- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄223348 > AM29F400BB-70SE (ADVANCED MICRO DEVICES INC) 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory PDF資料下載
參數(shù)資料
| 型號： | AM29F400BB-70SE |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | PROM |
| 英文描述： | 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory |
| 中文描述： | 256K X 16 FLASH 5V PROM, 70 ns, PDSO44 |
| 封裝： | MO-180AA, SOP-44 |
| 文件頁數(shù)： | 3/41頁 |
| 文件大小： | 919K |
| 代理商： | AM29F400BB-70SE |
第1頁第2頁當(dāng)前第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁
Am29F400B
11
Table 4.
Am29F400B Autoselect Codes (High Voltage Method)
L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
Sector Protection/Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both
program and erase operations in previously protected
sectors.
Sector protection/unprotection must be implemented
using programmin g equ ipment. The procedure
requires a high voltage (VID) on address pin A9 and
OE#. Details on this method are provided in a supple-
ment, publication number 20185. Contact an AMD
representative to obtain a copy of this document.
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 protected
or unprotected. See “Autoselect Mode” for details.
Temporary Sector Unprotect
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the
RESET# pin to VID. During this mode, formerly pro-
tected sectors can be programmed or erased by
selecting the sector addresses. Once VID is removed
from the RESET# pin, all the previously protected
sectors are protected again. Figure 1 shows the algo-
rithm, and Figure 18 shows the timing diagrams, for this
feature.
Figure 1.
Temporary Sector Unprotect Operation
Description
Mode
CE#
OE#
WE#
A17
to
A12
A11
to
A10
A9
A8
to
A7
A6
A5
to
A2
A1
A0
DQ8
to
DQ15
DQ7
to
DQ0
Manufacturer ID: AMD
L
H
X
VID
XLX
L
X
01h
Device ID:
Am29F400B
(Top Boot Block)
Word
L
H
XX
VID
XLX
L
H
22h
23h
Byte
L
H
X
23h
Device ID:
Am29F400B
(Bottom Boot
Block)
Word
L
H
XX
VID
XLX
L
H
22h
ABh
Byte
L
H
X
ABh
Sector Protection Verification
L
H
SA
X
VID
XLX
H
L
X
01h
(protected)
X
00h
(unprotected)
START
Perform Erase or
Program Operations
RESET# = VIH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = VID
(Note 1)
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once
again.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM29F400BB-70EEB | 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory |
| AM29LL800T-200EBB | 1M X 8 FLASH 3V PROM, 200 ns, PDSO48 |
| AM29LV004B-90FE | 512K X 8 FLASH 3V PROM, 90 ns, PDSO40 |
| AM29LV004B-90ED | 512K X 8 FLASH 3V PROM, 90 ns, PDSO40 |
| Am29LV400B-90RWACB | 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM29F400BB-70SF | 功能描述:閃存 4M (512KX8/256Kx16) Parallel NOR Fl 5V RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結(jié)構(gòu):256 K x 8 定時類型: 接口類型:SPI 訪問時間: 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 |
| AM29F400BB-70SF\\T | 制造商:Spansion 功能描述: |
| AM29F400BB-70SF\T | 制造商:Spansion 功能描述: |
| AM29F400BB-90ED | 制造商:Spansion 功能描述:FLASH BOTTOM BLOCK 4MB SMD 29F400 |
| AM29F400BB-90EF | 功能描述:閃存 4M (512KX8/256Kx16) Parallel NOR Fl 5V RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結(jié)構(gòu):256 K x 8 定時類型: 接口類型:SPI 訪問時間: 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。