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參數(shù)資料
| 型號(hào)： | AM29F080B-70ED |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 8 Megabit (1 M x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| 中文描述： | 8兆位（1米× 8位）的CMOS 5.0伏只，統(tǒng)一部門快閃記憶體 |
| 文件頁數(shù)： | 13/39頁 |
| 文件大小： | 517K |
| 代理商： | AM29F080B-70ED |
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November1,2006 21503G5
Am29F080B
11
D AT A S H E E T
Sector Group Protection/Unprotection
The hardware group sector protection feature dis-
ables both program and erase operations in any sec-
tor group. Each sector group consists of two adjacent
sectors. Table 3 shows how the sectors are grouped,
and the address range that each sector group con-
tains. The hardware sector group unprotection fea-
ture re-enables both program and erase operations in
previously protected sector groups.
Sector group protection/unprotection must be imple-
mented using programming equipment. The procedure
requires a high voltage (V
ID
) on address pin A9 and the
control pins. Details on this method are provided in a
supplement, listed in publication number 19945. Con-
tact an AMD representative to obtain a copy of the ap-
propriate document.
The device is shipped with all sectors unprotected.
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 “Autoselect Mode” for
details.
Table 3.
Sector Group Addresses
Temporary Sector Group Unprotect
This feature allows temporary unprotection of previ-
ously protected sector groups to change data in-sys-
tem. The Sector Group Unprotect mode is activated
by setting the RESET# pin to V
ID
. During this mode,
formerly protected sector groups can be programmed
or erased by selecting the sector group addresses.
Once V
ID
is removed from the RESET# pin, all the
previously protected sector groups are
protected again. Figure 1 shows the algorithm, and
the Temporary Sector Group Unprotect diagram
shows the timing waveforms, for this feature.
Figure 1.
Temporary Sector Group Unprotect
Operation
Sector
Group
A19
A18
A17
Sectors
SA0
–
SA1
SA2
–
SA3
SA4
–
SA5
SA6
–
SA7
SA8
–
SA9
SA10
–
SA11
SA12
–
SA13
SA14
–
SA15
SGA0
0
0
0
SGA1
0
0
1
SGA2
0
1
0
SGA3
0
1
1
SGA4
1
0
0
SGA5
1
0
1
SGA6
1
1
0
SGA7
1
1
1
START
Perform Erase or
Program Operations
RESET# = V
IH
Temporary Sector Group
Unprotect
Completed (Note 2)
RESET# = V
ID
(Note 1)
Notes:
1. All protected sector groups unprotected.
2. All previously protected sector groups are protected
once again.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM29F080B-70EE | 8 Megabit (1 M x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| AM29F080B-70EF | 8 Megabit (1 M x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| AM29F080B-70EK | 8 Megabit (1 M x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| AM29F080B-70SD | 8 Megabit (1 M x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| AM29F080B-70SE | 8 Megabit (1 M x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM29F080B-70EF | 功能描述:閃存 8M (1MX8) 70ns 5v Parallel NOR 閃存 RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲(chǔ)類型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問時(shí)間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| AM29F080B-70SF | 制造商:Spansion 功能描述:NOR Flash Parallel 5V 8Mbit 1M x 8bit 70ns 44-Pin SO |
| AM29F080B-75EF | 制造商:Spansion 功能描述:8 MEGABIT 1 M X 8-BIT CMOS 5.0 VOLT-ONLY, UNIFORM SECTOR FLASH MEMORY |
| AM29F080B-75EI | 制造商:Spansion 功能描述:IC,EEPROM,NOR FLASH,1MX8,CMOS,TSSOP,40PIN,PLASTIC |
| AM29F080B-90EC | 制造商:Advanced Micro Devices 功能描述: 制造商:Spansion 功能描述:IC, FLASH MEM, 8MBIT, 90NS, 40-TSOP, Memory Type:Flash - NOR, Memory Size:8Mbit, |
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