介紹了Infineon(英飛凌)公司DAVE2．O軟件的使用方法和一些需注意的要點(diǎn)，并按照流程編寫了一個(gè)“Infineon XC164CM”的閃燈測(cè)試程序
上傳時(shí)間： 2013-07-13
上傳用戶：牛布牛
]本文介紹了如何利用CPLD(復(fù)雜可編程邏輯器件)與單片機(jī)的結(jié)合實(shí)現(xiàn)并行I／\r\nO(輸入／輸出)接口的擴(kuò)展。該設(shè)計(jì)與用8255做并行I／O接口相比，與單片機(jī)軟件完全兼容，\r\n同時(shí)擁有速度快，功耗低，價(jià)格便宜，使用靈活等特點(diǎn)
標(biāo)簽： CPLD 如何利用 單片機(jī) 并行
上傳時(shí)間： 2013-08-14
上傳用戶：xa_lgy
:針對(duì)現(xiàn)場(chǎng)可編程門陣列(FPGA)芯片的特點(diǎn),研究FPGA中雙向端口I/O的設(shè)計(jì),同時(shí)給出仿真初始化雙向端口I/O的方法。采用這種雙向端口的設(shè)計(jì)方法,選用Xilinx的Spartan2E芯片設(shè)計(jì)一個(gè)多通道圖像信號(hào)處理系統(tǒng)。
上傳時(shí)間： 2013-08-17
上傳用戶：xiaoyunyun
Recent advances in low voltage silicon germaniumand BiCMOS processes have allowed the design andproduction of very high speed amplifi ers. Because theprocesses are low voltage, most of the amplifi er designshave incorporated differential inputs and outputs to regainand maximize total output signal swing. Since many lowvoltageapplications are single-ended, the questions arise,“How can I use a differential I/O amplifi er in a single-endedapplication?” and “What are the implications of suchuse?” This Design Note addresses some of the practicalimplications and demonstrates specifi c single-endedapplications using the 3GHz gain-bandwidth LTC6406differential I/O amplifi er.
標(biāo)簽： 單端應(yīng)用 差分 放大器
上傳時(shí)間： 2013-11-23
上傳用戶：rocketrevenge
HIGH SPEED 8051 μC CORE - Pipe-lined Instruction Architecture; Executes 70% of Instructions in 1 or 2 System Clocks - Up to 25MIPS Throughput with 25MHz System Clock - 22 Vectored Interrupt Sources MEMORY - 4352 Bytes Internal Data RAM (256 + 4k) - 64k Bytes In-System Programmable FLASH Program Memory - External Parallel Data Memory Interface – up to 5Mbytes/sec DIGITAL PERIPHERALS - 64 Port I/O; All are 5V tolerant - Hardware SMBusTM (I2CTM Compatible), SPITM, and Two UART Serial Ports Available Concurrently - Programmable 16-bit Counter/Timer Array with 5 Capture/Compare Modules - 5 General Purpose 16-bit Counter/Timers - Dedicated Watch-Dog Timer; Bi-directional Reset CLOCK SOURCES - Internal Programmable Oscillator: 2-to-16MHz - External Oscillator: Crystal, RC, C, or Clock - Real-Time Clock Mode using Timer 3 or PCA SUPPLY VOLTAGE ........................ 2.7V to 3.6V - Typical Operating Current: 10mA @ 25MHz - Multiple Power Saving Sleep and Shutdown Modes 100-Pin TQFP (64-Pin Version Available) Temperature Range: –40°C to +85°C
標(biāo)簽： C8051F020
上傳時(shí)間： 2013-10-12
上傳用戶：lalalal
介紹了用單片機(jī)C 語(yǔ)言實(shí)現(xiàn)無(wú)功補(bǔ)償中電容組循環(huán)投切的基本原理和算法，并舉例說明。關(guān)鍵詞：循環(huán)投切;C51;無(wú)功補(bǔ)償中圖分類號(hào)： TM76 文獻(xiàn)標(biāo)識(shí)碼： BAbstract: This paper introduces the aplication of C51 in the controlling of capacitorsuits cycle powered to be on and off in reactive compensation.it illustrate thefondamental principle and algorithm with example.Key words: cycle powered to be on and off; C51; reactive compensation 為提高功率因數(shù)，往往采用補(bǔ)償電容的方法來實(shí)現(xiàn)。而電容器的容量是由實(shí)時(shí)功率因數(shù)與標(biāo)準(zhǔn)值進(jìn)行比較來決定的，實(shí)時(shí)功率因數(shù)小于標(biāo)準(zhǔn)值時(shí)，需投入電容組，實(shí)時(shí)功率因數(shù)大于標(biāo)準(zhǔn)值時(shí)，則需切除電容組。投切方式的不合理，會(huì)對(duì)電容器造成損壞，現(xiàn)有的控制器多采用“順序投切”方式，在這種投切方式下排序在前的電容器組，先投后切；而后面的卻后投先切。這不僅使處于前面的電容組經(jīng)常處于運(yùn)行狀態(tài)，積累熱量不易散失，影響其使用壽命，而且使后面的投切開關(guān)經(jīng)常動(dòng)作，同樣減少壽命。合理的投切方式應(yīng)為“循環(huán)投切”。這種投切方式使先投入的運(yùn)行的電容組先退出，后投的后切除，從而使各組電容及投切開關(guān)使用機(jī)率均等，降低了電容組的平均運(yùn)行溫度，減少了投切開關(guān)的動(dòng)作次數(shù)，延長(zhǎng)了其使用壽命。
標(biāo)簽： C51 無(wú)功補(bǔ)償 循環(huán) 電容
上傳時(shí)間： 2014-12-27
上傳用戶：hopy
常用主板I/O芯片簡(jiǎn)介
上傳時(shí)間： 2013-11-10
上傳用戶：yupw24
〔摘要〕介紹了幾種通過單片機(jī)1/O口鍵盤擴(kuò)展的方法。主要探討了幾種采用較少的1/O口實(shí)現(xiàn)較多按鍵的方法。〔關(guān)鍵詞〕單片機(jī);1/O口;鍵盤擴(kuò)展
標(biāo)簽： 單片機(jī) 鍵盤 擴(kuò)展方法
上傳時(shí)間： 2013-10-31
上傳用戶：jkhjkh1982
各系列I/O型單片機(jī)使用手冊(cè) 第一部份 單片機(jī)概論 1第一章 硬件結(jié)構(gòu) 3簡(jiǎn)介3特性4技術(shù)特性4內(nèi)核特性4周邊特性5選擇表6系統(tǒng)框線圖7引腳分配8引腳說明10極限參數(shù)15直流電氣特性16交流電氣特性18EEPROM 交流電氣特性18系統(tǒng)結(jié)構(gòu)圖19時(shí)序和流水線結(jié)構(gòu)(Pipelining) 19程序計(jì)數(shù)器21堆棧23算術(shù)及邏輯單元 – ALU24MTP 程序存儲(chǔ)器25結(jié)構(gòu)25特殊向量26查表27查表程序范例28在線燒寫30數(shù)據(jù)存儲(chǔ)器31結(jié)構(gòu)31通用數(shù)據(jù)存儲(chǔ)器32專用數(shù)據(jù)存儲(chǔ)器32
上傳時(shí)間： 2013-10-15
上傳用戶：yimoney
I/O 型單片機(jī)使用手冊(cè) 目錄 間接尋址寄存器 – IAR, IAR0, IAR1 .............................................35間接尋址指針 – MP, MP0, MP1 ......................................................35存儲(chǔ)區(qū)指針 – BP .........................................................................36累加器 – ACC...................................................................................37程序計(jì)數(shù)器低字節(jié)寄存器 – PCL....................................................37表格寄存器 – TBLP,TBHP,TBLH....................................................37看門狗定時(shí)寄存器 – WDTS............................................................38狀態(tài)寄存器 – STATUS.....................................................................38中斷控制寄存器 – INTC,INTC0,INTC1 .........................................39定時(shí)/計(jì)數(shù)寄存器...............................................................................39輸入/輸出端口和控制寄存器...........................................................40UART 寄存器 .USR,UCR1,UCR2,TXR/RXR,BRG.......................40輸入/輸出端口..........................................................................................41上拉電阻............................................................................................41PA 口的喚醒......................................................................................41輸入/輸出端口控制寄存器...............................................................41引腳共享功能....................................................................................42編程注意事項(xiàng)....................................................................................45定時(shí)/計(jì)數(shù)器..............................................................................................46配置定時(shí)/計(jì)數(shù)器輸入時(shí)鐘源...........................................................47定時(shí)/計(jì)數(shù)寄存器 – TMR, TMR0,TMR0L/TMR0H,TMR1L/TMR1H,TMR2.....................................................................49定時(shí)/計(jì)數(shù)控制寄存器 – TMRC,TMR0C,TMR1C,TMR2C............50定時(shí)器模式........................................................................................53事件計(jì)數(shù)器模式................................................................................53脈沖寬度測(cè)量模式............................................................................54可編程分頻器(PFD)和蜂鳴器的應(yīng)用..............................................55預(yù)分頻器(Prescaler)...........................................................................56輸入/輸出接口...................................................................................56編程注意事項(xiàng)....................................................................................57定時(shí)/計(jì)數(shù)器應(yīng)用范例.......................................................................57中斷............................................................................................................59中斷寄存器........................................................................................59中斷優(yōu)先權(quán)........................................................................................62外部中斷............................................................................................63定時(shí)/計(jì)數(shù)器中斷...............................................................................64UART 中斷........................................................................................64編程注意事項(xiàng)....................................................................................65復(fù)位和初始化............................................................................................66復(fù)位....................................................................................................66目錄iii異步串行口——UART............................................................................74UART 特性..........................................................................................74UART 外部引腳..................................................................................74數(shù)據(jù)發(fā)送.............................................................................................75UART 狀態(tài)控制寄存器......................................................................75波特率發(fā)生器.....................................................................................79UART 設(shè)置與控制..............................................................................81UART 發(fā)送器......................................................................................83UART 接收器......................................................................................84接收錯(cuò)誤處理.....................................................................................85接收中斷圖解.....................................................................................86地址檢測(cè)模式.....................................................................................86暫停模式下的UART 功能.................................................................87UART 應(yīng)用范例.................................................................................87振蕩器........................................................................................................89系統(tǒng)時(shí)鐘配置....................................................................................89系統(tǒng)晶體/陶瓷振蕩器.......................................................................89系統(tǒng)電阻電容振蕩器........................................................................90內(nèi)部系統(tǒng)電阻電容振蕩器................................................................90RTC 振蕩器........................................................................................91看門狗定時(shí)振蕩器............................................................................91暫停和喚醒................................................................................................92暫停.....................................................................................................92進(jìn)入暫停.............................................................................................92靜態(tài)電流.............................................................................................92喚醒....................................................................................................92看門狗定時(shí)器............................................................................................94掩膜選項(xiàng)....................................................................................................96應(yīng)用電路....................................................................................................97第二部份 程序語(yǔ)言.....................................................................99第二章 指令集介紹.................................................................................101指令集......................................................................................................101指令周期..........................................................................................101數(shù)據(jù)的傳送......................................................................................101算術(shù)運(yùn)算..........................................................................................102邏輯和移位運(yùn)算..............................................................................102分支和控制的轉(zhuǎn)換..........................................................................102位運(yùn)算..............................................................................................102查表運(yùn)算..........................................................................................103其它運(yùn)算..........................................................................................103指令設(shè)定一覽表......................................................................................104慣例..................................................................................................104I/O 型單片機(jī)使用手冊(cè)iv第三章 指令定義.....................................................................................107第四章 匯編語(yǔ)言和編譯器.....................................................................121常用符號(hào)..................................................................................................121語(yǔ)句語(yǔ)法..................................................................................................122名稱..................................................................................................122操作項(xiàng)..............................................................................................122操作數(shù)項(xiàng)..........................................................................................122注解..................................................................................................122編譯偽指令..............................................................................................123條件編譯偽指令..............................................................................123文件控制偽指令..............................................................................124程序偽指令......................................................................................126數(shù)據(jù)定義偽指令..............................................................................130宏指令..............................................................................................132匯編語(yǔ)言指令..........................................................................................136名稱..................................................................................................136助記符..............................................................................................136操作數(shù)、運(yùn)算子和表達(dá)式..............................................................136其它..........................................................................................................139前置引用..........................................................................................139局部標(biāo)號(hào)..........................................................................................139匯編語(yǔ)言保留字..............................................................................140編譯器選項(xiàng)..............................................................................................141編譯列表文件格式..................................................................................141源程序列表......................................................................................141編譯總結(jié)..........................................................................................142其它..................................................................................................142第三部份 開發(fā)工具................................................................... 145第五章 單片機(jī)開發(fā)工具.........................................................................147HT-IDE 集成開發(fā)環(huán)境............................................................................147盛群?jiǎn)纹瑱C(jī)仿真器(HT-ICE) ..................................................................149HT-ICE 接口卡.................................................................................149OTP 燒寫器.....................................................................................149OTP 適配卡.....................................................................................149系統(tǒng)配置..................................................................................................150HT-ICE 接口卡設(shè)置........................................................................151安裝..........................................................................................................153系統(tǒng)要求..........................................................................................153硬件安裝..........................................................................................153軟件安裝..........................................................................................154目錄v第六章 快速開始.....................................................................................159步驟一：建立一個(gè)新項(xiàng)目..............................................................159步驟二：將源程序文件加到項(xiàng)目中..............................................159步驟三：編譯項(xiàng)目..........................................................................159步驟四：燒寫OTP 單片機(jī).............................................................160步驟五：傳送程序與掩膜選項(xiàng)單至Holtek ..................................160附錄............................................................................................... 161附錄A 特性曲線圖...................................................................................163附錄B 封裝信息.......................................................................................173
上傳時(shí)間： 2013-10-18
上傳用戶：blacklee
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