ISP 型單片機(jī)實驗板學(xué)習(xí)單片機(jī)離不開實驗，以往單片機(jī)的實驗往往依賴于仿真機(jī)和單片機(jī)學(xué)習(xí)系統(tǒng)，價格昂貴，至使學(xué)習(xí)單片機(jī)的門檻很高，很多人不能跨入單片機(jī)學(xué)習(xí)的大門。近年來，隨著FLASH型單片機(jī)的廣泛應(yīng)用，采用軟件模擬加寫片驗證成為一種經(jīng)濟(jì)實用的實驗方法，尤其是隨著單片機(jī)技術(shù)的發(fā)展，很多單片機(jī)都具有了ISP 功能，只要一根下載線即可以編程。STC 單片機(jī)更是將其ISP 功能發(fā)揮極致，只要有RS232 接口，不需任何其他電路即可實現(xiàn)ISP 功能。。多年前，本網(wǎng)站為單片機(jī)愛好者設(shè)計了實驗電路板，并公開了全部的軟、硬件資料，廣受愛好者歡迎，很多人使用這塊實驗電路板學(xué)習(xí)并由此入門，同時網(wǎng)絡(luò)上也出現(xiàn)了很多同類功能的實驗電路板，為廣大愛好者學(xué)習(xí)單片機(jī)創(chuàng)造了良好的條件。隨著技術(shù)的發(fā)展，本站在原實驗電路板的基礎(chǔ)上，開發(fā)了一塊功能更強(qiáng)的實驗電路板，該板除保留了原板廣受好評的部分外，新增了更多的功能。最大的特點是具有仿真能力，不再需要昂貴的仿真機(jī)，即可使用Keil 軟件進(jìn)行仿真調(diào)試，使得學(xué)習(xí)成本大為下降。板上安裝了6 位數(shù)碼管（原板為2 位數(shù)碼管）；8 個發(fā)光二極管；四個按鈕開關(guān)；一個簡單的音響電路；一個用于計數(shù)實驗的振蕩器；At24CXXX 類芯片插座；X5045 芯片插座；RS232 串行接口。
標(biāo)簽： ISP 單片機(jī)實驗板
上傳時間： 2013-10-24
上傳用戶：dragonhaixm
PIC 單片機(jī)的組成習(xí)題解答 解答部分1. PIC 單片機(jī)指令的執(zhí)行過程遵循著一種全新哈佛總線體系結(jié)構(gòu)的原則，充分利用了計算機(jī)系統(tǒng)在程序存儲器和數(shù)據(jù)存儲器之間地址空間的相互獨立性，取指過程和執(zhí)行指令過程可以流水線操作同時進(jìn)行。因此，當(dāng)PIC 時鐘頻率為4MHZ時，執(zhí)行一條非轉(zhuǎn)移類指令需要4 個系統(tǒng)時鐘周期，即1us,但其指令執(zhí)行的真實時間應(yīng)為2us(在執(zhí)行n—1 條指令時取第n 條指令，然后執(zhí)行第n 條指令)。所以選項B 正確2. 端口RE 共有3 個引腳RE0~RE2，它們除了用做普通I/O 引腳和第5~7 路模擬信號輸入引腳外，還依次分別承擔(dān)并行口讀出/寫入/片選控制端引腳。A． 對。讀出/寫入（REO~RE1）。B．錯。同步串行的相關(guān)引腳與端口C 有關(guān)。C．錯。通用異步/同步串行的相關(guān)引腳與端口C有關(guān)。D． 錯。CCP模塊的相關(guān)引腳也是與端口C有關(guān)。所以選項A正確。3. 上電延時電路能提供一個固定的72ms 上電延時，從而使VDD有足夠的時間上繁榮昌盛到單片機(jī)合適的工作電壓。所以選項B 正確。
上傳時間： 2013-11-09
上傳用戶：glxcl
基于AT89S52的紅外遙控電子密碼鎖設(shè)計 本設(shè)計以單片機(jī)AT89S52作為密碼鎖監(jiān)控裝置的檢測和控制核心，分為主機(jī)和從機(jī)，實現(xiàn)鑰匙信息在主機(jī)上的初步認(rèn)證注冊、密碼信息的加密、紅外傳輸、鑰匙丟失報廢等功能。根據(jù)51單片機(jī)之間的串行通信原理，利用紅外來傳輸，這便于對密碼信息的隨機(jī)加密和保護(hù)。而且采用紅外遙控相對于機(jī)械鎖和鍵盤輸入的電子密碼鎖具有較高的優(yōu)勢。如紅外線發(fā)射裝置采用紅外發(fā)光二極管，遙控發(fā)射器易于小型化且價格低廉；采用數(shù)字信號編碼和二次調(diào)制方式，不僅可以實現(xiàn)多路信息的控制，增加遙控功能，提高信號傳輸?shù)目垢蓴_性，減少錯誤動作，而且功率消耗低；紅外線不會向室外泄露，不會產(chǎn)生信號串?dāng)_；反應(yīng)速度快、傳輸效率高、工作穩(wěn)定可靠等。所以紅外線遙控是目前使用最廣泛的一種通信和遙控手段。軟件設(shè)計采用自上而下的模塊化設(shè)計思想，以使系統(tǒng)朝著分布式、小型化方向發(fā)展，增強(qiáng)系統(tǒng)的可擴(kuò)展性和運行的穩(wěn)定性。測試結(jié)果表明，本系統(tǒng)各項功能已達(dá)到本設(shè)計的所有要求。
上傳時間： 2013-10-18
上傳用戶：icarus
Stellaris(群星)單片機(jī)的片上FLASH編程(英) INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH LUMINARY MICRO PRODUCTS. NO LICENSE,EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THISDOCUMENT. EXCEPT AS PROVIDED IN LUMINARY MICRO’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS,LUMINARY MICRO ASSUMES NO LIABILITY WHATSOEVER, AND LUMINARY MICRO DISCLAIMS ANY EXPRESS OR IMPLIEDWARRANTY, RELATING TO SALE AND/OR USE OF LUMINARY MICRO’S PRODUCTS INCLUDING LIABILITY OR WARRANTIESRELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHTOR OTHER INTELLECTUAL PROPERTY RIGHT. LUMINARY MICRO’S PRODUCTS ARE NOT INTENDED FOR USE IN MEDICAL,LIFE SAVING, OR LIFE-SUSTAINING APPLICATIONS.
標(biāo)簽： Stellaris FLASH 單片機(jī) 編程
上傳時間： 2013-10-22
上傳用戶：JamesB
Stellaris(群星)單片機(jī)加上32KB串行SRAM(英) INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH LUMINARY MICRO PRODUCTS. NO LICENSE,EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THISDOCUMENT. EXCEPT AS PROVIDED IN LUMINARY MICRO’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS,LUMINARY MICRO ASSUMES NO LIABILITY WHATSOEVER, AND LUMINARY MICRO DISCLAIMS ANY EXPRESS OR IMPLIEDWARRANTY, RELATING TO SALE AND/OR USE OF LUMINARY MICRO’S PRODUCTS INCLUDING LIABILITY OR WARRANTIESRELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHTOR OTHER INTELLECTUAL PROPERTY RIGHT. LUMINARY MICRO’S PRODUCTS ARE NOT INTENDED FOR USE IN MEDICAL,LIFE SAVING, OR LIFE-SUSTAINING APPLICATIONS.
標(biāo)簽： Stellaris SRAM 32 KB
上傳時間： 2013-11-22
上傳用戶：lixqiang
LM3S系列單片機(jī)串行(UART)升級方案解決 介紹LM3S系列單片機(jī)如何通過串行（UART）接口更新用戶程序。
標(biāo)簽： LM3S UART 單片機(jī)串行 方案
上傳時間： 2013-12-17
上傳用戶：ynwbosss
如何使用S12X MCU 上的外設(shè)協(xié)處理器XGATE XGATE 是一個16 位的精簡指令集內(nèi)核（見圖1-1 XGATE 編程模式）。內(nèi)核擁有8 個16 位通用寄存器R0～R7，1 個程序計數(shù)器PC，一個4 位的條件碼寄存器CCR。其中R0 恒為0，可用于對變量的快速清零或置位.
上傳時間： 2013-10-18
上傳用戶：wangrong
單片機(jī)在鍵盤上的應(yīng)用 鍵盤擔(dān)負(fù)著向系統(tǒng)發(fā)出命令和查詢系統(tǒng)工作狀態(tài)的重任。由于各種單片機(jī)所提供的片內(nèi)外資源不同,所以在進(jìn)行鍵盤擴(kuò)展時其硬件電路的形式也多種多樣。文中介紹了利用單片機(jī)內(nèi)部的A /D轉(zhuǎn)換通道、并行口以及片外擴(kuò)展芯片等方法擴(kuò)展鍵盤的硬件電路及電路工作原理,并給出了部分程序。
上傳時間： 2013-11-11
上傳用戶：silenthink
I/O 型單片機(jī)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(qū)指針 – BP .........................................................................36累加器 – ACC...................................................................................37程序計數(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/計數(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....................................................................................45定時/計數(shù)器..............................................................................................46配置定時/計數(shù)器輸入時鐘源...........................................................47定時/計數(shù)寄存器 – TMR, TMR0,TMR0L/TMR0H,TMR1L/TMR1H,TMR2.....................................................................49定時/計數(shù)控制寄存器 – TMRC,TMR0C,TMR1C,TMR2C............50定時器模式........................................................................................53事件計數(shù)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(yīng)用..............................................55預(yù)分頻器(Prescaler)...........................................................................56輸入/輸出接口...................................................................................56編程注意事項....................................................................................57定時/計數(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/計數(shù)器中斷...............................................................................64UART 中斷........................................................................................64編程注意事項....................................................................................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(yīng)用范例.................................................................................87振蕩器........................................................................................................89系統(tǒng)時鐘配置....................................................................................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看門狗定時器............................................................................................94掩膜選項....................................................................................................96應(yīng)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(shù)據(jù)的傳送......................................................................................101算術(shù)運算..........................................................................................102邏輯和移位運算..............................................................................102分支和控制的轉(zhuǎn)換..........................................................................102位運算..............................................................................................102查表運算..........................................................................................103其它運算..........................................................................................103指令設(shè)定一覽表......................................................................................104慣例..................................................................................................104I/O 型單片機(jī)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(shù)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(shù)據(jù)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(shù)、運算子和表達(dá)式..............................................................136其它..........................................................................................................139前置引用..........................................................................................139局部標(biāo)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(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盛群單片機(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(jī).............................................................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
Cx51 編譯器用戶手冊 中文完整版 本手冊講述對8051 的目標(biāo)環(huán)境如何使用Cx51 優(yōu)化C 編譯器編譯C 程序Cx51 編譯器包可以用在所有的8051 系列處理器上可以在WINDOWS 32 位命令行中執(zhí)行本手冊假定你熟悉WINDOWS 操作系統(tǒng)知道如何編程8051 處理器并會用C 語言編程注意本手冊用條件窗口來指明32 位WINDOWS 版本是WINDOWS95 WINDOWS98 WINDOWSME WINDOWS NT WINDOWS 2000 或WINDWOS XP如果你對C 編程有問題或者你想知道C 語言編程的更多信息可參考16 頁的關(guān)于C語言的書手冊中討論的許多例子和描述是從WINDOWS 命令提示符下調(diào)用的這對在一個集成環(huán)境如μVision2 中運行Cx51 的情況是不適用的本手冊中的例子是通用的可以應(yīng)用到所有編程環(huán)境
上傳時間： 2013-10-28
上傳用戶：gundamwzc
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