The PCF8578 is a low power CMOS1 LCD row and column driver, designed to drive dotmatrix graphic displays at multiplex rates of 1:8, 1:16, 1:24 or 1:32. The device has40 outputs, of which 24 are programmable and configurable for the following ratios ofrows/columns: 32¤8, 24¤16, 16¤24 or 8¤32. The PCF8578 can function as a stand-alone LCDcontroller and driver for use in small systems. For larger systems it can be used inconjunction with up to 32 PCF8579s for which it has been optimized. Together these twodevices form a general purpose LCD dot matrix driver CHip set, capable of driving displaysof up to 40960 dots. The PCF8578 is compatible with most microcontrollers andcommunicates via a two-line bidirectional bus (I2C-bus). Communication overhead isminimized by a display RAM with auto-incremented addressing and display bankswitching.
上傳時間： 2013-10-23
上傳用戶：頂?shù)弥?/p>
為解決傳統(tǒng)可視倒車?yán)走_(dá)視頻字符疊加器結(jié)構(gòu)復(fù)雜，可靠性差，成本高昂等問題，在可視倒車?yán)走_(dá)設(shè)計中采用視頻字符發(fā)生器芯片MAX7456。該芯片集成了所有用于產(chǎn)生用戶定義OSD，并將其插入視頻信號中所需的全部功能，僅需少量的外圍阻容元件即可正常工作。給出了以MAX7456為核心的可視倒車?yán)走_(dá)的軟、硬件實現(xiàn)方案及設(shè)計實例。該方案具有電路結(jié)構(gòu)簡單、價格低廉、符合人體視覺習(xí)慣的特點。經(jīng)實際裝車測試，按該方案設(shè)計的可視倒車?yán)走_(dá)視場清晰、提示字符醒目、工作可靠，可有效降低駕駛員倒車時的工作強度、減少倒車事故的發(fā)生。 Abstract: A new video and text generation CHip，MAX7456，was used in the design of video parking sensor in order to simplify system structure，improve reliability and reduce cost. This CHip included all the necessary functions to generate user-defined OSDs and to add them into the video signals. It could be put into work with addition of just a small number of resistances and capacitors. This paper provided software and hardware implementation solutions and design example based on the CHip. The system had the characteristics of simplicity in circuit structure，lower cost，and comfort for the nature of human vision. Loading road test demonstrates high video and text display quality and reliable performance，which makes the driver easy to see backward and reduces chance of accidents.
標(biāo)簽： 7456 MAX 可視倒車 中的應(yīng)用
上傳時間： 2013-12-10
上傳用戶：qiaoyue
提出一種基于單片機AT89C51SND1C的MP3播放系統(tǒng)的設(shè)計方案。單片機集成了專用的解碼器，使用K9F1208閃存作為外存儲器，放音電路采用CS4330，存儲文件通過播放器上的USB接口設(shè)備從PC機上直接下載，液晶顯示采用LCD1602。方案設(shè)計簡單，性價比高，低功耗，易擴(kuò)展。由于采用的是通用單片機實現(xiàn)的，可以很容易地移植到其他微控制器系統(tǒng)中，有很強的市場競爭能力和實用價值。 Abstract: A MP3 player design based on microCHip AT89C51SND1C was presented, which used K9F1208 Flash CHip as the memory circuit and used CS4330 as play CHip. Storage files were download from PC through USB interfaces player on the device，and the LCD/602 was used as display screen. This system had characteristics of simple design,low power,easy expand，low cost and high recognition. Using of universual microCHip make it easy to transplant to other microcontrol system，and have strong market competitiom and practical value.
上傳時間： 2014-12-27
上傳用戶：佳期如夢
1 FEATURES· Single CHip LCD controller/driver· 1 or 2-line display of up to 24 characters per line, or2 or 4 lines of up to 12 characters per line· 5 ′ 7 character format plus cursor; 5 ′ 8 for kana(Japanese syllabary) and user defined symbols· On-CHip:– generation of LCD supply voltage (external supplyalso possible)– generation of intermediate LCD bias voltages– oscillator requires no external components (externalclock also possible)· Display data RAM: 80 characters· Character generator ROM: 240 characters· Character generator RAM: 16 characters· 4 or 8-bit parallel bus or 2-wire I2C-bus interface· CMOS/TTL compatible· 32 row, 60 column outputs· MUX rates 1 : 32 and 1 : 16· Uses common 11 code instruction set· Logic supply voltage range, VDD - VSS: 2.5 to 6 V· Display supply voltage range, VDD - VLCD: 3.5 to 9 V· Low power consumption· I2C-bus address: 011101 SA0.
標(biāo)簽： 2116 PCF LCD 驅(qū)動器芯片
上傳時間： 2013-11-08
上傳用戶：laozhanshi111
The CAT93C46 is a 1 kb Serial EEPROM memory device which isconfigured as either 64 registers of 16 bits (ORG pin at VCC) or 128registers of 8 bits (ORG pin at GND). Each register can be written (orread) serially by using the DI (or DO) pin. The CAT93C46 features aself−timed internal write with auto−clear. On−CHip Power−On Resetcircuit protects the internal logic against powering up in the wrongstate.
上傳時間： 2013-11-20
上傳用戶：ynzfm
本文介紹了基于AT89C52 單片機的自動水溫控制系統(tǒng)的設(shè)計及實現(xiàn)過程。該系統(tǒng)具有實時顯示、溫度測量、溫度設(shè)定并能根據(jù)設(shè)定值對環(huán)境溫度進(jìn)行調(diào)節(jié)實現(xiàn)控溫的目的以及達(dá)到上下限溫度報警功能，控制算法是基于數(shù)字PID 算法。關(guān)鍵詞 ：PID AT89C52 脈寬調(diào)制 實時 Abstract ： This article describes AT89C52 single-CHip microcomputer-basedautomatic water temperature control system design and implementation process. Thesystem has real-time display, temperature measurement, temperature settings and theenvironment in accordance with the temperature settings adjusted to achieve thepurpose of temperature control and reach the upper and lower limits of temperaturealarm function, the control algorithm is based on the digital PID algorithm.Keyword: PID AT89C52 PWM real time
上傳時間： 2013-10-10
上傳用戶：歸海惜雪
本章簡單介紹了單片機技術(shù)與SOC技術(shù)的發(fā)展，以及μPSD3200系列單片機的技術(shù)性能。 單片機是單片微型計算機（Single CHip Microcomputer）的簡稱，它的內(nèi)部包含有計算機的基本功能部件：中央處理器（CPU）、存儲器、定時/計數(shù)器、各種串/并行I/O接口電路等。因此，單片機只需要和適當(dāng)?shù)能浖巴獠吭O(shè)備相結(jié)合，便可成為一個單片機控制系統(tǒng)。 近年來，由于半導(dǎo)體技術(shù)和工藝的快速發(fā)展，以及針對各行各業(yè)的實際應(yīng)用需要，單片機的開發(fā)方面又出現(xiàn)了許多新的技術(shù)。SOC（SystemOnCHip，片上系統(tǒng)）等名詞日益被人們所熟悉和關(guān)注。
上傳時間： 2013-10-15
上傳用戶：jasonheung
什么是單片機？所謂單片機(Single CHip Microcomputer)，是指在一塊芯片中集成有中央處理器(CPU)、存儲器(RAM和ROM)、基本I/O接口以及定時器、記數(shù)器等部件，并具有獨立指令系統(tǒng)的智能器件，即在一塊芯片上實現(xiàn)一臺微型計算機的基本功能。特點是：體積小，控制功能強，性價比高等
上傳時間： 2013-10-08
上傳用戶：wushengwu
IntroductionAs CHip designers pack more functions into ICs,pin counts continue to grow and the space betweenpins keeps shrinking. Pin spacings of 0.5 mm and0.65 mm are not at all uncommon. The power ofthese new ICs is wonderful, to be sure, but trou-bleshooting them can be a chore because connect-ing scopes and logic analyzers has become muchmore difficult and less dependable.
標(biāo)簽： Agilent Probing Wedge High
上傳時間： 2013-10-22
上傳用戶：蔣清華嗯
單片機是單片微型計算機（SingleCHipMicrocomputer）的簡稱，它的內(nèi)部包含有計算機的基本功能部件：中央處理器（CPU）、存儲器、定時/計數(shù)器、各種串/并行I/O接口電路等。因此，單片機只需要和適當(dāng)?shù)能浖巴獠吭O(shè)備相結(jié)合，便可成為一個單片機控制系統(tǒng)。近年來，由于半導(dǎo)體技術(shù)和工藝的快速發(fā)展，以及針對各行各業(yè)的實際應(yīng)用需要，單片機的開發(fā)方面又出現(xiàn)了許多新的技術(shù)。SOC（System On CHip，片上系統(tǒng)）等名詞日益被人們所熟悉和關(guān)注。
上傳時間： 2013-10-10
上傳用戶：zhang97080564
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