Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for batteryoperation. In some circumstances,due to space, power or reliability considerations,it is preferable to operate the circuitry from a single 1.5Vcell. Unfortunately, a 1.5V supply eliminates almost alllinear ICs as design candidates. In fact, the LM10 opamp-reference and the LT®1017/LT1018 comparators arethe only IC gain blocks fully specifi ed for 1.5V operation.Further complications are presented by the 600mV dropof silicon transistors and diodes. This limitation consumesa substantial portion of available supply range, makingcircuit design diffi cult. Additionally, any circuit designedfor 1.5V operation mustfunction at end-of-life batteryvoltage, typically 1.3V. (See Box Section, “Componentsfor 1.5V Operation.”)
標(biāo)簽： Circuitry Operation Single Cell
上傳時間： 2013-10-30
上傳用戶：hz07104032
The 8051 Microcontroller，戴夫，8051微控制器，英文原版
標(biāo)簽： Microcontroller 8051 The
上傳時間： 2013-11-03
上傳用戶：leixinzhuo
WINAVR/GCC教程
上傳時間： 2014-12-25
上傳用戶：yanyueshen
新唐NUC122 Technical Reference Manual SC(中文技術(shù)指南)
標(biāo)簽： Technical Reference Manual 1.06
上傳時間： 2013-11-03
上傳用戶：anng
Designing read/write device (RWD) units for industrial RF-Identification applications is strongly facilitated by the NXP Semiconductors HITAG Reader Chip HTRC110. All needed function blocks, like the antenna driver, modulator demodulator and antenna diagnosis unit, are integrated in the HTRC110. Therefore only a minimum number of additional passive components are required for a complete RWD. This Application Note describes how to design an industrial RF-Identification system with the HTRC110. The major focus is dimensioning of the antenna, all other external components including clock and power supply, as well as the demodulation principle and its implementatio
上傳時間： 2013-10-22
上傳用戶：zhengjian
實時時鐘是微機保護(hù)裝置的重要部件，在討論PCF8583結(jié)構(gòu)與功能的基礎(chǔ)上，提出采用dsPIC33F系列微處理器與串行I2C時鐘PCF8583的接口設(shè)計方案，給出了相應(yīng)的接口電路與軟件流程。該設(shè)計方案結(jié)構(gòu)簡單，可靠性高，開發(fā)周期短，具有一定的實用與參考價值。所設(shè)計的微機保護(hù)裝置已投入現(xiàn)場運行，效果良好。 Abstract: Real-time clock chip is an important part in microcomputer protection device.Based on discussing the structure and function of PCF8583，a new interface scheme which uses dsPIC33F microprocessor and serial clock chip（I2C）PCF8583is proposed.The method of the circuit design and the main software flow are introduced in this paper.The scheme has simple structure，higher reliability and shorter exploitation cycle，so has definite practicality or reference value.The microcomputer protection device has been put into operation with better effects.
標(biāo)簽： 8583 PCF 串行時鐘 中的應(yīng)用
上傳時間： 2013-11-18
上傳用戶：Thuan
數(shù)字信號處理器dsPIC33F集多通道高精度A/D轉(zhuǎn)換、多通訊模式、看門狗、CMOS Flash技術(shù)等于一體，其內(nèi)部可完成所有數(shù)據(jù)操作，實現(xiàn)總線不出芯片技術(shù)。將該處理器應(yīng)用于微機保護(hù)裝置，提出基于dsPIC33F微處理器的微機保護(hù)裝置的設(shè)計方案，給出相應(yīng)的接口電路與軟件流程。該設(shè)計方案結(jié)構(gòu)簡單，性價比及可靠性高，開發(fā)周期短，具有一定的實用推廣價值。所研制的微機保護(hù)裝置現(xiàn)場運行效果良好。 Abstract: The dsPIC33F microprocessor has a plentiful interior resource which contains multi-channel，high precision A/D converters，multi-communication module，watchdog，CMOS Flash technology，and so on.All data manipulations is accomplished interiorly.What is more，it makes the technology that bus does not go beyond the chip comes into practice.The paper put forwards a design scheme based on dsPIC33F microprocessor.The scheme has the advantages of simple structure，high reliability and shortened exploitation cycle.What is more，it has definite practicality and reference.The microcomputer protection device has been put into operation with excellent effects.
上傳時間： 2013-11-16
上傳用戶：開懷常笑
前言 2000年在學(xué)校我第一次接觸Linux，那時在班里學(xué)習(xí)做網(wǎng)頁的氣氛較濃，我也是為了學(xué)習(xí)PHP才認(rèn)識Linux的。PHP解析器的安裝過程讓我多多少少對GCC有了些認(rèn)識，不過當(dāng)時我并沒有意識到它還可以用于嵌入式系統(tǒng)編程上，至于Linux、認(rèn)為用處只在于架構(gòu)一個免費的WEB站點。 2002年在公司我第一次接觸了AVR，當(dāng)時公司只有一個ICC序列號，導(dǎo)致我和一個同事經(jīng)常搶用一臺機器，不過這種狀況沒有持續(xù)多久，我在瀏覽雙龍的數(shù)據(jù)光盤時發(fā)現(xiàn)一個叫“如何使用AVR-GCC”的PDF文檔，上面沒有署名，我想我應(yīng)該感謝該文的作者。我發(fā)現(xiàn)這個免費的編譯軟件遠(yuǎn)比ICC好用。 今天，我把使用AVR-GCC兩年來的體會寫在這里，愿更多的人了解和使用GCC及自由軟件。 水平有限，錯誤和缺陷在所難免，請廣大讀者批評指正。
標(biāo)簽： AVR GCC 單片機 程序設(shè)計
上傳時間： 2013-12-18
上傳用戶：redmoons
Atmel AVR 單片機上網(wǎng)方案 The AVR Embedded Internet Toolkit is the fastest way to connect anyembedded design to the Internet. It includes an ATmega AVR microcontroller,dedicated hardware, and all required software protocols forconnecting to the Internet. The AVR Embedded Internet Toolkit is thefastest choice for getting started with embedded Internet and for developinga complete embedded application connected to the Internet.
上傳時間： 2013-11-06
上傳用戶：xjz632
AVR 單片機與GCC編程 目錄第一章 AVR 單片機開發(fā)概述1.1 一個簡簡單的例子1.2 用MAKEFILE 管理項目1.3 開發(fā)環(huán)境的配置第二章 存儲器操作2.1 AVR 單片機存儲器組織結(jié)構(gòu)2.2 I/O 寄存器操作2.3 SRAM 內(nèi)變量的使用2.4 在程序中訪問FLASH 程序存儲器2.5 EEPROM 數(shù)據(jù)存儲器操作2.6 avr-gcc 段結(jié)構(gòu)與再定位第三章 功能模塊編程示例3.1 中斷服務(wù)程序3.2 定時器/計數(shù)器應(yīng)用3.3 看門狗應(yīng)用3.4 UART 應(yīng)用3.5 PWM 功能編程3.6 模擬比較器3.7 A/D 轉(zhuǎn)換模塊編程第四章 使用C 語言標(biāo)準(zhǔn)I/O 流調(diào)試程序4.1 avr-libc 標(biāo)準(zhǔn)I/O 流描述4.2 利用標(biāo)準(zhǔn)I/0 流調(diào)試程序第五章 AT89S52 下載編程器的制作5.1 LuckyProg S52 概述5.2 AT89S52 ISP 功能簡介5.3 程序設(shè)計第六章 硬件TWI 端口編程6.1 TWI 模塊概述6.2 主控模式操作實時時鐘DS13076.3 兩個Mega8 間的TWI 通信第七章 BootLoader 功能應(yīng)用7.1 BootLoader 功能介紹7.2 avr-libc 對BootLoader 的支持7.3 BootLoader 應(yīng)用實例 第八章 匯編語言支持8.1 C 代碼中內(nèi)聯(lián)匯編程序8.2 獨立的匯編語言支持8.3 C 與匯編混合編程第九章 C++語言支持結(jié)束語附錄 1 avr-gcc 選項附錄 2 ihex 格式描述
上傳時間： 2013-10-26
上傳用戶：wangyi39
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