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使用DS89C450作為靜態(tài)LCD顯示屏控制器
摘要：很多公司的微控制器集成了LCD顯示屏控制器，它采用硬件實(shí)現(xiàn)。有的微控制器，例如DS89C450，不提供這一功能，但是可以通過(guò)軟件實(shí)現(xiàn)一個(gè)簡(jiǎn)單的顯示控制器。本應(yīng)用筆記闡述...
2009-04-23 標(biāo)簽：lcd 1278
“綠色承諾 創(chuàng)新共贏——2009年友達(dá)技術(shù)趨勢(shì)論壇”即將召開(kāi)
“綠色承諾 創(chuàng)新共贏——2009年友達(dá)技術(shù)趨勢(shì)論壇”即將召開(kāi) 更輕薄，更亮麗，更快速，更節(jié)能。薄膜晶體管液晶顯示器（TFT-LCD）一經(jīng)問(wèn)世，在給人們生活方式帶來(lái)巨大改...
2009-04-23 標(biāo)簽：論壇 894
兩岸速遞:信息與通訊技術(shù)廠商對(duì)Q2景氣看法樂(lè)觀
兩岸速遞:信息與通訊技術(shù)廠商對(duì)Q2景氣看法樂(lè)觀 據(jù)臺(tái)灣地區(qū)資策會(huì)產(chǎn)業(yè)信息研究所(MIC)對(duì)臺(tái)灣地區(qū)信息與通訊技術(shù)(ICT)廠商進(jìn)行產(chǎn)業(yè)景氣預(yù)期調(diào)查，結(jié)果顯示臺(tái)灣ICT廠商對(duì)今...
Broadcom攜手暉悅推出全合一數(shù)字電視平臺(tái)
Broadcom攜手暉悅推出全合一數(shù)字電視平臺(tái) Broadcom(博通)公司宣布，已經(jīng)與中國(guó)上海暉悅數(shù)字視頻科技有限公司合作開(kāi)發(fā)出新一代全合一數(shù)字電視Turnkey解決方案，該方案支持包...
DS8007和智能卡接口基礎(chǔ)
摘要：DS8007是一款低成本的多協(xié)議雙智能卡接口，滿足所有ISO 7816、EMV™和GSM11-11的要求。這個(gè)混合信號(hào)外設(shè)可以管理微控制器和兩個(gè)...
2009-04-23 標(biāo)簽：接口 774
從高速微控制器系列向超高速閃存微控制器的升級(jí)
摘要：多種原因會(huì)促使我們把以前使用高速微控制器(DS80C310/DS80C320/DS80C323/DS8xC520)的8051設(shè)計(jì)升級(jí)到新的超高速閃存微控制器(DS89C430/DS89C450)。促使產(chǎn)品升級(jí)的原因是：更高的性能、增...
2009-04-23 標(biāo)簽：微控制器 725
使用DS87C530/DS5250實(shí)時(shí)時(shí)鐘-Using th
Abstract: The Dallas Semiconductor DS87C530 high-speed microcontroller with real-time clock (RTC) is ideal for applications such as data logging. This application note examines temperature-measuring techniques interfacing to the DS1620 dig...
2009-04-23 標(biāo)簽：實(shí)時(shí)時(shí)鐘 1445
MAXQ2000微控制器軟件I2C驅(qū)動(dòng)
摘要：I²C (內(nèi)置于集成電路)是一種2線接口，實(shí)現(xiàn)集成電路之間的雙向通信。本應(yīng)用筆記介紹MAXQ2000微控制器的軟件I²C驅(qū)動(dòng)器，它采用微控制器的任意GPIO引腳，支持100kHz或400kHz...
2009-04-23 標(biāo)簽：微控制器 971
基于MAXQ微控制器構(gòu)建增強(qiáng)型智能4-20mA變送器
摘要：4-20mA電流環(huán)路是工業(yè)過(guò)程監(jiān)控應(yīng)用中發(fā)送傳感器信息時(shí)常用的技術(shù)。(傳感器測(cè)量溫度、壓力、速度和液體流量等物理參數(shù))。電流環(huán)路信號(hào)對(duì)噪聲很不敏感，并且可采用遠(yuǎn)端電...
2009-04-23 標(biāo)簽：微控制器 768
利用DS8007評(píng)估套件進(jìn)行設(shè)計(jì)
摘要：本文闡述使用DS8007雙智能卡接口評(píng)估(EV)套件的步驟，解釋了怎樣安裝和配置軟件、配置硬件，建立并裝載板上DS5002FP微控制器執(zhí)行的應(yīng)用軟件。提供了一個(gè)簡(jiǎn)單的"Hello World"實(shí)...
2009-04-23 標(biāo)簽：DS8007 1354
自動(dòng)重試控制器套裝在電信中應(yīng)用
Abstract: In Telecom systems such as Radio Link and Point to Point, the point-to-multipoint controller shuts the system off in the event of a fault. When the fault is brief (for instance, a momentary short circuit due to measurement and ca...
2009-04-23 標(biāo)簽：控制器 494
使用MAXQ3210作為微處理器監(jiān)控電路
摘要：MAXQ3210微控制器能夠完成各種微處理器監(jiān)控功能，支持包括上電復(fù)位、電源排序、看門(mén)狗超時(shí)和輸入開(kāi)關(guān)去抖等功能。根據(jù)應(yīng)用，MAXQ3210還可以直接為微處理器供電。本應(yīng)用筆...
2009-04-23 標(biāo)簽：MAXQ3210 1226
DS28DG02用戶指南
要：DS28DG02是帶有PIO、實(shí)時(shí)時(shí)鐘(RTC)、復(fù)位、電池監(jiān)控器和看門(mén)狗的2kb SPI™ EEPROM，它組合了便攜式設(shè)備和嵌入式應(yīng)用中需要的多種功能。本應(yīng)用筆記對(duì)產(chǎn)品數(shù)據(jù)資料進(jìn)行補(bǔ)充說(shuō)明...
2009-04-23 標(biāo)簽：DS28DG02 1139
簡(jiǎn)單的演示如何使用一個(gè)DS1232和MicroMonitor
Abstract: Discusses how the DS1232 can be used to MicroMonitor an 8051-based system. This supervisor circuit provides power-on-reset (POR), manual reset (push-button) input, a watchdog timer (strobe timer), and an early power-fail comparat...
使用DS1814 MicroMonitor來(lái)控制微處理器重置
Abstract: The following application note shows simple circuits using the DS1814 MicroMonitor. Circuits include interfacing with an 8051 microprocessor, interfacing with a PIC microcontroller, and using an LED to indicate reset. ...
2009-04-23 標(biāo)簽：MicroMonit 843
Microprocessor Supervisors Off
Abstract: Discusses the value of a µP supervisor reset circuit in a microprocessor-based system. Explains the terms associated with a supervisory circuit and how they should be implemented. Subjects discussed include power-on reset (...
2009-04-23 標(biāo)簽：Microproce 4326
CPU Supervisors: Frequently As
Abstract: Addresses the function of a CPU supervisor and how they can be applied to monitor a system. Discusses the function of a watchdog timer, chip enable gating pin, as well as a sense input for an early warning signal. The document al...
2009-04-23 標(biāo)簽：cpu 950
Supervisory Circuits Keep Your
Abstract: Understand the value of a µP supervisor to ensure proper system operation during power-up, power-down, and brownout situations (undervoltage monitoring). In addition, provides information about overvoltage and windowed moni...
2009-04-23 標(biāo)簽：Microproce 1504
Choosing Supervisor Outputs
Abstract: Maxim offers µP supervisors/voltage detectors with different reset output configurations. The note describes the differences between open-drain, push-pull, and bi-directional outputs. Maxim offers supervis...
2009-04-23 標(biāo)簽：Outputs 1709
看門(mén)狗提高系統(tǒng)可靠性，如何選擇正確的部分-Watchdogs
Abstract: Watchdog timers are used to monitor and minimize code execution errors. Internal watchdog timers are subject to code execution problems, making external watchdog circuits invaluable in preventing system lockup.This docume...
2009-04-23 標(biāo)簽： 1740
美國(guó)達(dá)拉斯半導(dǎo)體微處理器監(jiān)選擇指南-Dallas Semic
Abstract: This application note provides a quick guide to selecting Dallas Semiconductor Microprocessor Supervisor ICs. Many customers searching for a microprocessor supervisor have requested a simpler alternative to the Maxim online param...
2009-04-23 標(biāo)簽：微處理器 918
MAX16046–MAX16049 EEPROM可編程系統(tǒng)管
摘要：MAX16046–MAX16049系統(tǒng)管理器可以在焊接到應(yīng)用電路板后進(jìn)行編程。這意味著只需儲(chǔ)存未編程器件，而最新版本的配置信息可以在生產(chǎn)測(cè)試過(guò)程中寫(xiě)入器件。通過(guò)幾項(xiàng)簡(jiǎn)單的測(cè)試...
2009-04-23 標(biāo)簽：MAX16046 1139
MAX3740激光驅(qū)動(dòng)器的精確功率控制
摘要：本文描述并分析了三種可對(duì)MAX3740激光器驅(qū)動(dòng)器進(jìn)行精確激光功率控制的電路。介紹了每種電路的原理圖、仿真結(jié)果，及其各自的優(yōu)缺點(diǎn)。 MAX3740 VCSEL激光驅(qū)動(dòng)器...
2009-04-22 標(biāo)簽：驅(qū)動(dòng)MAX3740驅(qū)動(dòng) 805
接口數(shù)控花盆和電阻激光驅(qū)動(dòng)器-Interfacing Dig
Abstract: This application brief describes the two topologies used to bias optical laser drivers (open loop and closed loop) and demonstrates examples using the DS1847 digital potentiometer and the MAX3273 laser driver. A laser module desi...
2009-04-22 標(biāo)簽：驅(qū)動(dòng)器接口 817
實(shí)施內(nèi)部校準(zhǔn)使用DS1858-Implementing In
IntroductionSome standards, such as the SFF-8472, require that fiber optic signals be monitored. Two means of calibration are available to the designer. Precalibration, referred to by the SFF-8472 Standard as internal calibration,...
2009-04-22 標(biāo)簽：DS1858 1133
如何解釋DS1854，DS1857和DS1858溫度和電壓讀
Abstract: The DS1854, DS1857, and DS1858 monitor VCC, ambient temperature, and external analog inputs. This application note explains how to interpret the values stored in the Main Device SRAM and translate them into temperature and voltag...
如何解釋DS1852溫度和電壓讀數(shù)-How to Inter
Abstract: The DS1852 is a digital potentiometer with five analog inputs that can be used in conjunction with the potentiometers to gather feedback information about an analog system, as well as provide analog control functions. Its intende...
2009-04-22 標(biāo)簽：DS1852 1012
如何解釋DS1847/DS1848溫度讀數(shù)-How to I
Abstract: The DS1847 and DS1848 have an on-chip direct-to-digital temperature sensor. The temperature is stored in address locations E2h and E3h. This application note explains how to convert the digital temperature data into a decimal deg...
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