參數(shù)資料
型號(hào)： M750000008
廠商： Spansion Inc.
英文描述： 128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory
中文描述： 128兆位（8米× 16位），3.0伏的CMOS只，同步讀/寫閃存
文件頁(yè)數(shù)： 89/136頁(yè)
文件大?。?/td> 1250K
代理商： M750000008
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February 5, 2004
Am75PDL191CHH/Am75PDL193CHH
87
A D V A N C E I N F O R M A T I O N
Sector/Sector Block Protection and
Unprotection
(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
10).
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.
Table 5.
Am29DL640H Boot Sector/Sector Block
Addresses for Protection/Unprotection
Sector protection/sector unprotection requires V
ID
on
the RESET# pin only, and can be implemented either
in-system or via programming equipment. Figure 1
shows the algorithms and Figure 24 shows the timing
diagram. For sector unprotect, all unprotected sectors
must first be protected prior to the first sector unpro-
tect write cycle. Note that the sector unprotect algo-
rithm unprotects all sectors in parallel. All previously
protected sectors must be individually re-protected.To
change data in protected sectors efficiently, the tem-
porary sector unprotect function is available. See
“Temporary Sector Unprotect”.
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 the Autoselect Mode sec-
tion for details.
Write Protect (WP#)
The Write Protect function provides a hardware
method of protecting without using V
ID
. This function is
one of two provided by the WP#/ACC pin.
If the system asserts V
IL
on the WP#/ACC pin, the de-
vice disables program and erase functions in sectors
0, 1, 140, and 141, independently of whether those
sectors were protected or unprotected using the
method described in “Sector/Sector Block Protection
and Unprotection”.
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
SA55–SA58
01100XXXXX
256 (4x64) Kbytes
SA59–SA62
01101XXXXX
256 (4x64) Kbytes
SA63–SA66
01110XXXXX
256 (4x64) Kbytes
SA67–SA70
01111XXXXX
256 (4x64) Kbytes
SA71–SA74
10000XXXXX
256 (4x64) Kbytes
SA75–SA78
10001XXXXX
256 (4x64) Kbytes
SA79–SA82
10010XXXXX
256 (4x64) Kbytes
SA83–SA86
10011XXXXX
256 (4x64) Kbytes
SA87–SA90
10100XXXXX
256 (4x64) Kbytes
SA91–SA94
10101XXXXX
256 (4x64) Kbytes
SA95–SA98
10110XXXXX
256 (4x64) Kbytes
SA99–SA102
10111XXXXX
256 (4x64) Kbytes
SA103–SA106
11000XXXXX
256 (4x64) Kbytes
SA107–SA110
11001XXXXX
256 (4x64) Kbytes
SA111–SA114
11010XXXXX
256 (4x64) Kbytes
SA115–SA118
11011XXXXX
256 (4x64) Kbytes
SA119–SA122
11100XXXXX
256 (4x64) Kbytes
SA123–SA126
11101XXXXX
256 (4x64) Kbytes
SA127–SA130
11110XXXXX
256 (4x64) Kbytes
SA131–SA133
1111100XXX,
1111101XXX,
1111110XXX
192 (3x64) Kbytes
SA134
1111111000
8 Kbytes
SA135
1111111001
8 Kbytes
SA136
1111111010
8 Kbytes
SA137
1111111011
8 Kbytes
SA138
1111111100
8 Kbytes
SA139
1111111101
8 Kbytes
SA140
1111111101
8 Kbytes
SA141
1111111111
8 Kbytes
Sector
A21–A12
Sector/
Sector Block Size
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
M750000009 制造商:SPANSION 制造商全稱:SPANSION 功能描述:128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory
M750-1/2B 制造商:Thomas & Betts 功能描述:SIDE BEAM BRACKET
M75010 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PHOTOELECTRIC SMOKE DETECTOR WITH INTERCONNECT
M75012 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PHOTOELECTRIC SMOKE DETECTOR WITH INTERCONNECT
M75018 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IONIZATION SMOKE DETECTOR WITH INTERCONNECT
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