參數(shù)資料
型號(hào)： Am29LV320DT90ED
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(gè)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(yè)數(shù)： 17/55頁(yè)
文件大小： 1258K
代理商： AM29LV320DT90ED
November 15, 2004
Am29LV320D
17
Sector/Sector Block Protection and
Unprotection
The hardware sector protection feature disables
both program and erase operations in any sec-
tor. The hardware sector unprotection feature
re-enables both program and erase operations
in previously protected sectors. Sector protec-
tion/unprotection can be implemented 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 unpro-
tected at the same time (see
Table 7, on
page 17
and
Table 8, on page 17
).
Table 7.
Addresses for Protection/Unprotection
Top Boot Sector/Sector Block
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 imple-
mented either in-system or via programming
equipment.
Figure 2, on page 19
shows the al-
gorithms and
Figure 25, on page 47
shows the
timing diagram. This method uses standard mi-
croprocessor 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 sec-
tors must be individually re-protected. To
change data in protected sectors efficiently, the
temporary sector unprotect function is avail-
able. See
“Temporary Sector Unprotect” on
page 18
.
The alternate method intended only for pro-
gramming equipment, and requires V
ID
on ad-
dress pin A9 and OE#. This method is
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
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM29LV320DT90EI 制造商:Advanced Micro Devices 功能描述:
AM29LV320DT90WMI 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 FBGA 制造商:Advanced Micro Devices 功能描述:NOR Flash, 2M x 16, 48 Pin, Plastic, BGA
AM29LV320MB100EI 制造商:Advanced Micro Devices 功能描述:
AM29LV320MB90RPCI 制造商:Spansion 功能描述:FLASH PARALLEL 3V/3.3V 32MBIT 4MX8/2MX16 90NS 64BGA - Trays
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