The makers of handheld medical, industrial and consumerdevices use a wide variety of high resolution, small tomedium sized color TFT LCD displays. The power supplydesigners for these displays must contend with shrinkingboard area, tight schedules, and variations in displaytypes and feature requirements. The LTC®3524 simplifi esthe designer’s job by combining a versatile, easily programmed,TFT LCD bias supply and white LED backlightdriver in a low profi le 4mm × 4mm QFN package.
上傳時間： 2013-10-26
上傳用戶：chens000
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.”)
標簽： Circuitry Operation Single Cell
上傳時間： 2013-10-30
上傳用戶：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”).
標簽： Designing Operation Circuits Linear
上傳時間： 2013-11-04
上傳用戶：sdq_123
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.
上傳時間： 2013-11-23
上傳用戶：zhichenglu
飛機電網故障時，機載電氣盒必須在延遲時間內切斷電網，保護機載設備。采用AT89S52設計的電氣盒測試儀能夠測試電氣盒保護功能，測量延遲時間。實際應用結果表明，該測試儀具有測量準確、可靠性高、成本低等優點。 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.
上傳時間： 2014-12-27
上傳用戶：786334970
產品簡介1.1 產品功能：1.1.1 本產品是手持萬用在線編程機的簡化版。保留了 ISP/IAP 的核心功能。LCD/鍵盤/內置存儲器、加密性能相應弱化，以降低客戶應用成本。1.1.2 下載盒可儲存 1 個用戶程序代碼文件。1.1.3 下載盒可儲存 1 個固件代碼，分別支持不同系列單片機/ARM 芯片的脫機/離線下載和編程。 1.1.4 可支持意法半導體公司 STM32F系列芯片的脫機 ISP 燒錄。1.1.5 支持 STM32F 系列芯片的脫機加密 IAP程序燒錄/升級。1.1.6 支持 FreeScale HCS08 系列和 RS08 系列芯片的脫機 BDM 編程。1.1.7 支持 MicroChip 的 PIC12/PIC16/PIC18系列芯片的脫機 ICSP 編程。1.1.8 支持 AVR 系列 8 位單片機的脫機 ISP。1.1.9 本產品將不斷升級，支持更多種類和型號的芯片。如果客戶需要使用暫不支持的芯片，可向單片機在線編程網提出，本網可在優先開發對應芯片的支持固件。1.1.10 可內置干電池(4 節 7 號)供電，也可用電腦 USB 口供電，或選配USB口電源適配器1.2 產品銷售清單：1.2.1 單片機下載盒 1 個。1.2.2 miniUSB 連接線一條。1.2.3 10PIN 轉 6PIN 排線一根。1.2.4 說明書一本(即本文件，初期以電子文件形式提供)。1.2.5 10PIN-DB9 串口轉換器一個(選配件)。1.2.6 USB 型電源適配器一個(選配件)。
上傳時間： 2013-10-10
上傳用戶：003030
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. 圖Figure 1. Local Safety System
上傳時間： 2013-11-05
上傳用戶：維子哥哥
The standard that governs the design of avioniccomponents and systems, DO-254, is one of the mostpoorly understood but widely applicable standardsin the avionic industry. While information on thegeneral aspects of the standard is easy to obtain, thedetails of exactly how to implement the standard aresketchy. And once an entity develops a process thatachieves compliance, the details of how compliancewas achieved become part of the intellectualproperty of that entity. This white paper focuses onthe details of developing a DO-254 compliantprocess for the design of FPGAs.
上傳時間： 2013-11-12
上傳用戶：q123321
介紹了AES中,SubBytes算法在FPGA的具體實現.構造SubBytes的S-Box轉換表可以直接查找ROM表來實現.通過分析SubBytes算法得到一種可行性硬件邏輯電路,從而實現SubBytes變換的功能.
上傳時間： 2013-11-30
上傳用戶：hzy5825468
ref-sdr-sdram-vhdl代碼 SDR SDRAM Controller v1.1 readme.txt This readme file for the SDR SDRAM Controller includes information that was not incorporated into the SDR SDRAM Controller White Paper v1.1. The PLL is targeted at APEX(TM) devices. Please regenerate for your chosen architecture. Last updated September, 2002 Copyright ?2002 Altera Corporation. All rights reserved.
上傳時間： 2013-11-13
上傳用戶：takako_yang
