15.2 已經加入了有關貫孔及銲點的Z軸延遲計算功能. 先開啟 Setup - Constraints - Electrical constraint sets 下的 DRC 選項. 點選 Electrical Constraints dialog boX 下 Options 頁面 勾選 Z-Axis delay栏.
上传时间: 2013-10-08
上传用户:王庆才
Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for battery operation. In some circumstances,due to space, power or reliability considerations,it is preferable to operate the circuitry from a single 1.5Vcell. Unfortunately, a 1.5V supply eliminates almost alllinear ICs as design candidates. In fact, the LM10 opamp-reference and the LT®1017/LT1018 comparators arethe only IC gain blocks fully specifi ed for 1.5V operation.Further complications are presented by the 600mV dropof silicon transistors and diodes. This limitation consumesa substantial portion of available supply range, makingcircuit design diffi cult. Additionally, any circuit designedfor 1.5V operation must function at end-of-life batteryvoltage, typically 1.3V. (See boX Section, “Componentsfor 1.5V Operation.”)
标签: Circuitry Operation Single 1017
上传时间: 2013-12-20
上传用户:Wwill
Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for batteryoperation. In some circumstances,due to space, power or reliability considerations,it is preferable to operate the circuitry from a single 1.5Vcell. Unfortunately, a 1.5V supply eliminates almost alllinear ICs as design candidates. In fact, the LM10 opamp-reference and the LT®1017/LT1018 comparators arethe only IC gain blocks fully specifi ed for 1.5V operation.Further complications are presented by the 600mV dropof silicon transistors and diodes. This limitation consumesa substantial portion of available supply range, makingcircuit design diffi cult. Additionally, any circuit designedfor 1.5V operation mustfunction at end-of-life batteryvoltage, typically 1.3V. (See boX Section, “Componentsfor 1.5V Operation.”)
标签: Circuitry Operation Single Cell
上传时间: 2013-10-30
上传用户:hz07104032
In predominantly digital systems it is often necessaryto include linear circuit functions. Traditionally, separatepower supplies have been used to run the linear components(see boX, “Linear Power Supplies—Past, Present,and Future”).
标签: Designing Operation Circuits Linear
上传时间: 2013-11-04
上传用户:sdq_123
飞机电网故障时,机载电气盒必须在延迟时间内切断电网,保护机载设备。采用AT89S52设计的电气盒测试仪能够测试电气盒保护功能,测量延迟时间。实际应用结果表明,该测试仪具有测量准确、可靠性高、成本低等优点。 Abstract: The helicopter-electrical-boX must shut off the helicopter power,protect the equipments of the helicopter when the helicopter power is failed.The tester for the helicopter-electrical-boX based on AT89S52is used for testing the protect-ing function and measuring the delay time.Application results show this tester has some advantages,such as accurate mea-surement,high dependability,economical cost etc.
上传时间: 2014-12-27
上传用户:786334970
产品简介1.1 产品功能:1.1.1 本产品是手持万用在线编程机的简化版。保留了 ISP/IAP 的核心功能。LCD/键盘/内置存储器、加密性能相应弱化,以降低客户应用成本。1.1.2 下载盒可储存 1 个用户程序代码文件。1.1.3 下载盒可储存 1 个固件代码,分别支持不同系列单片机/ARM 芯片的脱机/离线下载和编程。 1.1.4 可支持意法半导体公司 STM32F系列芯片的脱机 ISP 烧录。1.1.5 支持 STM32F 系列芯片的脱机加密 IAP程序烧录/升级。1.1.6 支持 FreeScale HCS08 系列和 RS08 系列芯片的脱机 BDM 编程。1.1.7 支持 MicroChip 的 PIC12/PIC16/PIC18系列芯片的脱机 ICSP 编程。1.1.8 支持 AVR 系列 8 位单片机的脱机 ISP。1.1.9 本产品将不断升级,支持更多种类和型号的芯片。如果客户需要使用暂不支持的芯片,可向单片机在线编程网提出,本网可在优先开发对应芯片的支持固件。1.1.10 可内置干电池(4 节 7 号)供电,也可用电脑 USB 口供电,或选配USB口电源适配器1.2 产品销售清单:1.2.1 单片机下载盒 1 个。1.2.2 miniUSB 连接线一条。1.2.3 10PIN 转 6PIN 排线一根。1.2.4 说明书一本(即本文件,初期以电子文件形式提供)。1.2.5 10PIN-DB9 串口转换器一个(选配件)。1.2.6 USB 型电源适配器一个(选配件)。
上传时间: 2013-10-10
上传用户:003030
介绍了AES中,SubBytes算法在FPGA的具体实现.构造SubBytes的S-boX转换表可以直接查找ROM表来实现.通过分析SubBytes算法得到一种可行性硬件逻辑电路,从而实现SubBytes变换的功能.
上传时间: 2013-11-30
上传用户:hzy5825468
15.2 已經加入了有關貫孔及銲點的Z軸延遲計算功能. 先開啟 Setup - Constraints - Electrical constraint sets 下的 DRC 選項. 點選 Electrical Constraints dialog boX 下 Options 頁面 勾選 Z-Axis delay栏.
上传时间: 2013-11-12
上传用户:Late_Li
介绍了AES中,SubBytes算法在FPGA的具体实现.构造SubBytes的S-boX转换表可以直接查找ROM表来实现.通过分析SubBytes算法得到一种可行性硬件逻辑电路,从而实现SubBytes变换的功能.
上传时间: 2014-07-10
上传用户:lacsx
您在使用UNIX吗?你曾经使用过中创的会计系统吗?那么你喜欢他的界面吗?可是你又苦于无法实现他的效果吗?现在好了,我向您免费提供 一套基于UNIX/LINUX下的 Curses 函数的函数库,使用这个函数库,您就可以快速开发类似于中创系统的界面,保证漂亮、美观、大方,此控 件包含: QWindowX.hpp 窗口类,重新封装了CURSES的类,重新制作了boX函数,彻底解决了系
上传时间: 2014-01-01
上传用户:a673761058