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參數(shù)資料
| 型號(hào)： | AM29DL642G |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only Simultaneous Read/Write Flash Memo |
| 中文描述： | 128兆位（8米× 16位）的CMOS 3.0伏，只有同時(shí)讀/寫閃存?zhèn)渫?/td> |
| 文件頁數(shù)： | 19/54頁 |
| 文件大?。?/td> | 828K |
| 代理商： | AM29DL642G |
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June 10, 2005
Am29DL642G
17
P R E L I M I N A R Y
Table 4.
Bank Address
Table 5.
SecSi
TM
Sector Addresses
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 pro-
grammed 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
on address pin A9. Address pins
must be as shown in Table 6. In addition, when verify-
ing sector protection, the sector address must appear
on the appropriate highest order address bits (see
Table 2). Table 6 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 corresponding identifier code on DQ7–DQ0.
However, the autoselect codes can also be accessed
in-system through the command register, for instances
when the Am29DL642G is erased or programmed in a
system without access to high voltage on the A9 pin.
The command sequence is illustrated in Table 13.
Note that if a Bank Address (BA) on address bits A21,
A20, and A19 is asserted during the third write cycle of
the autoselect command, the host system can read
autoselect data from that bank and then immediately
read array data from the other bank, without exiting the
autoselect mode.
Bank 4
SA119
SA120
SA121
SA122
SA123
SA124
SA125
SA126
SA127
SA128
SA129
SA130
SA131
SA132
SA133
SA134
SA135
SA136
SA137
SA138
SA139
SA140
SA141
1110000xxx
1110001xxx
1110010xxx
1110011xxx
1110100xxx
1110101xxx
1110110xxx
1110111xxx
1111000xxx
1111001xxx
1111010xxx
1111100xxx
1111101xxx
1111110xxx
1111111000
1111111001
1111111010
1111111011
1111111100
1111111101
1111111110
1111111111
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
4
4
4
4
4
4
4
4
380000h–387FFFh
388000h–38FFFFh
390000h–397FFFh
398000h–39FFFFh
3A0000h–3A7FFFh
3A8000h–3AFFFFh
3B0000h–3B7FFFh
3B8000h–3BFFFFh
3C0000h–3C7FFFh
3C8000h–3CFFFFh
3D0000h–3D7FFFh
3D8000h–3DFFFFh
3E0000h–3E7FFFh
3E8000h–3EFFFFh
3F0000h–3F7FFFh
3F8000h–3F8FFFh
3F9000h–3F9FFFh
3FA000h–3FAFFFh
3FB000h–3FBFFFh
3FC000h–3FCFFFh
3FD000h–3FDFFFh
3FE000h–3FEFFFh
3FF000h–3FFFFFh
Table 3.
Am29DL642G Sector Architecture for CE2# (Continued)
Bank
Sector
Sector Address
A21–A12
Sector Size
(Kwords)
(x16)
Address Range
Bank
1
2
3
4
A21–A19
000
001, 010, 011
100, 101, 110
111
Device
Am29DL642G
Sector Size
128 words
(x16)
Address Range
00000h–0007Fh
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