I/O并行口直接驅動LED顯示1. 實驗任務 如圖13所示，利用AT89S51單片機的P0端口的P0.0－P0.7連接到一個共陰數碼管的a－h的筆段上，數碼管的公共端接地。在數碼
上傳時間： 2013-06-15
上傳用戶：kytqcool
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，并按照流程編寫了一個“Infineon XC164CM”的閃燈測試程序
上傳時間： 2013-07-13
上傳用戶：牛布牛
]本文介紹了如何利用CPLD(復雜可編程邏輯器件)與單片機的結合實現并行I／\r\nO(輸入／輸出)接口的擴展。該設計與用8255做并行I／O接口相比，與單片機軟件完全兼容，\r\n同時擁有速度快，功耗低，價格便宜，使用靈活等特點
上傳時間： 2013-08-14
上傳用戶：xa_lgy
:針對現場可編程門陣列(FPGA)芯片的特點,研究FPGA中雙向端口I/O的設計,同時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計方法,選用Xilinx的Spartan2E芯片設計一個多通道圖像信號處理系統。
上傳時間： 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.
上傳時間： 2013-11-23
上傳用戶：rocketrevenge
常用主板I/O芯片簡介
上傳時間： 2013-11-10
上傳用戶：yupw24
〔摘要〕介紹了幾種通過單片機1/O口鍵盤擴展的方法。主要探討了幾種采用較少的1/O口實現較多按鍵的方法。〔關鍵詞〕單片機;1/O口;鍵盤擴展
上傳時間： 2013-10-31
上傳用戶：jkhjkh1982
各系列I/O型單片機使用手冊 第一部份 單片機概論 1第一章 硬件結構 3簡介3特性4技術特性4內核特性4周邊特性5選擇表6系統框線圖7引腳分配8引腳說明10極限參數15直流電氣特性16交流電氣特性18EEPROM 交流電氣特性18系統結構圖19時序和流水線結構(Pipelining) 19程序計數器21堆棧23算術及邏輯單元 – ALU24MTP 程序存儲器25結構25特殊向量26查表27查表程序范例28在線燒寫30數據存儲器31結構31通用數據存儲器32專用數據存儲器32
上傳時間： 2013-10-15
上傳用戶：yimoney
I/O 型單片機使用手冊 目錄 間接尋址寄存器 – IAR, IAR0, IAR1 .............................................35間接尋址指針 – MP, MP0, MP1 ......................................................35存儲區指針 – BP .........................................................................36累加器 – ACC...................................................................................37程序計數器低字節寄存器 – PCL....................................................37表格寄存器 – TBLP,TBHP,TBLH....................................................37看門狗定時寄存器 – WDTS............................................................38狀態寄存器 – STATUS.....................................................................38中斷控制寄存器 – INTC,INTC0,INTC1 .........................................39定時/計數寄存器...............................................................................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....................................................................................45定時/計數器..............................................................................................46配置定時/計數器輸入時鐘源...........................................................47定時/計數寄存器 – TMR, TMR0,TMR0L/TMR0H,TMR1L/TMR1H,TMR2.....................................................................49定時/計數控制寄存器 – TMRC,TMR0C,TMR1C,TMR2C............50定時器模式........................................................................................53事件計數器模式................................................................................53脈沖寬度測量模式............................................................................54可編程分頻器(PFD)和蜂鳴器的應用..............................................55預分頻器(Prescaler)...........................................................................56輸入/輸出接口...................................................................................56編程注意事項....................................................................................57定時/計數器應用范例.......................................................................57中斷............................................................................................................59中斷寄存器........................................................................................59中斷優先權........................................................................................62外部中斷............................................................................................63定時/計數器中斷...............................................................................64UART 中斷........................................................................................64編程注意事項....................................................................................65復位和初始化............................................................................................66復位....................................................................................................66目錄iii異步串行口——UART............................................................................74UART 特性..........................................................................................74UART 外部引腳..................................................................................74數據發送.............................................................................................75UART 狀態控制寄存器......................................................................75波特率發生器.....................................................................................79UART 設置與控制..............................................................................81UART 發送器......................................................................................83UART 接收器......................................................................................84接收錯誤處理.....................................................................................85接收中斷圖解.....................................................................................86地址檢測模式.....................................................................................86暫停模式下的UART 功能.................................................................87UART 應用范例.................................................................................87振蕩器........................................................................................................89系統時鐘配置....................................................................................89系統晶體/陶瓷振蕩器.......................................................................89系統電阻電容振蕩器........................................................................90內部系統電阻電容振蕩器................................................................90RTC 振蕩器........................................................................................91看門狗定時振蕩器............................................................................91暫停和喚醒................................................................................................92暫停.....................................................................................................92進入暫停.............................................................................................92靜態電流.............................................................................................92喚醒....................................................................................................92看門狗定時器............................................................................................94掩膜選項....................................................................................................96應用電路....................................................................................................97第二部份 程序語言.....................................................................99第二章 指令集介紹.................................................................................101指令集......................................................................................................101指令周期..........................................................................................101數據的傳送......................................................................................101算術運算..........................................................................................102邏輯和移位運算..............................................................................102分支和控制的轉換..........................................................................102位運算..............................................................................................102查表運算..........................................................................................103其它運算..........................................................................................103指令設定一覽表......................................................................................104慣例..................................................................................................104I/O 型單片機使用手冊iv第三章 指令定義.....................................................................................107第四章 匯編語言和編譯器.....................................................................121常用符號..................................................................................................121語句語法..................................................................................................122名稱..................................................................................................122操作項..............................................................................................122操作數項..........................................................................................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數據定義偽指令..............................................................................130宏指令..............................................................................................132匯編語言指令..........................................................................................136名稱..................................................................................................136助記符..............................................................................................136操作數、運算子和表達式..............................................................136其它..........................................................................................................139前置引用..........................................................................................139局部標號..........................................................................................139匯編語言保留字..............................................................................140編譯器選項..............................................................................................141編譯列表文件格式..................................................................................141源程序列表......................................................................................141編譯總結..........................................................................................142其它..................................................................................................142第三部份 開發工具................................................................... 145第五章 單片機開發工具.........................................................................147HT-IDE 集成開發環境............................................................................147盛群單片機仿真器(HT-ICE) ..................................................................149HT-ICE 接口卡.................................................................................149OTP 燒寫器.....................................................................................149OTP 適配卡.....................................................................................149系統配置..................................................................................................150HT-ICE 接口卡設置........................................................................151安裝..........................................................................................................153系統要求..........................................................................................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：建立一個新項目..............................................................159步驟二：將源程序文件加到項目中..............................................159步驟三：編譯項目..........................................................................159步驟四：燒寫OTP 單片機.............................................................160步驟五：傳送程序與掩膜選項單至Holtek ..................................160附錄............................................................................................... 161附錄A 特性曲線圖...................................................................................163附錄B 封裝信息.......................................................................................173
上傳時間： 2013-10-18
上傳用戶：blacklee
HOLTEK I/O 8-Bit MTP輸入/輸出型八位可多次編程單片機初學者工具使用手冊 MTP(可多次燒寫)使用者工具是一個認識HOLTEK 8 位微控制器的快捷便利、低成本途徑。它也可以作為MTP 編程器和驗證板。
上傳時間： 2013-10-08
上傳用戶：xiaodu1124
