DC/DC 升压IC：The FP6291 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.25 Ω power MOSFET make this regulator highly power efficient. The internal compensation network also minimizes as much as 6 external component counts. The non-inverting input of error amplifier connects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrush current. The FP6291 is available in the SOT23-6L package and provides space-saving PCB for the application fields.
上传时间： 2013-11-07
上传用户：3294322651
Industrial remote monitoring systems and keep-alivecircuits spend most of their time in standby mode. Manyof these systems also depend on battery power, so powersupply effi ciency in standby state is very important tomaximize battery life. The LT®8410/-1 high effi ciencyboost converter is ideal for these systems, requiringonly 8.5μA of quiescent current in standby mode. Thedevice integrates high value (12.4M/0.4M) output feedbackresistors, signifi cantly reducing input current whenthe output is in regulation with no load. Other featuresinclude an integrated 40V switch and Schottky diode,output disconnect with current limit, built in soft-start,overvoltage protection and a wide input range, all in atiny 8-pin 2mm × 2mm DFN package.
上传时间： 2013-11-23
上传用户：新手无忧
xlisp单片机驱动程序是是深圳市学林电子有限公司综合多年经验开发出的多功能8051单片机平台（兼容AVR/PIC单片机的部份烧写实验功能）。 集成常用的单片机外围硬件，ISP下载线，单片机仿真器， 单片机试验板，编程器功能于一身。配合本公司的近百个详细的汇编/c语言例子程序，可以让您在最短的时间内，全面的了解掌握单片机编程技术。特别适合于单片机初学者， 大中专院校， 单片机工程师， 实验室选用。 系统的特点： 1 全开放的模块化设计：所有硬件资源对用户开放，搭配随心所欲，不会出现硬件束缚软件的情况。既可学习软件， 更可深入的了解硬件。 2 高品质的工艺： 本机采用高档透明雅克力面板， 铝合金外箱， 全贴片机器生产， 工艺精美绝伦！ 3 超强的电路资源配备：集成了基本上所有单片机应用中可能遇到的功能模块部份，你再也不必要去找其他零件，即可轻松完成您所需要的开发任务。 4 完美的例子程序： 集合本公司多年的经验，每个模块都有完整的带中文注释例子程序， 原理图， 接线方法， 很多都可以直接拿来应用。快速提高您的硬件，软件编程水平。 5 所有端口全部采用防插反设计，均配有连接照片和中文注解，即便您是初学者，也能轻松掌握。 6 配有ISP下载头。可选232/USB通信，CPU控制编程，不受电脑配置及操作系统影响，稳定性一流。 可以作为一台独立的ISP下载线使用，支持芯片包括51/AVR/PIC各系列！同时在板上可以直接对89S51/52等等芯片编程,当作独立编程器使用。 7 配有40P外接仿真头，可以作为一台独立的51单片机硬件仿真器使用，通过KEIL SOFT软件配合， 即可对外部硬件以及板上资源实现单步调试， 断点， 全速等等全部功能。 8 全中文软件操作导航， 独有智能一键通设计，擦除， 写入， 校验，运行自动完成，软件中英文自动选择， 适合港台地区用户使用。 特别设计的烧写实验仿真3IN1的公用卡座， CPU插上后即不需要插拔，烧写仿真等公用串口，使用极其方便简洁。 9 价格低廉，轻松拥有！ 目前市面上同类产品价格均在2000-3000左右， 本套件是第一款600元以下的高档单片机实验仪！
上传时间： 2014-12-25
上传用户：范缜东苑
This white paper raises some fundamental issues the design engineer should address before deciding upon a communication approach for a wireless network. As no universal wireless network solution exists, it should be custom tailored to suit the application demands. Defining your application communication characteristics is the key to ensure optimal communication reliability and resistance to interfering noise sources.
上传时间： 2013-11-23
上传用户：zhichenglu
介绍了CAN总线和P87C591单片机的特点，给出了基于P87C591单片机的信号采集节点的软、硬件设计，指出了硬件电路设计中应注意的问题，在软件设计中重点介绍了节点初始化、报文发送和报文接收等子程序。 Abstract: The features of CAN Bus and the microcontroller P87C591 are introduced, and the design of hardware circuit and soft configuration of the signals collection node based on P87C591 are presented. The problems in designing hardware circuit are discussed.Initialization subprogram, transmiting subprogram and receiving subprogram are emphasized in soft configuration.
上传时间： 2013-11-03
上传用户：BIBI
C8051F330低成本智能单相交流电压表方案(取代传统动圈表) 该方案采用的http://www.elecfans.com/soft/33/2010/单片机集成度高，资源丰富。与其它类型的http://www.elecfans.com/soft/33/2010/单片机相比，所需要外加的外围器件最少，是做智能单相电流电压表最理想的一款http://www.elecfans.com/soft/33/2010/单片机。
上传时间： 2013-10-27
上传用户：z754970244
SAE J1939协议是由汽车工程协会(SAE)定义的，SAE J1939协议在商用车辆、舰船、轨道机车、农业机械和大型发动机中是应用最广泛的应用层协议，基于传输可靠性能优越的CAN-bus总线，可达到250Kbps的通讯速率。在协议中，不仅指定了传输类型、报文结构及其分段、流量检查等，而且报文内容本身也做了精确的定义，SAE J1939协议由美国SAE( Society of Automotive Engineer)组织维护和推广
上传时间： 2013-12-02
上传用户：lyson
Abstract: There are many things to consider when designing a power supply for a field-programmablegate array (FPGA). These include (but are not limited to) the high number of voltage rails, and thediffering requirements for both sequencing/tracking and the voltage ripple limits. This application noteexplains these and other power-supply considerations that an engineer must think through whendesigning a power supply for an FPGA.
上传时间： 2013-11-10
上传用户：iswlkje
It would not be an exaggeration to say that semiconductor devices have transformed humanlife. From computers to communications to internet and video games these devices and the technologies they have enabled have expanded human experience in a way that is unique in history. Semiconductor devices have exploited materials, physics and imaginative applications to spawn new lifestyles. Of course for the device engineer, in spite of the advances, the challenges of reaching higher frequency, lower power consumption, higher power generation etc.
上传时间： 2013-10-28
上传用户：songnanhua
通过以太网远程配置Nios II 处理器 应用笔记 Firmware in embedded hardware systems is frequently updated over the Ethernet. For embedded systems that comprise a discrete microprocessor and the devices it controls, the firmware is the software image run by the microprocessor. When the embedded system includes an FPGA, firmware updates include updates of the hardware image on the FPGA. If the FPGA includes a Nios® II soft processor, you can upgrade both the Nios II processor—as part of the FPGA image—and the software that the Nios II processor runs, in a single remote configuration session.
上传时间： 2013-11-22
上传用户：chaisz
