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参数资料
| 型号： | AM29LV640MU40PCI |
| 厂商： | Advanced Micro Devices, Inc. |
| 元件分类： | FLASH |
| 英文描述： | 64 Megabit (4 M x 16-Bit) MirrorBita?? 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/Oa?? Control |
| 中文描述： | 64Mb(4个M x 16位)的MirrorBit，3V，统一扇区闪存并有Versatile输入/输出控制 |
| 文件页数： | 18/59页 |
| 文件大小： | 699K |
| 代理商： | AM29LV640MU40PCI |
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16
Am29LV640MU
25301C5 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
Table 4
). The hardware sector
group unprotection feature re-enables both program
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 23 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 the
Autoselect Mode
section for details.
Table 4.
Sector Group Protection/Unprotection
Address Table
Note:
All sector groups are 128 Kwords in size.
Sector Group
A21–A17
SA0–SA3
00000
SA4–SA7
00001
SA8–SA11
00010
SA12–SA15
00011
SA16–SA19
00100
SA20–SA23
00101
SA24–SA27
00110
SA28–SA31
00111
SA32–SA35
01000
SA36–SA39
01001
SA40–SA43
01010
SA44–SA47
01011
SA48–SA51
01100
SA52–SA55
01101
SA56–SA59
01110
SA60–SA63
01111
SA64–SA67
10000
SA68–SA71
10001
SA72–SA75
10010
SA76–SA79
10011
SA80–SA83
10100
SA84–SA87
10101
SA88–SA91
10110
SA92–SA95
10111
SA96–SA99
11000
SA100–SA103
11001
SA104–SA107
11010
SA108–SA111
11011
SA112–SA115
11100
SA116–SA119
11101
SA120–SA123
11110
SA124–SA127
11111
相关PDF资料 |
PDF描述 |
|---|---|
| AM29LV640MU40WHI | 64 Megabit (4 M x 16-Bit) MirrorBita?? 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/Oa?? Control |
| AM29LV640MU90PCI | 64 Megabit (4 M x 16-Bit) MirrorBita?? 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/Oa?? Control |
| AM29LV640MU90RPCI | 64 Megabit (4 M x 16-Bit) MirrorBita?? 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/Oa?? Control |
| AM29LV640MU90RWHI | 64 Megabit (4 M x 16-Bit) MirrorBita?? 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/Oa?? Control |
| AM29LV640MU90WHI | 64 Megabit (4 M x 16-Bit) MirrorBita?? 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/Oa?? Control |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AM29LV640MU90NI | 制造商:Advanced Micro Devices 功能描述: |
| AM29LV640MU90RPC1 | 制造商:Advanced Micro Devices 功能描述: |
| AM29LV640MU90RPCI | 制造商:Advanced Micro Devices 功能描述: |
| AM29LV641DH120REF | 制造商:Spansion 功能描述:Flash Memory IC |
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