The PCA9671 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plus(Fm+) family.The PCA9671 is a drop in upgrade for the PCF8575 providing higher I2C-bus speeds(1 MHz versus 400 kHz) so that the output can support PWM dimming of LEDs, higherI2C-bus DRIVE (30 mA versus 3 mA) so that many more devices can be on the bus withoutthe need for bus buffers, higher total package sink capacity (400 mA versus 100 mA) thatsupports having all 25 mA LEDs on at the same time and more device addresses (64versus 8) to allow many more devices on the bus without address conflicts.
上傳時間： 2013-10-12
上傳用戶：laomv123
The PCA9672 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9672 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWMdimming of LEDs, higher I2C-bus DRIVE (30 mA versus 3 mA) so that many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(200 mA versus 100 mA) that supports having all LEDs on at the same time and moredevice addresses (16 versus 8) are available to allow many more devices on the buswithout address conflicts.
上傳時間： 2013-10-23
上傳用戶：jasonheung
The PCA9673 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9673 is a drop in upgrade for the PCF8575 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWMdimming of LEDs, higher I2C-bus DRIVE (30 mA versus 3 mA) so that many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(400 mA versus 100 mA) that supports having all 25 mA LEDs on at the same time andmore device addresses (16 versus 8) are available to allow many more devices on the buswithout address conflicts.
上傳時間： 2013-10-29
上傳用戶：wkchong
The PCA9674/74A is a drop-in upgrade for the PCF8574/74A providing higher Fast-modePlus I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWMdimming of LEDs, higher I2C-bus DRIVE (30 mA versus 3 mA) so that many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(200 mA versus 100 mA) that supports having all LEDs on at the same time and moredevice addresses (64 versus 8) are available to allow many more devices on the buswithout address conflicts.
上傳時間： 2013-10-22
上傳用戶：wwwwwen5
該文介紹了開關磁阻電機的基本原理，設計了一種用80C196 單片機實現的開關磁阻電機驅動系統，并對該開關磁阻電機調速系統的性能進行了實驗與測試，實驗證明該系統運行可靠。開關磁阻電動機是磁阻電動機與電子開關驅動控制器組成的控制裝置，又稱開關磁阻電機驅動系統（Switched Reluctance Motor DRIVE,簡稱SRD）。電機結構簡單堅固，運行可靠，系統具有啟動轉矩高、啟動電流低、調速范圍寬、運行效率高，特別適用于頻繁啟停及正反轉運行，使得SRD 成為交，直流電機驅動系統以及無刷直流電機驅動系統的強有力競爭者。目前，SRD 已用于多個領域，如：電動車驅動、家用電器、伺服與調速系統等許多領域。本文設計了一個以 80C196 單片機為控制核心的SRD 的控制系統，充分利用了SRD 電機控制方式靈活的特點，采用數字化控制系統對SR 電機進行控制，簡化了硬件電路，提高了系統的可靠性。
上傳時間： 2013-11-05
上傳用戶：18711024007
ICCAVR軟件中文使用說明書:一ImageCraft 的ICC AVR 編譯器安裝1 運行光盤上的SETUP.EXE 程序進行安裝方法一a 打開我的電腦b 打開光盤驅動器所對應的盤符c 雙擊光盤中文件SETUP.EXE 的圖標d 按照屏幕提示選定一個安裝路徑后進行安裝方法二a 在開始菜單中選擇運行項目b 在運行對話框中填入DRIVE:\setup.exe注意DRIVE 對應你的機器中的光盤驅動器盤符c 按確定鍵開始安裝d 其余同方法一注意按上述方法進行安裝后得到的是一個只可以使用30 天的未注冊版對正式版用戶還要進行第二步的注冊才可得到一個無時間限制的正式版ICC AVR 正式版分標準版和專業版在標準版中有一些功能限制如代碼的壓縮工程和文件的配置檢查在標準版中不可以使用
上傳時間： 2013-10-23
上傳用戶：hwl453472107
ICCAVR教程，ICCAVR軟件中文件使用說明書，雙龍公司翻譯整理。建議大家認真學習一下這個資料，內容不是很長，看了之后會對ICCAVR有更深的了解。 ImageCraft ICCAVR 的中文使用說明翻譯 詹衛前一ImageCraft 的ICC AVR 編譯器安裝1 運行光盤上的SETUP.EXE 程序進行安裝方法一a 打開我的電腦b 打開光盤驅動器所對應的盤符c 雙擊光盤中文件SETUP.EXE 的圖標d 按照屏幕提示選定一個安裝路徑后進行安裝方法二a 在開始菜單中選擇運行項目b 在運行對話框中填入DRIVE:\setup.exe注意DRIVE 對應你的機器中的光盤驅動器盤符c 按確定鍵開始安裝d 其余同方法一注意按上述方法進行安裝后得到的是一個只可以使用30 天的未注冊版對正式版用戶還要進行第二步的注冊才可得到一個無時間限制的正式版ICC AVR 正式版分標準版和專業版在標準版中有一些功能限制如代碼的壓縮工程和文件的配置檢查在標準版中不可以使用
上傳時間： 2013-11-05
上傳用戶：zhyfjj
基于USB接口的數據采集模塊的設計與實現Design and Implementation of USB-Based Data Acquisition Module路 永 伸(天津科技大學電子信息與自動化學院，天津300222)摘要文中給出基于USB接口的數據采集模塊的設計與實現。硬件設計采用以Adpc831與PDIUSBDI2為主的器件進行硬件設計，采用WinDRIVEr開發USB驅動，并用Visual C十十6.0對主機軟件中硬件接口操作部分進行動態鏈接庫封裝。關鍵詞USB 數據采集Adpc831 PDNSBDI2 WinDRIVEr動態鏈接庫Abstract T hed esigna ndim plementaitono fU SB-BasedD ataA cquisiitonM oduleis g iven.Th ec hips oluitonm ainlyw ithA dpc831a ndP DTUSBD12i sused for hardware design. The USB DRIVE is developed場WmDRIVEr, and the operation on the hardware interface is packaged into Dynamic Link Libraries場Visual C++6.0. Keywords USB DataA cquisition Adttc831 PDfUSBD12 WinDRIVEr0 引言US B總 線 是新一代接口總線，最初推出的目的是為了統一取代PC機的各類外設接口，迄今經歷了1.0,1.1與2.0版本3個標準。在國內基于USB總線的相關設計與開發也得到了快速的發展，很多設計者從各自的應用領域，用不同方案設計出了相應的裝置[1,2]。數據采集是工業控制中一個普遍而重要的環節，因此開發基于USB接口的數據采集模塊具有很強的現實應用意義。雖然 US B總線標準已經發展到2.0版本，但由于工業控制現場干擾信號的情況比較復雜，高速數據傳輸的可靠性不容易被保證，并且很多場合對數據采集的實時性要求并不高，開發2.0標準產品的成本又較1.1標準產品高，所以筆者認為，在工業控制領域，目前開發基于USB總線1.1標準實現的數據采集模塊的實用意義大于相應2.0標準模塊。
上傳時間： 2013-10-23
上傳用戶：q3290766
Abstract: Designers who must interface 1-Wire temperature sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to DRIVE a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wire slave devices. The systemimplements a 1-Wire master connected to a UART and outputs temperature to a PC from the DS28EA00 temperaturesensor. In addition, high/low alarm outputs are displayed from the DS28EA00 PIO pins using LEDs.
標簽： PicoBlaze Create Master Xilinx
上傳時間： 2013-11-05
上傳用戶：a6697238
According to CIBC World Markets, Equity Research, theFlat Panel Display (FPD) industry has achieved sufficientcritical mass for its growth to explode. Thus, it can nowattract the right blend of capital investments and R&Dresources to DRIVE technical innovation toward continuousimprovement in view quality, manufacturing efficiency,and system integration. These in turn are sustainingconsumer interest, penetration, revenue growth, and thepotential for increasing long-term profitability for industryparticipants. CIBC believes that three essential conditionsare now converging to DRIVE the market forward
上傳時間： 2013-10-18
上傳用戶：日光微瀾
