XAPP520將符合2.5V和3.3V I/O標(biāo)準(zhǔn)的7系列FPGA高性能I/O Bank進(jìn)行連接 The I/Os in Xilinx® 7 series FPGAs are classified as either high range (HR) or high performance (HP) banks. HR I/O banks can be operated from 1.2V to 3.3V, whereas HP I/O banks are optimized for operation between 1.2V and 1.8V. In circumstances that require an HP 1.8V I/O bank to interface with 2.5V or 3.3V logic, a range of OPTIONS can be deployed. This application note describes methodologies for interfacing 7 series HP I/O banks with 2.5V and 3.3V systems
上傳時(shí)間： 2013-11-06
上傳用戶：wentianyou
歡迎使用 PowerPCB 教程。本教程描述了 PADS-PowerPCB 的絕大部分功能和特點(diǎn)，以及使用的各個(gè)過程，這些功能包括： · 基本操作 · 建立元件(Component) · 建立板子邊框線(Board outline) · 輸入網(wǎng)表(Netlist) · 設(shè)置設(shè)計(jì)規(guī)則(Design Rule) · 元件(Part)的布局(Placement) · 手工和交互的布線 · SPECCTRA全自動(dòng)布線器(Route Engine) · 覆銅(Copper Pour) · 建立分隔/混合平面層(Split/mixed Plane) · Microsoft的目標(biāo)連接與嵌入(OLE)(Object Linking Embedding) · 可選擇的裝配選件(Assembly OPTIONS) · 設(shè)計(jì)規(guī)則檢查(Design Rule Check) · 反向標(biāo)注(Back Annotation) · 繪圖輸出(Plot Output) 使用本教程后，你可以學(xué)到印制電路板設(shè)計(jì)和制造的許多基本知識。
上傳時(shí)間： 2013-10-08
上傳用戶：x18010875091
15.2 已經(jīng)加入了有關(guān)貫孔及銲點(diǎn)的Z軸延遲計(jì)算功能. 先開啟 Setup - Constraints - Electrical constraint sets 下的 DRC 選項(xiàng). 點(diǎn)選 Electrical Constraints dialog box 下 OPTIONS 頁面 勾選 Z-Axis delay欄.
上傳時(shí)間： 2013-11-12
上傳用戶：Late_Li
§1、安裝： SPB15.2 CD1～3，安裝1、2，第3為庫，不安裝 License安裝： 設(shè)置環(huán)境變量lm_license_file D:\Cadence\license.dat 修改license中SERVER yyh ANY 5280為SERVER zeng ANY 5280 §2、用Design Entry CIS(Capture)設(shè)計(jì)原理圖 進(jìn)入Design Entry CIS Studio 設(shè)置操作環(huán)境\OPTIONS\Preferencses: 顏色：colors/Print 格子：Grid Display 雜項(xiàng)：Miscellaneous .........常取默認(rèn)值
上傳時(shí)間： 2014-01-25
上傳用戶：wangcehnglin
系統(tǒng)可用編輯器1. Overview 2. System Requirements 3. Contents of the Distribution Package 4. List of Available Command Line Flag OPTIONS 5. Contents of the Extracted Files 6. Installing the Software in Interactive Mode 7. Installing the Software in Silent Mode 8. Installing the INF Files Prior to OS Installation 8A. Installing the Windows* XP INF Files Prior to OS Installation
標(biāo)簽： Distribution Requirements Overview Contents
上傳時(shí)間： 2015-02-23
上傳用戶：wab1981
Complete video store application in C++ using linked lists to store data in files. it keeps track of videos and customers and have many checks and OPTIONS.
標(biāo)簽： store application Complete linked
上傳時(shí)間： 2014-06-20
上傳用戶：zhoujunzhen
介紹幾種cpuThe 8xC251SA/SB/SP/SQ improves on the MCS-51 architecture and peripheral features, introducing the advanced register based CPU architecture i.e., the MCS 251 microcontroller architecture. The register based CPU supports a 40-byte register file. In addition, the 8xC251SA/SB/SP/SQ microcontroller has 256-Kbyte expanded external code/data memory space and 64-Kbyte stack space. The new controller is also specially designed to execute C code efficiently. More importantly, the 8xC251SA/SB/SP/SQ maintains binary code compatibility with MCS 51 microcontrollers but at the same time allows the use of the powerful MCS 251 microcontroller instruction set, with many new 8, 16 and 32 bit instructions available. The 8xC251SA/SB/SP/SQ has 512 bytes or 1 Kbyte of on-chip data RAM OPTIONS and is available in 16 Kbytes and 8 Kbytes of on-chip ROM/OTPROM or ROMless OPTIONS.
標(biāo)簽： architecture introducin peripheral improves
上傳時(shí)間： 2015-03-15
上傳用戶：ccclll
解決時(shí)鐘問題，acm競賽題 A weird clock marked from 0 to 59 has only a minute hand. It won t move until a special coin is thrown into its box. There are different kinds of coins as your OPTIONS. However once you make your choice, you cannot use any other kind. There are infinite number of coins of each kind, each marked with a number d ( 0 <= 1000 ), meaning that this coin will make the minute hand move d times clockwise the current time. For example, if the current time is 45, and d = 2. Then the minute hand will move clockwise 90 minutes and will be pointing to 15. Now you are given the initial time s ( 0 <= s <= 59 ) and the coin s type d. Write a program to find the minimum number of d-coins needed to turn the minute hand back to 0.
標(biāo)簽： 時(shí)鐘
上傳時(shí)間： 2015-05-21
上傳用戶：rishian
這個(gè)例子如果運(yùn)行,將在仿真的PC窗口中的第1,2,3行顯示一些信息后,在隨機(jī)位置顯示 1 ~ 5 .由于keil c51默認(rèn)不支持重入函數(shù),它的重入函數(shù)使用仿真的重入棧而不使用系統(tǒng)棧,而Small RTOS 51沒有進(jìn)行重入棧管理,所以在TaskA~TaskE雖然及其相似,但不能合并. 注意:(1)在KEIL C51 工程中,我已經(jīng)把輸出文件目錄設(shè)在e:\temp中,您可以在Project->OPTIONS for Target "Target 1"的output頁點(diǎn)擊Select Folder for Objects...和Listing頁點(diǎn)擊Select Folder for Listing...改變. (2)編譯時(shí)會(huì)有5個(gè)警告,其中一個(gè)是因?yàn)闆]有使用一個(gè)系統(tǒng)函數(shù)OSSendSignal引起,它可以忽略.另4個(gè)是禁止任務(wù)間變量覆蓋分析引起,必須忽略.感謝網(wǎng)友John X. Liu,在這個(gè)例子中我使用了他編寫的仿真(dllPc51Emu.dll),這個(gè)dll原來是為他移植的Ucos-ii for keil c51的例子編寫. (3)Pc51Emu.dll在KEIL C51 V6.23 V7.00工作不正常.
上傳時(shí)間： 2015-05-29
上傳用戶：無聊來刷下
這個(gè)例子是例子2的另一種寫法（但任務(wù)數(shù)量不同）,它使用了最高優(yōu)先級任務(wù)作為顯示任務(wù),全局變量ShowChar作為參數(shù).函數(shù)TaskB是優(yōu)先級1~10的任務(wù)函數(shù),因?yàn)闆]有使用局部變量,這些任務(wù)可以用一個(gè)函數(shù). 注意:(1)在KEIL C51 工程中,我已經(jīng)把輸出文件目錄設(shè)在e:\temp中,您可以在Project->OPTIONS for Target "Target 1"的output頁點(diǎn)擊Select Folder for Objects...和Listing頁點(diǎn)擊Select Folder for Listing...改變. 感謝網(wǎng)友John X. Liu,在這個(gè)例子中我使用了他編寫的仿真dll(Pc51Emu.dll),這個(gè)dll原來是為他移植的Ucos-ii for keil c51的例子編寫. (2)Pc51Emu.dll在KEIL C51 V6.23 V7.00工作不正常.
標(biāo)簽： ShowChar TaskB 函數(shù) 10
上傳時(shí)間： 2015-05-29
上傳用戶：asddsd
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