在需要實(shí)時(shí)大量輸入漢字的顯示控制處理應(yīng)用中，利用傳統(tǒng)單片機(jī)實(shí)現(xiàn)顯示控制的設(shè)計(jì)方法是較難實(shí)現(xiàn)的。帶漢字字庫的液晶模塊的使用使得小容量ROM單片機(jī)的大量漢字信息輸入與顯示成為可能。提出了針對(duì)漢字字庫編碼的二級(jí)索引拼音輸入檢索方法,介紹了以ST7920作為控制器的帶漢字字庫的液晶顯示模塊的接口方法及漢字顯示和控制原理，給出了通用計(jì)算機(jī)鍵盤在單片機(jī)中的串行接口，采用該技術(shù)可大大增強(qiáng)單片機(jī)的漢字輸入功能。為小容量ROM單片機(jī)的大批量漢字信息處理提供了一種漢字輸入解決方案。 Abstract: It is difficult to realize Chinese characters input method based on the embedded system by using the traditional design method of display control. It is possible to input and display Chinese characters based on the embedded system with the ROM of small content by using the LCD module with Chinese characters.Chinese characters input method of the quadric index recall in allusion to Chinese characters code is brought forward.The interface and the principle of Chinese characters display control based on the LCD module controlled with the ST7920 is introduced too.The serial interface of the computer keyboard in common use and the embedded system is given at the same time. It can enhance the embedded system function of Chinese characters input by using this TECHNOLOGY, and provide a kind of Chinese characters input scheme for the embedded system with small capacity ROM.
上傳時(shí)間： 2013-11-19
上傳用戶：jhksyghr
用戶對(duì)消費(fèi)器和工業(yè)品人機(jī)界面的強(qiáng)勁需求使液晶顯示產(chǎn)品產(chǎn)場(chǎng)迅速升溫。為滿足這一市場(chǎng)需求，MICROCHIP TECHNOLOGY推出了一系列新型PIC單片機(jī)。
上傳時(shí)間： 2013-11-16
上傳用戶：siguazgb
Important Notice SUNPLUS INNOVATION TECHNOLOGY INC. reserves the right to change this documentation without prior notice. Information provided by SUNPLUS INNOVATION TECHNOLOGY INC. is believed to be accurate and reliable. However, SUNPLUS INNOVATION TECHNOLOGY INC.makes no warranty for any errors which may appear in this document. Contact SUNPLUS INNOVATION TECHNOLOGY INC.to obtain the latest version of device specifications before placing your order. No responsibility is assumed by SUNPLUS INNOVATION TECHNOLOGY INC. for any infringement of patent or other rights of third parties which may result from its use. In addition, SUNPLUSIT products are not authorized for use as critical components in life support systems or aviation systems, where a malfunction or failure of the product may reasonably be expected to result in significant injury to the user, without the express written approval of SunplusIT
標(biāo)簽： SUNPLUSIT Q-Writer 編程工具 使用說明書
上傳時(shí)間： 2013-10-13
上傳用戶：brain kung
胰島素泵的設(shè)計(jì) MPLAB IDE是一種在PC 機(jī)上運(yùn)行的軟件，用來為Microchip TECHNOLOGY系列單片機(jī)開發(fā)應(yīng)用程序。由于它提供了一種單一的集成環(huán)境來為嵌入式單片機(jī)開發(fā)程序代碼，因此被稱為集成開發(fā)環(huán)境或IDE，所有軟件開發(fā)任務(wù)都可以在MPLAB IDE下完成，包括編輯、編譯、調(diào)試程序和下載。MPLAB IDE提供了一個(gè)統(tǒng)一的開發(fā)平臺(tái)，用于所有Microchip TECHNOLOGY處理器系統(tǒng)。 本系統(tǒng)的軟件設(shè)計(jì)開發(fā)采用C語言。C語言的可移植性很高，并且可讀性很好。軟件設(shè)計(jì)是通過各個(gè)模塊的編程設(shè)計(jì)來實(shí)現(xiàn)的。
上傳時(shí)間： 2013-10-08
上傳用戶：哈哈haha
用C18編譯器進(jìn)行Microwire串行EEPROM與PIC18單片機(jī)的接口設(shè)計(jì) AN1004中文資料 目前市場(chǎng)上有許多種單片機(jī)用在嵌入式控制系統(tǒng)設(shè)計(jì)中，這些嵌入式控制系統(tǒng)中的很大一部分都要用到非易失性存儲(chǔ)器。由于串行EEPROM 具有封裝尺寸小，存儲(chǔ)容量靈活，對(duì)I/O 引腳要求低，和低功耗低成本等特點(diǎn)，已成為非易失性存儲(chǔ)器的首選。 為了滿足市場(chǎng)需求， Microchip TECHNOLOGY 已經(jīng)推出了一整套符合工業(yè)標(biāo)準(zhǔn)的串行EEPROM，覆蓋了2 線式（I2C™）、3 線式（Microwire）和SPI 通信標(biāo)準(zhǔn)，并提供了不同的存儲(chǔ)容量、工作電壓范圍和封裝形式。
標(biāo)簽： Microwire EEPROM C18 PIC
上傳時(shí)間： 2013-10-22
上傳用戶：crazyer
Although Stellaris microcontrollers have generous internal SRAM capabilities, certain applicationsmay have data storage requirements that exceed the 8 KB limit of the Stellaris LM3S8xx seriesdevices. Since microcontrollers do not have an external parallel data-bus, serial memory optionsmust be considered. Until recently, the ubiquitous serial EEPROM/flash device was the only serialmemory solution. The major limitations of EEPROM and flash TECHNOLOGY are slow write speed, slowerase times, and limited write/erase endurance.Recently, serial SRAM devices have become available as a solution for high-speed dataapplications. The N256S08xxHDA series of devices, from AMI Semiconductor, offer 32 K x 8 bits oflow-power data storage, a fast Serial Peripheral Interface (SPI) serial bus, and unlimited write cycles.The parts are available in 8-pin SOIC and compact TSSOP packages.
標(biāo)簽： Adding Serial SRAM 32
上傳時(shí)間： 2013-10-14
上傳用戶：cxl274287265
本文依據(jù)集成電路設(shè)計(jì)方法學(xué)，探討了一種基于標(biāo)準(zhǔn)Intel 8086 微處理器的單芯片計(jì)算機(jī)平臺(tái)的架構(gòu)。研究了其與SDRAM，8255 并行接口等外圍IP 的集成，并在對(duì)AMBA協(xié)議和8086 CPU分析的基礎(chǔ)上，采用遵從AMBA傳輸協(xié)議的系統(tǒng)總線代替?zhèn)鹘y(tǒng)的8086 CPU三總線結(jié)構(gòu)，搭建了基于8086 IP 軟核的單芯片計(jì)算機(jī)系統(tǒng)，并實(shí)現(xiàn)了FPGA 功能演示。關(guān)鍵詞：微處理器； SoC；單芯片計(jì)算機(jī)；AMBA 協(xié)議 Design of 8086 CPU Based Computer-on-a-chip System（School of Electrical Engineering and Automation, Heifei University of TECHNOLOGY, Hefei, 230009,China）Abstract: According to the IC design methodology, this paper discusses the design of one kind of Computer-on-a-chip system architecture, which is based on the standard Intel8086 microprocessor,investigates how to integrate the 8086 CPU and peripheral IP such as, SDRAM controller, 8255 PPI etc. Based on the analysis of the standard Intel8086 microprocessor and AMBA Specification,the Computer-on-a-chip system based on 8086 CPU which uses AMBA bus instead of traditional three-bus structure of 8086 CPU is constructed, and the FPGA hardware emulation is fulfilled.Key words: Microprocessor; SoC; Computer-on-a-chip; AMBA Specification
標(biāo)簽： 8086 CPU 單芯片 計(jì)算機(jī)系統(tǒng)
上傳時(shí)間： 2013-12-27
上傳用戶：kernor
基于PIC單片機(jī)的低功耗讀卡器硬件設(shè)計(jì):本文提出了一個(gè)完整的基于串口的智能讀卡器子系統(tǒng)設(shè)計(jì)方案并將其實(shí)現(xiàn)。讀卡器的設(shè)計(jì)突出了小型化的要求，全部器件使用貼片封裝。為了減小讀卡器的體積，設(shè)計(jì)中還使用了串口竊電的技術(shù)，使用串口信號(hào)線直接給讀卡器供電。為此，讀卡器使用了省電的設(shè)計(jì)，采用了省電的集成電路，并大膽簡(jiǎn)化了許多傳統(tǒng)的設(shè)計(jì)電路。關(guān)鍵字： 讀卡器， 單片機(jī)， 串口竊電 Abstract： This paper aims to put forward a complete design of Smart IC card reader based onSerial Port and propose the way of realizing it for the purpose of Network Security. SMD isadopted to make Smart IC reader smaller in this design. To reduce the volume of Smart ICreader， Serial Port powered TECHNOLOGY is employed to get power from the signal line of Serial Port. For this reason， low-power consumption components are adopted in the design and some traditional designs are simplified to reduce the power consumption.Keywords： Card Reader； Single-chip Computer； Serial Port Powered IC 卡系統(tǒng)保存了加密算法所需要的工作密鑰，供加密算法對(duì)網(wǎng)絡(luò)上傳輸?shù)臄?shù)據(jù)加密使用，是整個(gè)系統(tǒng)網(wǎng)絡(luò)安全的核心。在IC 卡子系統(tǒng)中，讀卡器是一個(gè)重要的部分。它起著管理IC卡、在IC 卡和PC或網(wǎng)絡(luò)計(jì)算機(jī)間傳遞數(shù)據(jù)的重要作用。本文以一片PIC單片機(jī)為核心完成了基于RS232 串口的讀卡器的硬件設(shè)計(jì)。
上傳時(shí)間： 2014-04-14
上傳用戶：wanghui2438
CAN與RS232轉(zhuǎn)換節(jié)點(diǎn)的設(shè)計(jì)與實(shí)現(xiàn) 介紹將CAN總線接口與RS232總線接口相互轉(zhuǎn)換的設(shè)計(jì)方法和2種總線電平轉(zhuǎn)換關(guān)系，實(shí)現(xiàn)CAN總線與各模塊的接口設(shè)計(jì)，制定了相應(yīng)的軟硬件設(shè)計(jì)方案，并給出軟件設(shè)計(jì)流程圖以及部分硬件設(shè)計(jì)原理圖。為CAN總線與RS232總線互聯(lián)提供了一種方法，對(duì)CAN總線與RS232總線接口設(shè)備的互聯(lián)和廣泛應(yīng)用的實(shí)現(xiàn)具有重要意義。關(guān)鍵詞：CAN總線；RS-232總線；串行通信Design and Realization of CAN and RS232 Transformation NodeZHOU Wei, CHENG Xiao-hong(Information Institute, Wuhan University of TECHNOLOGY, Wuhan 430070)【Abstract】This paper introduces one design method of the CAN bus interface and the RS232 bus interface interconversion, emphasizes two kindof bus level transformation relations, realizes the CAN bus and various modules connection design, formulates the design proposal of correspondingsoftware and hardware, and gives the flow chart of software design as well as the partial schematic diagram of hardware design. It providesonemethod for the CAN bus and the RS232 bus interconnection, has the vital significance to widespread application realization of the CAN busand theRS232 bus interface equipment interconnection.【Key words】CAN bus; RS-232 bus; serial communication
標(biāo)簽： CAN 232 RS 轉(zhuǎn)換
上傳時(shí)間： 2013-11-04
上傳用戶：leesuper
LTC1732 是LINEAR TECHNOLOGY 公司推出的鋰離子電池充電控制集成電路芯片。它具有電池插入檢測(cè)和自動(dòng)低壓電池充電功能。文章介紹了該芯片的結(jié)構(gòu)、特點(diǎn)、工作原理及應(yīng)用信息，給出了典型的應(yīng)用電路。 LTC1732 是LINEAR TECHNOLOGY 公司生產(chǎn)的鋰-離子（Li-離子）電池恒流/恒壓線性充電控制器。它也可以對(duì)鎳-鎘（NiCd）和鎳-氫（NiMH）電池恒流充電。其充電電流可通過外部傳感電阻器編程到7%（最大值）的精度。最終的浮動(dòng)電壓精度為1%。利用LTC1732 的SEL 端可為4.1V 或4.2V 電池充電。當(dāng)輸入電源撤消后，LTC1732 可自動(dòng)進(jìn)入低電流睡眠狀態(tài)，以使消耗電流下降到7μA。LTC1732 的內(nèi)部比較器用于檢測(cè)充電結(jié)束條件（C/10），而總的充電時(shí)間則是通過可編程計(jì)時(shí)器的外部電容來設(shè)置的。在電池完全放電后，控制器將自動(dòng)以規(guī)定電流的10%對(duì)被充電電池進(jìn)行慢速充電直到電池電壓超過2.457V。當(dāng)放電后的電池插入充電器或當(dāng)輸入電源接通時(shí)，LTC1732 將開始重新充電。另外，如果電池一直插入在充電器且在電池電壓降到3.8V（LTC1732-4）或4.05V（LTC1732-4.2）以下時(shí)，充電器也將開始重新充電。LTC1732 的其它主特點(diǎn)如下：●具有1%的預(yù)置充電電壓精度；●輸入電壓范圍4.5V～12V；●充電電流可編程控制；●具有C/10 充電電流檢測(cè)輸出；●可編程控制充電終端計(jì)時(shí)；●帶有低電壓電池自動(dòng)小電流充電模式；●可編程控制恒定電流接通模式；●具有電池插入檢測(cè)和自動(dòng)低壓電流充電功能；●帶有輸入電源（隔離適配器）檢測(cè)輸出；●LTC1732-4.2 型器件的再充電閾值電壓為4.05V；●LTC1732-4 型器件的再充電閾值電壓為3.8V。
上傳時(shí)間： 2013-11-12
上傳用戶：semi1981
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