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參數(shù)資料
| 型號： | AM29LV065DU90RFI |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | PROM |
| 英文描述： | 64 Megabit (8 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileIOTM Control |
| 中文描述： | 8M X 8 FLASH 3V PROM, 90 ns, PDSO48 |
| 封裝： | REVERSE, MO-142DD, TSOP-48 |
| 文件頁數(shù)： | 17/52頁 |
| 文件大?。?/td> | 1184K |
| 代理商： | AM29LV065DU90RFI |
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16
Am29LV065D
January 10, 2002
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 and unprotection requires V
ID
on the
RESET# pin only, and can be implemented either
in-system or via programming equipment.
Figure 2
shows the algorithms and
Figure 22
shows the timing
diagram. 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
protecting sector groups 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 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 256 Kbytes in size.
Sector Group
A22
–
A18
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
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| AM29LV065DU90RFIN | 64 Megabit (8 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileIOTM Control |
| AM29LV065DU90RWHI | 64 Megabit (8 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileIOTM Control |
| AM29LV065D | 64 Megabit (8 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileIOTM Control |
| AM29LV065DU120REI | 64 Megabit (8 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileIOTM Control |
| AM29LV065DU120REIN | 64 Megabit (8 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileIOTM Control |
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| AM29LV081B-70EC | 制造商:Advanced Micro Devices 功能描述: 制造商:Atmel Corporation 功能描述: |
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