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soft-engineer

FP6291

DC/DC 升壓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.

標簽： 6291 FP

上傳時間： 2013-11-07

上傳用戶：3294322651
DN465 超低功耗升壓轉換器

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.

標簽： 465 DN 超低功耗升壓轉換器

上傳時間： 2013-11-23

上傳用戶：新手無憂
xlisp最新驅動程序

xlisp單片機驅動程序是是深圳市學林電子有限公司綜合多年經驗開發出的多功能8051單片機平臺（兼容AVR/PIC單片機的部份燒寫實驗功能）。集成常用的單片機外圍硬件，ISP下載線，單片機仿真器，單片機試驗板，編程器功能于一身。配合本公司的近百個詳細的匯編/c語言例子程序，可以讓您在最短的時間內，全面的了解掌握單片機編程技術。特別適合于單片機初學者，大中專院校，單片機工程師，實驗室選用。系統的特點： 1 全開放的模塊化設計：所有硬件資源對用戶開放，搭配隨心所欲，不會出現硬件束縛軟件的情況。既可學習軟件，更可深入的了解硬件。 2 高品質的工藝：本機采用高檔透明雅克力面板，鋁合金外箱，全貼片機器生產，工藝精美絕倫！ 3 超強的電路資源配備：集成了基本上所有單片機應用中可能遇到的功能模塊部份，你再也不必要去找其他零件，即可輕松完成您所需要的開發任務。 4 完美的例子程序：集合本公司多年的經驗，每個模塊都有完整的帶中文注釋例子程序，原理圖，接線方法，很多都可以直接拿來應用?？焖偬岣吣挠布浖幊趟?。 5 所有端口全部采用防插反設計，均配有連接照片和中文注解，即便您是初學者，也能輕松掌握。 6 配有ISP下載頭?？蛇x232/USB通信，CPU控制編程，不受電腦配置及操作系統影響，穩定性一流。可以作為一臺獨立的ISP下載線使用，支持芯片包括51/AVR/PIC各系列！同時在板上可以直接對89S51/52等等芯片編程,當作獨立編程器使用。 7 配有40P外接仿真頭，可以作為一臺獨立的51單片機硬件仿真器使用，通過KEIL SOFT軟件配合，即可對外部硬件以及板上資源實現單步調試，斷點，全速等等全部功能。 8 全中文軟件操作導航，獨有智能一鍵通設計，擦除，寫入，校驗，運行自動完成，軟件中英文自動選擇，適合港臺地區用戶使用。特別設計的燒寫實驗仿真3IN1的公用卡座， CPU插上后即不需要插拔，燒寫仿真等公用串口，使用極其方便簡潔。 9 價格低廉，輕松擁有！目前市面上同類產品價格均在2000-3000左右，本套件是第一款600元以下的高檔單片機實驗儀！

標簽： xlisp 驅動程序

上傳時間： 2014-12-25

上傳用戶：范縝東苑
無線通信網絡基本概念及設計

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.

標簽： 無線通信網絡基本概念

上傳時間： 2013-11-23

上傳用戶：zhichenglu
基于P87C591的信號采集節點的設計

介紹了CAN總線和P87C591單片機的特點，給出了基于P87C591單片機的信號采集節點的軟、硬件設計，指出了硬件電路設計中應注意的問題，在軟件設計中重點介紹了節點初始化、報文發送和報文接收等子程序。 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.

標簽： P87C591 信號采集節點

上傳時間： 2013-11-03

上傳用戶：BIBI
C8051F330低成本智能單相交流電壓表方案(取代傳統動圈

C8051F330低成本智能單相交流電壓表方案(取代傳統動圈表) 該方案采用的http://www.elecfans.com/soft/33/2010/單片機集成度高，資源豐富。與其它類型的http://www.elecfans.com/soft/33/2010/單片機相比，所需要外加的外圍器件最少，是做智能單相電流電壓表最理想的一款http://www.elecfans.com/soft/33/2010/單片機。

標簽： C8051F330 單相交流動圈電壓表

上傳時間： 2013-10-27

上傳用戶：z754970244
SAE J1939協議分析指南

SAE J1939協議是由汽車工程協會(SAE)定義的，SAE J1939協議在商用車輛、艦船、軌道機車、農業機械和大型發動機中是應用最廣泛的應用層協議，基于傳輸可靠性能優越的CAN-bus總線，可達到250Kbps的通訊速率。在協議中，不僅指定了傳輸類型、報文結構及其分段、流量檢查等，而且報文內容本身也做了精確的定義，SAE J1939協議由美國SAE( Society of Automotive Engineer)組織維護和推廣

標簽： J1939 SAE 協議分析

上傳時間： 2013-12-02

上傳用戶：lyson
為您的FPGA選擇合適的電源

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.

標簽： FPGA 電源

上傳時間： 2013-11-10

上傳用戶：iswlkje
半導體器件物理與設計

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.

標簽： 半導體器件物理

上傳時間： 2013-10-28

上傳用戶：songnanhua
遠程配置Nios II處理器應用筆記

通過以太網遠程配置Nios II 處理器應用筆記 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.

標簽： Nios 遠程處理器應用筆記

上傳時間： 2013-11-22

上傳用戶：chaisz