USB接口控制器参考设计,xilinx提供VHDL代码 usb xilinx vhdl ; This program is free software; you can redistribute it and/Or modify ; it under the terms of the GNU General Public License as published by ; the Free Software Foundation; either version 2 of the License, Or ; (at your option) any later version. ; ; This program is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY Or FITNESS FOr A PARTICULAR PURPOSE. See the ; GNU General Public License fOr mOre details. ; ; You should have received a copy of the GNU General Public License ; along with this program; if not, write to the Free Software ; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
上传时间: 2013-10-12
上传用户:windgate
UART 4 UART参考设计,Xilinx提供VHDL代码 uart_vhdl This zip file contains the following folders: \vhdl_source -- Source VHDL files: uart.vhd - top level file txmit.vhd - transmit pOrtion of uart rcvr.vhd - - receive pOrtion of uart \vhdl_testfixture -- VHDL Testbench files. This files only include the testbench behaviOr, they do not instantiate the DUT. This can easily be done in a top-level VHDL file Or a schematic. This folder contains the following files: txmit_tb.vhd -- Test bench fOr txmit.vhd. rcvr_tf.vhd -- Test bench fOr rcvr.vhd.
上传时间: 2013-11-07
上传用户:jasson5678
特点 最高輸入頻率 10KHz 显示范围0-9999(一段设定)0至999999累积量 计数速度 50/10000脈波/秒可选择 输入脈波具有预设刻度功能 累积量同步(批量)或非同步(批次)计数可选择 数位化指拨设定操作简易 计数暂时停止功能 1组报警功能 2:主要規格 脈波輸入型式: Jump-pin selectable current sourcing(NPN) Or current sinking (PNP) 脉波触发电位: HI bias (CMOS) (VIH=7.5V, VIL=5.5V) LO bias (TTL) (VIH=3.7V, VIL=2.0V) 最高输入频率: <10KHz (up,down,up/down mode) 输出动作时间 : 0.1 to 99.9 second adjustable 输出复归方式: Manual(N) Or automatic (R Or C) can be modif 继电器容量: AC 250V-5A, DC 30V-7A 显示值范围: 0-9999(PV,SV) 0-999999(TV) 显示幕: Red high efficiency LEDs high 7.0mm (.276")(PV,SV) Red high efficiency LEDs high 9.2mm (.36")(TV) 参数设定方式: Touch switches 感应器电源: 12VDC +/-3%(<60mA) 记忆方式: Non-volatile E2PROM memOry 绝缘耐压能力: 2KVac/1 min. (input/output/power) 1600Vdc (input/output) 使用环境条件: 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
上传时间: 2013-10-24
上传用户:wvbxj
特点 显示值范围-199999至999999位數 最高輸入頻率 5KHz 90度相位差加減算具有提高解析度4倍功能 输入脈波具有预设刻度功能 定位基准值可任意設定 比較磁滯值可任意設定 数位化指拨设定操作简易 3组继电器输出功能 2:主要規格 脈波輸入型式: Jump-pin selectable current sourcing(NPN) Or current sinking (PNP) 脉波触发电位: HI bias (CMOS) (VIH=7.5V, VIL=5.5V) LO bias (TTL) (VIH=3.7V, VIL=2.0V) 最高输入频率: <5KHz 定位置范围: -199999 to 999999 second adjustabl 比较磁滞范围: 0 to 9999 adjustable 继电器容量: AC 250V-5A, DC 30V-7A 显示值范围: -199999 to 999999 显示幕: Red high efficiency LEDs high 9.2mm (.36") 参数设定方式: Touch switches 感应器电源: 12VDC +/-3%(<60mA) 记忆方式: Non-volatile E2PROM memOry 绝缘耐压能力: 2KVac/1 min. (input/output/power) 1600Vdc (input/output) 使用环境条件: 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
上传时间: 2014-12-03
上传用户:xjz632
特点 精确度0.25%滿刻度 ±1位數 输入配线系统可任意选择 CT比可任意设定 具有异常电流值与异常次数记录保留功能 电流过高或过低检测可任意设定 报警继电器复归方式可任意設定 尺寸小,穩定性高 2.主要規格 辅助电源: AC110V&220V ±20%(50 Or 60Hz) AC220V&440V ±20%(50 Or 60Hz)(optional) 精确度: 0.25% F.S. ±1 digit 输入负载: <0.2VA (Current) 最大过载能力 : Current related input: 2 x rated continuous 10 x rated 30 sec. 25 x rated 3sec. 50 x rated 1 sec. 输入电流范围: AC0-5A (10-1000Hz) CT ratio : 1-2000 adjustable 启动延迟动作时间: 0-99.9 second adjustable 继电器延迟动作时间: 0-99.9 second adjustable 继电器复归方式: Manual (N) / latch(L) can be modified 继电器磁滞范围: 0-999 digit adjustable 继电器动作方向: HI /LO/GO/HL can be modified 继电器容量: AC 250V-5A, DC 30V-7A 过载显示: "doFL" 温度系数: 50ppm/℃ (0-50℃) 显示幕: Red high efficiency LEDs high 14.22mm(.56")(PV) Red high efficiency LEDs high 14.22mm(.276")(NO) 参数设定方式: Touch switches 记忆型式 : Non-volatile E2PROM memOry 绝缘耐压能力: 2KVac/1 min. (input/output/power) 1600Vdc(input/output 使用环境条件 : 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
上传时间: 2013-10-14
上传用户:wanghui2438
特点 最高輸入頻率 10KHz 计数速度 50/10000脈波/秒可选择 四种输入模式可选择(加算,減算,加減算,90度相位差加減算) 90度相位差加減算具有提高解析度4倍功能 输入脈波具有预设刻度功能 计数暂时停止功能 3组报警功能 15BIT类比输出功能 数位RS-485界面 2:主要規格 脈波輸入型式: Jump-pin selectable current sourcing(NPN) Or current sinking (PNP) 脉波触发电位: HI bias (CMOS) (VIH=7.5V, VIL=5.5V) LO bias (TTL) (VIH=3.7V, VIL=2.0V) 最高输入频率: <10KHz (up,down,up/down mode) <3KHz (quadrature mode) 输出动作时间 : 0.1 to 99.9 second adjustable 输出复归方式: Manual(N) Or automatic (R Or C) can be modif 继电器容量: AC 250V-5A, DC 30V-7A 显示值范围: -199999 to 999999 类比输出解析度: 15 bit DAC 输出反应速度: < 1/f+10ms(0-90%) 输出负载能力: < 10mA fOr voltage mode < 10V fOr current mode <[(V+)-7.5V]/20mA fOr two-wire mode 输出之涟波: < 0.1% F.S. 通讯位址: "01"-"FF" 传输速度: 19200/9600/4800/2400 selective 通信协议: Modbus RTU mode 显示幕: Red high efficiency LEDs high 14.22mm (.56") 参数设定方式: Touch switches 感应器电源: 12VDC +/-3%(<60mA) 记忆方式: Non-volatile E2PROM memOry 绝缘耐压能力: 2KVac/1 min. (input/output/power) 1600Vdc (input/output) 使用环境条件: 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
上传时间: 2013-11-23
上传用户:redmoons
特点 最高輸入頻率 10KHz 计数速度 50/10000脈波/秒可选择 四种输入模式可选择(加算,減算,加減算,90度相位差加減算) 90度相位差加減算具有提高解析度4倍功能 输入脈波具有预设刻度功能 前置量设定功能(二段設定)可选择 数位化指拨设定操作简易 计数暂时停止功能 3组报警功能 2:主要規格 脈波輸入型式: Jump-pin selectable current sourcing(NPN) Or current sinking (PNP) 脉波触发电位: HI bias (CMOS) (VIH=7.5V, VIL=5.5V) LO bias (TTL) (VIH=3.7V, VIL=2.0V) 最高输入频率: <10KHz (up,down,up/down mode) <5KHz (quadrature mode) 输出动作时间 : 0.1 to 99.9 second adjustable 输出复归方式: Manual(N) Or automatic (R Or C) can be modif 继电器容量: AC 250V-5A, DC 30V-7A 显示值范围: -199999 to 999999 显示幕: Red high efficiency LEDs high 9.2mm (.36") 参数设定方式: Touch switches 感应器电源: 12VDC +/-3%(<60mA) ( 感應器電源 ) 记忆方式: Non-volatile E2PROM memOry 绝缘耐压能力: 2KVac/1 min. (input/output/power) 1600Vdc (input/output) 使用环境条件: 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
上传时间: 2013-11-12
上传用户:909000580
特点 精确度0.05%满刻度 ±1位数 显示范围-19999-99999可任意规划 可直接量測直流4至20mA電流,無需另接輔助電源 尺寸小(24x48x50mm),穩定性高 分离式端子,配线容易 CE 认证 主要規格 辅助电源: None 精确度: 0.05% F.S. ±1 digit(DC) 输入抗阻: approx. 250 ohm with 20mA input 输入电压降: max. DC5V with 20mA input 最大过载能力: < ±50mA 取样时间: 2.5 cycles/sec. 显示值范围: -19999 - 99999 digit adjustable 归零调整范围: -999-999 digit adjustable 最大值调整范围: -999-999 digit adjustable 过载显示: " doFL " Or "-doFL" 极性显示: " 一 " fOr negative readings 显示幕 : Brigh Red LEDs high 8.6mm(.338") 温度系数 : 50ppm/℃ (0-50℃) 参数设定方式: Touch switches 记忆型式: Non-volatile E2 外壳材料: ABS 绝缘耐压能力: 2KVac/1 min. (input/case) 使用环境条件: 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) 外型尺寸: 24x48x50mm CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
上传时间: 2013-10-09
上传用户:lhuqi
特点 精确度0.1%满刻度 ±1位数 显示范围-19999-99999可任意规划 可直接量测直流电流/直流电压,无需另接辅助电源 尺寸小(24x48x50mm),稳定性高 分离式端子,配线容易 CE 认证 2.主要規格 辅助电源: None 精确度: 0.1% F.S. ±1 digit(1-100%F.S.) 输入抗阻 : >100Mohm(<2V range) >2Mohm(<2Vrange) < 0.25VA(current ranges) < 1000Vrms(>54V ranges) 最大过载能力: < 150Vrms(<54V ranges)
上传时间: 2013-10-08
上传用户:tiantwo
多远程二极管温度传感器-Design Considerations fOr pc thermal management Multiple RDTS (remote diode temperature sensing) provides the most accurate method of sensing an IC’s junction temperature. It overcomes thermal gradient and placement issues encountered when trying to place external sensOrs. PCB component count decreases when using a device that provides multiple inputs.Better temperature sensing improves product perfOrmance and reliability. Disk drive data integrity suffers at elevated temperatures. IBM published an article stating that a 5°C rise in operating temperature causes a 15% increase in the drive’s failure rate. The overall perfOrmance of a system can be improved by providing a mOre accurate temperature measurement of the most critical devices allowing them to run just a few degrees hotter.The LM83 directly senses its own temperature and the temperature of three external PN junctions. One is dedicated to the CPU of choice, the other two go to other parts of your system that need thermal monitOring such as the disk drive Or graphics chip. The SMBus-compatible LM83 suppOrts SMBus timeout and logic levels. The LM83 has two interrupt outputs; one fOr user-programmable limits and WATCHDOG capability (INT), the other is a Critical Temperature Alarm output (T_CRIT_A) fOr system power supply shutdown.
标签: Considerat Design 远程 二极管
上传时间: 2014-12-21
上传用户:ljd123456