針對51單片機系統中常用的A/D轉換器價格高、精度低的缺點,介紹TI公司的16 位的帶有I2C串行接口的A/D轉換器ADS1110的工作原理,給出ADS1110與AT89C51單片機系統的接口電路和軟件設計。實踐證明,ADS1110具有高性價比和實用性。 Abstract: According to the disadvantages of high expense and low accuracy of the general A/D converter used in MCS51 microchip system,the principle and working process of a high accuracy 16-bit A/D conversion ADS1110 which has I2C bus and belongs to TI Company are proposed here as well as the interface of ADS1110 to AT89C51 and software list.It is proved to be high performance index and practicability.
上傳時間: 2013-11-21
上傳用戶:gyq
以AVR單片機ATmega8和USB接口器件PDIUSBD12為核心,基于標準的USB1.1協議,設計一種通用USB接口模塊,以滿足嵌入式系統中對USB接口的需求。對模塊的硬件電路或單片機固件程序的硬件接口層稍加修改即可用于其他各種微處理器。該模塊可為各種嵌入式系統增加USB接口,實現與USB主機系統通信。 Abstract: Based on AVR microcontroller ATmega8 and USB interface chip PDIUSBD12, a general USB interface module is designed according to USB1.1 protocol for various requirements of embedded systems. Only with few modifications in circuit or hardware abstract layer of firmware, the module can be used on many types of microprocessors. All kinds of embedded systems can realize high speed and stable communication with USB host systems, owing to the facility of this module.
上傳時間: 2014-01-08
上傳用戶:趙云興
主要介紹了以PIC18F2480單片機為處理器,基于可編程多路開關檢測接口器件MC33993實現的車用多路開關檢測接口電路的設計。該設計克服了以往基于分立元件的檢測接口電路的弊端,簡化了接口電路設計,保證了車用開關工作的可靠性和安全性。 Abstract: The design of automotive multiple switch detection interface circuit based on MC33993 is introduced mainly which adopts PIC18F2480 single chip microprocessor.This circuit overcomes shortage of traditional design which contains many schism elements, and the application of MC33993 also predigests the whole design of interface circuit and guarantees the dependability and security of the switch.
上傳時間: 2013-11-19
上傳用戶:star_in_rain
介紹了點型光電感煙探測器的工作原理,闡述了PIC16F676單片機的特殊功能,同時給出了該功能在探測器設計中的應用方法,最后給出了基于PIC16F676單片機設計的探測器的硬件構成和軟件程序。 Abstract: To begin with ,the principle of point type optical smoke detector is simply introduced and then the spe-cific functions of PIC16F676 are emphatically illuminated and it is also expounded that how to apply the specific functions in design of the detector.Furthermore the hardware and software design of detector are provided.
上傳時間: 2013-11-18
上傳用戶:hanwudadi
摘 要: 介紹了單片機控制的半導體激光器的穩光強器,系統地闡述了其工作原理、硬件及軟件設計。實驗測得:在室溫條件下,穩光強器6h輸出光強的穩定度達到0.28%。關鍵詞: 穩光強器;半導體激光器;單片機
上傳時間: 2013-10-15
上傳用戶:三人用菜
摘要:介紹了采取專用電平轉換芯片MAX232實現PC機與MCS51單片機之間的串行通信的方法.通過對系統的通信方式選擇89C51通信波特率的設置、通信的設置,以及對接口電路的軟件和硬件的設計分析,展示了該電路的實用性.關鍵詞:微處理器;PC機;串行通信;RS-232接口;MAX232芯片
上傳時間: 2014-01-22
上傳用戶:shizhanincc
AVR單片機及嵌入式系統--單片機原理及接口技術
上傳時間: 2014-11-08
上傳用戶:yanyangtian
摘要:目前單片機應用系統中顯示接口一般是采用七段LED,只能顯示一些簡單的字符,滿足不了實際應用要求。介紹了中文圖形液晶顯示模塊LCMI2832ZK的主要特點、管腳功能及使用方法,并給出了如何利用LCMI2832ZK模塊為AT89C2051單片機擴展漢字接13的應用實例。調試結果表明此方法簡單可行,可作為單片機漢字顯示接口的一般方法。只要簡單修改接口電路,此模塊也可以用于其他型號的單片機。關鍵詞:單片機;漢字顯示;接口技術
上傳時間: 2013-10-29
上傳用戶:ynzfm
摘要:提出一種全新的利用鍵盤接口實現單片機系統和PC機通信的方案,介紹了鍵盤與PC機通信的原理,并成功地應用于實際系統。該方案為外部單片機系統與3-機通信提供了一條有效的途徑。關鍵詞:鍵盤接口 單片機系統 時序 命令字
上傳時間: 2013-11-03
上傳用戶:drink!
MCS-51單片機與鍵盤、顯示器、微型打印機的接口
上傳時間: 2013-12-24
上傳用戶:cepsypeng