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參數(shù)資料
| 型號： | AM29LV320DB40EF |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| 中文描述： | 32兆位（4個M × 8位/ 2米x 16位），3.0伏的CMOS只，引導(dǎo)扇區(qū)閃存 |
| 文件頁數(shù)： | 19/57頁 |
| 文件大?。?/td> | 636K |
| 代理商： | AM29LV320DB40EF |
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December 14, 2005
Am29LV320D
17
D A T A S H E E T
Sector/Sector Block Protection and
Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both pro-
gram and erase operations in previously protected
sectors. Sector protection/unprotection can be imple-
mented via two methods.
(Note: For the following discussion, the term “sector”
applies to both sectors and sector blocks. A sector
block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see
Table 7 on page 17 and Table 8 on page 17).
Table 7.
Top Boot Sector/Sector Block Addresses
for Protection/Unprotection
Table 8.
Addresses for Protection/Unprotection
Bottom Boot Sector/Sector Block
Sector Protection and unprotection requires V
ID
on the
RESET# pin only, and can be implemented either
in-system or via programming equipment.
Figure 2, on
page 19
shows the algorithms and
Figure 25, on page
47
shows the timing diagram. This method uses stan-
dard microprocessor bus cycle timing. For sector un-
protect, all unprotected sectors must first be protected
prior to the first sector unprotect write cycle.
The sector unprotect algorithm unprotects all sectors
in parallel. All previously protected sectors must be in-
dividually re-protected. To change data in protected
sectors efficiently, the temporary sector unprotect
function is available. See
“Temporary Sector Unpro-
tect” on page 18
.
The alternate method intended only for programming
equipment, and requires V
ID
on address pin A9 and
OE#. This method is compatible with programmer rou-
tines written for earlier 3.0 volt-only AMD flash de-
vices. For detailed information, contact an AMD
representative.
The device is shipped with all sectors unprotected.
AMD offers the option of programming and protecting
sectors at its factory prior to shipping the device
through AMD’s ExpressFlash Service. Contact an
AMD representative for details.
It is possible to determine whether a sector is pro-
tected or unprotected. See
“Autoselect Mode” on
page 16
for details.
Sector / Sector
Block
A20–A12
Sector/Sector Block Size
SA0-SA3
000000XXX,
000001XXX,
000010XXX
000011XXX
256 (4x64) Kbytes
SA4-SA7
0001XXXXX
256 (4x64) Kbytes
SA8-SA11
0010XXXXX
256 (4x64) Kbytes
SA12-SA15
0011XXXXX
256 (4x64) Kbytes
SA16-SA19
0100XXXXX
256 (4x64) Kbytes
SA20-SA23
0101XXXXX
256 (4x64) Kbytes
SA24-SA27
0110XXXXX
256 (4x64) Kbytes
SA28-SA31
0111XXXXX
256 (4x64) Kbytes
SA32-SA35
1000XXXXX
256 (4x64) Kbytes
SA36-SA39
1001XXXXX
256 (4x64) Kbytes
SA40-SA43
1010XXXXX
256 (4x64) Kbytes
SA44-SA47
1011XXXXX
256 (4x64) Kbytes
SA48-SA51
1100XXXXX
256 (4x64) Kbytes
SA52-SA55
1101XXXXX
256 (4x64) Kbytes
SA56-SA59
1110XXXXX
256 (4x64) Kbytes
SA60-SA62
111100XXX,
111101XXX,
111110XXX
192 (3x64) Kbytes
SA63
111111000
8 Kbytes
SA64
111111001
8 Kbytes
SA65
111111010
8 Kbytes
SA66
111111011
8 Kbytes
SA67
111111100
8 Kbytes
SA68
111111101
8 Kbytes
SA69
111111110
8 Kbytes
SA70
111111111
8 Kbytes
Sector / Sector
Block
A20–A12
Sector/Sector Block Size
SA70-SA67
111111XXX,
111110XXX,
111101XXX,
111100XXX
256 (4x64) Kbytes
SA66-SA63
1110XXXXX
256 (4x64) Kbytes
SA62-SA59
1101XXXXX
256 (4x64) Kbytes
SA58-SA55
1100XXXXX
256 (4x64) Kbytes
SA54-SA51
1011XXXXX
256 (4x64) Kbytes
SA50-SA47
1010XXXXX
256 (4x64) Kbytes
SA46-SA43
1001XXXXX
256 (4x64) Kbytes
SA42-SA39
1000XXXXX
256 (4x64) Kbytes
SA38-SA35
0111XXXXX
256 (4x64) Kbytes
SA34-SA31
0110XXXXX
256 (4x64) Kbytes
SA30-SA27
0101XXXXX
256 (4x64) Kbytes
SA26-SA23
0100XXXXX
256 (4x64) Kbytes
SA22–SA19
0011XXXXX
256 (4x64) Kbytes
SA18-SA15
0010XXXXX
256 (4x64) Kbytes
SA14-SA11
0001XXXXX
256 (4x64) Kbytes
SA10-SA8
000011XXX,
000010XXX,
000001XXX
192 (3x64) Kbytes
SA7
000000111
8 Kbytes
SA6
000000110
8 Kbytes
SA5
000000101
8 Kbytes
SA4
000000100
8 Kbytes
SA3
000000011
8 Kbytes
SA2
000000010
8 Kbytes
SA1
000000001
8 Kbytes
SA0
000000000
8 Kbytes
Sector / Sector
Block
A20–A12
Sector/Sector Block Size
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM29LV320DB40EI | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| AM29LV320DB40EV | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| AM29LV320DB40EY | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| AM29LV320DB40WMC | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory |
| AM29LV320DB40WMD | 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 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 |
|---|---|
| AM29LV320DB90EC | 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP |
| AM29LV320DB90ED | 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP |
| AM29LV320DB90EF | 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP |
| AM29LV320DB90EI | 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP |
| AM29LV320DB-90EI | 制造商:Advanced Micro Devices 功能描述:NOR Flash, 2M x 16, 48 Pin, Plastic, TSSOP |
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