參數(shù)資料
型號(hào)： AM29LV640DL90RZIN
廠商： ADVANCED MICRO DEVICES INC
元件分類(lèi)： PROM
英文描述： Digital Hour Meter; Supply Voltage Max:115VAC; Digit/Alpha Height:0.5"; Display Technology:LED; No. of Digits/Alpha:4; Time Range Max:99s; Time Range Min:1s RoHS Compliant: Yes
中文描述： 4M X 16 FLASH 3V PROM, 90 ns, PDSO56
封裝： MO-180BA, SSOP-56
文件頁(yè)數(shù)： 13/57頁(yè)
文件大?。?/td> 1467K
代理商： AM29LV640DL90RZIN
September 20, 2002
Am29LV640D/Am29LV641D
19
Write Protect (WP#)
The Write Protect function provides a hardware
method of protecting the first or last sector without
using V
ID.
If the system asserts V
IL on the WP# pin, the device
disables program and erase functions in the first or
last sector independently of whether those sectors
were protected or unprotected using the method de-
Note that if WP# is at V
IL when the device is in the
standby mode, the maximum input load current is in-
creased. See the table in “DC Characteristics”.
If the system asserts V
IH on the WP# pin, the device
reverts to whether the first or last sector was previ-
ously set to be protected or unprotected using the
Temporary Sector Group Unprotect
(Note: In this device, a sector group consists of four adjacent
sectors that are protected or unprotected at the same time
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 (8.5 V – 12.5 V). 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
Figure 21 shows the timing diagrams, for this feature.
Figure 1.
Temporary Sector Group
Unprotect Operation
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 (If WP# = V
IL,
the first or last sector will remain protected).
2. All previously protected sector groups are protected
once again.
相關(guān)PDF資料
PDF描述
Am29LV641DL90RZIN Digital Hour Meter; Supply Voltage Max:120VAC; Digit/Alpha Height:0.5"; Display Technology:LED; No. of Digits/Alpha:4; Time Range Max:7Days RoHS Compliant: Yes
Am29LV400T-90RWAI 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
Am29LV400B-90RWAI 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
Am29LV400BB70RWAI 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
Am29LV400BT70RWAI 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
AM29LV640DU-90NI 制造商:Advanced Micro Devices 功能描述:
AM29LV640DU90REI 制造商:Spansion 功能描述:FLASH PARALLEL 3V/3.3V 64MBIT 4MX16 90NS 48TSOP - Trays
AM29LV640DU-90RWHIT 制造商:Advanced Micro Devices 功能描述:63-BALL FINE-PITCH BALL GRID ARRAY (FBGA) 0.80 MM PITCH, 11 X 12 MM PACKAGE (FBE063)
AM29LV640MB-90REI 制造商:Advanced Micro Devices 功能描述:
AM29LV640MH112REI 制造商:Advanced Micro Devices 功能描述:4M X 16 FLASH 3V PROM, 110 ns, PDSO56
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*