Abstract: This article discusses the requirements and design considerations for automotive applications, including those for enginecontrol, infotainment, and body electronics. It also discusses several Maxim devices that are ideal for automotive applications.
上传时间： 2013-10-27
上传用户：jiangxiansheng
A frequent requirement in systems involves drivinganalog signals into non-linear or reactive loads. Cables,transformers, actuators, motors and sample-hold circuitsare examples where the ability to drive diffi cult loads isrequired. Although several power buffer amplifi ers areavailable, none have been optimized for driving diffi cultloads.
上传时间： 2014-12-24
上传用户：1109003457
The LTM4601 DC/DC μModule regulator is a completehigh power density stepdown regulator for up to 12Acontinuous (14A peak) loads. The device is housed ina small 15mm ¥ 15mm ¥ 2.8mm LGA surface mountpackage, thus the large power dissipation is a challengein some applications. This thermal application note willprovide guidelines for using the μModule regulator inambient environments with or without air fl ow. Loadcurrent derating curves are provided for several inputvoltages and output voltages versus ambient temperatureand air fl ow.
上传时间： 2013-10-19
上传用户：bakdesec
从系统硬件设计和软件构成上，介绍一种以AT89C52单片机为核心,通过无线遥控方法实现对预设电话自动拨号报警的智能呼救系统。系统提供了患者在紧急情况下无法使用电话报警时的一种报警手段。由用户预设的多组电话号码作为语音报警对象,预录可长达20 s的语音信号来说明患者所处地点及病情，并通知患者家人。 Abstract: This paper introduces a intelligent alarming system which is realized by wireless remote control system.This system chiefly consists of AT89C51 the system can processor.User can input several groups of telephone number regarded as alarming objects,The system can record some information 20 seconds to tell the site of the patient.And notice the rokonok of the patient.
上传时间： 2013-11-19
上传用户：wd450412225
介绍了一种基于AT89S52微处理器、键控显示模式、多汉字显示的显示模块设计方法。对AT89S52的内部功能及使用高128字节RAM时的寻址方式进行说明。给出了四汉字显示模块的硬件电路原理图、主程序流程图以及中断显示流程图。 Abstract: The design method of display module base on the AT89S52 microcontroller,display mode controlled by keyboard and? showing several Chinese characterses are introduced in the paper.The internal function and the addressing mode for the high 128B RAM of the AT89S52 are explained.The basic circuit diagram,the main program flow chart and the display interrupt flow chart of four Chinese characterses display module are also given.
上传时间： 2014-01-23
上传用户：咔乐坞
The TL2575 and TL2575HV represent superior alternatives to popular three-terminal linear regulators. Due totheir high efficiency, the devices significantly reduce the size of the heatsink and, in many cases, no heatsink isrequired. Optimized for use with standard series of inductors available from several different manufacturers, theTL2575 and TL2575HV greatly simplify the design of switch-mode power supplies by requiring a minimaladdition of only four to six external components for operation.
标签： STEP-DOWN SWITCHING SIMPLE 1A
上传时间： 2013-11-20
上传用户：jelenecheung
The Philips family of Multiplexers and Switches consists of bi-directional translating switches controlled via the I2C or SMBus to fan out an upstream SCL/SDA pair to 2, 4 or 8 downstream channels of SCx/SDx pairs. The Multiplexers allow only one downstream channel to be selected at a time, while the Switches allow any individual downstream channel or combination of downstream channels to be selected, depending on the content of the programmable control register. Once one or several channels have been selected, the device acts as a wire, allowing the master on the upstream channel to send commands to devices on all the active downstream channels, and devices on the active downstream channels to communicate with each other and the master. External pull-up resistors are used to pull each individual channel up to the desired voltage level. Combined interrupt output and hardware reset input are device options that are featured.
上传时间： 2013-10-11
上传用户：dianxin61
The P82B715 I2C Buffer was designed toextend the range of the local I2C bus out to50 Meters. This application note describesthe results of testing the buffer on severaldifferent types of cables to determine themaximum operating distances possible. Theresults are summarized in a table for easyreference.
标签： extender P82B715 Using I2C
上传时间： 2014-12-28
上传用户：lou45566
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 图Figure 1. Local Safety System
上传时间： 2013-11-05
上传用户：维子哥哥
针对嵌入式机器视觉系统向独立化、智能化发展的要求，介绍了一种嵌入式视觉系统--智能相机。基于对智能相机体系结构、组成模块和图像采集、传输和处理技术的分析，对国内外的几款智能相机进行比较。综合技术发展现状，提出基于FPGA+DSP模式的硬件平台，并提出智能相机的发展方向。分析结果表明，该系统设计可以实现脱离PC运行，完成图像获取与分析，并作出相应输出。 Abstract: This paper introduced an embedded vision system-intelligent camera ，which was for embedded machine vision systems to an independent and intelligent development requirements. Intelligent camera architecture， component modules and image acquisition， transmission and processing technology were analyzed. After comparing integrated technology development of several intelligent cameras at home and abroad， the paper proposed the hardware platform based on FPGA+DSP models and made clear direction of development of intelligent cameras. On the analysis of the design， the results indicate that the system can run from the PC independently to complete the image acquisition and analysis and give a corresponding output.
上传时间： 2013-10-24
上传用户：bvdragon
