參數(shù)資料
型號(hào)： AM29LV004T-120EC
廠商： ADVANCED MICRO DEVICES INC
元件分類： PROM
英文描述： 4 Megabit (512 K x 8-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
中文描述： 512K X 8 FLASH 3V PROM, 120 ns, PDSO40
封裝： TSOP-40
文件頁(yè)數(shù)： 9/36頁(yè)
文件大小： 455K
代理商： AM29LV004T-120EC
Am29LV004
9
P R E L I M I N A R Y
Table 2.
Am29LV004T Top Boot Block Sector Address Table
Table 3.
Am29LV004B Bottom Boot Block 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
4. In addition, when verifying sector protection, the sec-
tor 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 program-
ming equipment may then read the corresponding iden-
tifier 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 V
ID
. See “Command Definitions” for
details on using the autoselect mode.
Sector
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
SA8
SA9
SA10
A18
0
0
0
0
1
1
1
1
1
1
1
A17
0
0
1
1
0
0
1
1
1
1
1
A16
0
1
0
1
0
1
0
1
1
1
1
A15
X
X
X
X
X
X
X
0
1
1
1
A14
X
X
X
X
X
X
X
X
0
0
1
A13
X
X
X
X
X
X
X
X
0
1
X
Sector Size
(Kbytes)
64
64
64
64
64
64
64
32
8
8
16
Address Range
(in hexadecimal)
00000h-0FFFFh
10000h-1FFFFh
20000h-2FFFFh
30000h-3FFFFh
40000h-4FFFFh
50000h-5FFFFh
60000h-6FFFFh
70000h-77FFFh
78000h-79FFFh
7A000h-7BFFFh
7C000h-7FFFFh
Sector
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
SA8
SA9
SA10
A18
0
0
0
0
0
0
0
1
1
1
1
A17
0
0
0
0
0
1
1
0
0
1
1
A16
0
0
0
0
1
0
1
0
1
0
1
A15
0
0
0
1
X
X
X
X
X
X
X
A14
0
1
1
X
X
X
X
X
X
X
X
A13
X
0
1
X
X
X
X
X
X
X
X
Sector Size
(Kbytes)
16
8
8
32
64
64
64
64
64
64
64
Address Range
(in hexadecimal)
00000h-03FFFh
04000h-05FFFh
06000h-07FFFh
08000h-0FFFFh
10000h-1FFFFh
20000h-2FFFFh
30000h-3FFFFh
40000h-4FFFFh
50000h-5FFFFh
60000h-6FFFFh
70000h-7FFFFh
相關(guān)PDF資料
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