- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362308 > AMD29DL164DT90EI EEPROM PDF資料下載
參數(shù)資料
| 型號： | AMD29DL164DT90EI |
| 元件分類： | EEPROM |
| 英文描述： | EEPROM |
| 中文描述： | EEPROM的 |
| 文件頁數(shù)： | 16/53頁 |
| 文件大?。?/td> | 1167K |
| 代理商： | AMD29DL164DT90EI |
第1頁第2頁第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頁當(dāng)前第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頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
16
Am29DL16xD
July 29, 2002
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
section for details.
Write Protect (WP#)
The Write Protect function provides a hardware
method of protecting certain boot sectors 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 the two
“outermost” 8 Kbyte boot sectors independently of
whether those sectors were protected or unprotected
using the method described in “Sector/Sector Block
Protection and Unprotection”. The two outermost 8
lowest addresses in a bottom-boot-configured device,
or the two sectors containing the highest addresses in
a top-boot-configured device.
If the system asserts V
IH
on the WP#/ACC pin, the de-
vice reverts to whether the two outermost 8 Kbyte boot
sectors were last set to be protected or unprotected.
That is, sector protection or unprotection for these two
sectors depends on whether they were last protected
or unprotected using the method described in “Sec-
tor/Sector Block Protection and Unprotection”.
Note that the WP#/ACC pin must not be left floating or
unconnected; inconsistent behavior of the device may
result.
Temporary Sector/Sector Block Unprotect
(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 Tables
8 and 9).
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RE-
SET# pin to V
ID
(8.5 V – 12.5 V). During this mode,
formerly protected sectors can be programmed or
erased by selecting the sector addresses. Once V
ID
is
removed from the RESET# pin, all the previously pro-
tected sectors are protected again. Figure 1 shows the
algorithm, and Figure 24 shows the timing diagrams,
for this feature.
Figure 1.
Temporary Sector Unprotect Operation
START
Perform Erase or
Program Operations
RESET# = V
IH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = V
ID
(Note 1)
Notes:
1. All protected sectors unprotected (If WP#/ACC = V
IL
,
outermost boot sectors will remain protected).
2. All previously protected sectors are protected once
again.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AMD29DL164DT90PCI | EEPROM |
| AMD29DL164DT90WCI | EEPROM |
| AMDK6 | AMD K6 - 3.3V 233MHz AMD K6 Processor Specifications |
| AMDM-13G | Delay Line |
| AMDM-13J | Delay Line |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AMD29DL164DT90PCI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| AMD29DL164DT90WCI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| AMD29F010B | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| AMD29F010B-120EC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
| AMD29F010B-120EE | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。