFFh
SA6
11
11
X
16
3C000h-3FFFFh
Sector
A17
A16
A15
A14
A13
Sector Size
(Kbytes)
Address Range
(in hexadecimal)
SA0
0
0
0
0
X
16
00000h-03FFFh
SA1
0
0
0
1
0
8
04000h-05FFFh
SA2
0
0
0
1
1
8
06000h-07FFFh
SA3
0
0
1
X
X
32
08000h-0FFFFh
SA4
0
1
X
X
X
64
10000h-1FFFFh
SA5
1
0
X
X
X
64
20000h-2FFFFh
SA6
1
1
X
X
X
64
30000h-3FFFFh
Description
CE#
OE#
WE#
A17
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
XLXL
L
01h
Device ID: Am29LV002BT
(Top Boot Block)
LL
H
X
X
VID
XLXL
H
40h
Device ID: Am29LV002BB
(Bottom Boot Block)
LL
H
X
X
VID
XLXL
H
C2h
Sector Protection Verification
L
L
H
SA
X
VID
XLX
H
L
01h
(protected)
00h
(unprotected)



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