參數(shù)資料
型號(hào): AM29LV081B120EF
廠商: Advanced Micro Devices, Inc.
英文描述: 8 Megabit (1 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory
中文描述: 8兆位(1米× 8位)的CMOS 3.0伏特,只有統(tǒng)一部門閃存
文件頁數(shù): 11/40頁
文件大?。?/td> 438K
代理商: AM29LV081B120EF
21525D6
October 12, 2006
Am29LV081B
9
D AT A S H E E 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 V
ID
(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 V
ID
. See “Command Definitions” for
details on using the autoselect mode.
Table 3. Am29LV081B Autoselect Codes (High Voltage Method)
L = Logic Low = V
IL
, H = Logic High = V
IH
, 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
V
ID
X
L
X
L
L
01h
Device ID: Am29LV081B
L
L
H
X
X
V
ID
X
L
X
L
H
38h
Sector Protection Verification
L
L
H
SA
X
V
ID
X
L
X
H
L
01h
(protected)
00h
(unprotected)
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