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參數(shù)資料
| 型號： | L640MB12RF |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| 中文描述： | 64兆位（4個M x 16位/八米× 8位）的MirrorBit⑩3.0伏，只引導扇區(qū)閃存 |
| 文件頁數(shù)： | 22/66頁 |
| 文件大?。?/td> | 836K |
| 代理商： | L640MB12RF |
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20
Am29LV640MT/B
26190C8 February1,2007
D A T A S H E E T
Sector Group Protection and
Unprotection
The hardware sector group protection feature disables
both program and erase operations in any sector
group. In this device, a sector group consists of four
adjacent sectors that are protected or unprotected at
the same time (see Tables
5
and
6
). The hardware
sector group unprotection feature re-enables both pro-
gram and erase operations in previously protected
sector groups. Sector group protection/unprotection
can be implemented via two methods.
Sector protection/unprotection requires V
ID
on the RE-
SET# pin only, and can be implemented either in-sys-
tem or via programming equipment.
Figure 2
shows
the algorithms and
Figure 24
shows the timing dia-
gram. This method uses standard microprocessor bus
cycle timing. For sector group unprotect, all unpro-
tected sector groups must first be protected prior to
the first sector group unprotect write cycle.
The device is shipped with all sector groups unpro-
tected. AMD offers the option of programming and pro-
tecting sector groups at its factory prior to shipping the
device through AMD’s ExpressFlash Service. Con-
tact an AMD representative for details.
It is possible to determine whether a sector group is
protected or unprotected. See
Autoselect Mode on
page 19
Table 5.
Am29LV640MT Top Boot
Sector Protection
Sector
A21–A12
Sector/
Sector Block Size
SA0-SA3
00000XXXXX
256 (4x64) Kbytes
SA4-SA7
00001XXXXX
256 (4x64) Kbytes
SA8-SA11
00010XXXXX
256 (4x64) Kbytes
SA12-SA15
00011XXXXX
256 (4x64) Kbytes
SA16-SA19
00100XXXXX
256 (4x64) Kbytes
SA20-SA23
00101XXXXX
256 (4x64) Kbytes
SA24-SA27
00110XXXXX
256 (4x64) Kbytes
SA28-SA31
00111XXXXX
256 (4x64) Kbytes
SA32-SA35
01000XXXXX
256 (4x64) Kbytes
SA36-SA39
01001XXXXX
256 (4x64) Kbytes
SA40-SA43
01010XXXXX
256 (4x64) Kbytes
SA44-SA47
01011XXXXX
256 (4x64) Kbytes
SA48-SA51
01100XXXXX
256 (4x64) Kbytes
SA52-SA55
01101XXXXX
256 (4x64) Kbytes
SA56-SA59
01110XXXXX
256 (4x64) Kbytes
SA60-SA63
01111XXXXX
256 (4x64) Kbytes
SA64-SA67
10000XXXXX
256 (4x64) Kbytes
SA68-SA71
10001XXXXX
256 (4x64) Kbytes
SA72-SA75
10010XXXXX
256 (4x64) Kbytes
SA76-SA79
10011XXXXX
256 (4x64) Kbytes
SA80-SA83
10100XXXXX
256 (4x64) Kbytes
SA84-SA87
10101XXXXX
256 (4x64) Kbytes
SA88-SA91
10110XXXXX
256 (4x64) Kbytes
SA92-SA95
10111XXXXX
256 (4x64) Kbytes
SA96-SA99
11000XXXXX
256 (4x64) Kbytes
SA100-SA103
11001XXXXX
256 (4x64) Kbytes
SA104-SA107
11010XXXXX
256 (4x64) Kbytes
SA108-SA111
11011XXXXX
256 (4x64) Kbytes
SA112-SA115
11100XXXXX
256 (4x64) Kbytes
SA116-SA119
11101XXXXX
256 (4x64) Kbytes
SA120-SA123
11110XXXXX
256 (4x64) Kbytes
SA124-SA126
1111100XXX
1111101XXX
1111110XXX
192 (3x64) Kbytes
SA127
1111111000
8 Kbytes
SA128
1111111001
8 Kbytes
SA129
1111111010
8 Kbytes
SA130
1111111011
8 Kbytes
SA131
1111111100
8 Kbytes
SA132
1111111101
8 Kbytes
SA133
1111111110
8 Kbytes
SA134
1111111111
8 Kbytes
Table 6.
Am29LV640MB Bottom Boot
Sector Protection
Sector
A21–A12
Sector/
Sector Block Size
SA0
0000000000
8 Kbytes
SA1
0000000001
8 Kbytes
SA2
0000000010
8 Kbytes
SA3
0000000011
8 Kbytes
SA4
0000000100
8 Kbytes
SA5
0000000101
8 Kbytes
SA6
0000000110
8 Kbytes
SA7
0000000111
8 Kbytes
SA8–SA10
0000001XXX,
0000010XXX,
0000011XXX,
192 (3x64) Kbytes
SA11–SA14
00001XXXXX
256 (4x64) Kbytes
SA15–SA18
00010XXXXX
256 (4x64) Kbytes
SA19–SA22
00011XXXXX
256 (4x64) Kbytes
SA23–SA26
00100XXXXX
256 (4x64) Kbytes
SA27-SA30
00101XXXXX
256 (4x64) Kbytes
SA31-SA34
00110XXXXX
256 (4x64) Kbytes
SA35-SA38
00111XXXXX
256 (4x64) Kbytes
SA39-SA42
01000XXXXX
256 (4x64) Kbytes
SA43-SA46
01001XXXXX
256 (4x64) Kbytes
SA47-SA50
01010XXXXX
256 (4x64) Kbytes
SA51-SA54
01011XXXXX
256 (4x64) Kbytes
Sector
A21–A12
Sector/
Sector Block Size
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L640MB12RI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| L640MB12VF | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| L640MB12VI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| L640MB90NF | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| L640MB90NI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L640MB12RI | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| L640MB12VF | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| L640MB12VI | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| L640MB90NF | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| L640MB90NI | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
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