G5177為致新科技為移動(dòng)電源領(lǐng)域量身打造的2A輸出同步升壓IC,效率高達(dá)90%以上，價(jià)格便宜，周邊電子元件少，省肖特基和關(guān)斷MOS,整體成本大大降低，是移動(dòng)電源和移動(dòng)電源+WIFI方案的首選。 我們還有1A同步升壓產(chǎn)品可以P2P選擇。
標(biāo)簽： IC-FOR G5177 mID 同步升壓
上傳時(shí)間： 2013-10-12
上傳用戶：tb_6877751
兩節(jié)鋰電充電IC-ASC8512 ASC8512 為開關(guān)型兩節(jié)鋰聚合物電池充電管理芯片，非常適合于便攜式設(shè)備的充電管理應(yīng)用。ASC8512 集內(nèi)置功率MOSFET、高精度電壓和電流調(diào)節(jié)器、預(yù)充、充電狀態(tài)指示和充電截止等功能于一體，采用TSSOP-14、SSOP-14兩種封裝形式。ASC8512對(duì)電池充電分為三個(gè)階段：預(yù)充（Pre-charge）、恒流（CC／Constant Current）、恒壓（CV／Constant Voltage）過程，恒流充電電流通過外部電阻決定，最大充電電流為2A.ASC8512 集成電流限制、短路保護(hù)，確保充電芯片安全工作。ASC8512 集成NTC 熱敏電阻接口，可以采集、處理電池的溫度信息，保證充電電池的安全工作溫度。 兩節(jié)鋰電池充電IC ASC8512特點(diǎn)： 1.充2節(jié)鋰離子和鋰聚合物電池 2.開關(guān)頻率達(dá)400K 3.充電電流最大可做2A 4.輸入電壓9V到18V 5.電池狀態(tài)檢測(cè) 6.恒壓充電電壓值可通過外接電阻微調(diào) 7.千分之五的充電電壓控制精度 5.防反向保護(hù)電路可防止電池電流倒灌 6.NTC 熱敏接口監(jiān)測(cè)電池溫度 7.LED充電狀態(tài)指示 8.工作環(huán)境溫度范圍：-20℃～70℃ 9.TSSOP-14 應(yīng)用領(lǐng)域：應(yīng)用 ●手持設(shè)備，包括醫(yī)療手持設(shè)備 ●Portable-DVD，PDA，移動(dòng)蜂窩電話及智能手機(jī) ●上網(wǎng)本、平板電腦、mID ●自充電電池組
上傳時(shí)間： 2013-11-06
上傳用戶：chfanjiang
ASC8511 是開關(guān)式、單節(jié)鋰電池充電管理芯片,采用峰值電流?？刂频腂UCK 拓?fù)浣Y(jié)構(gòu)，最大充電電流可達(dá)2.5A. ASC8511 通過恒壓控制環(huán)（CV）和恒流控制環(huán)（CC）來調(diào)整鋰電池充電電壓和恒流充電電流.ASC8511 集成電池過溫保護(hù)、充電時(shí)間限制、輸出短路等保護(hù)功能，通過NTC 檢測(cè)電池溫度，可以實(shí)現(xiàn)電池過熱保護(hù)功能，兩個(gè)LED 指示燈指示電池充電狀態(tài).ASC8511 采用16 腳T-SSOP 封裝. 特點(diǎn) ● 充電電壓精度0.5% ● 最大充電電流2.5A ● 自耗電小于5uA ● 電阻可編程調(diào)節(jié)恒流充電電流 ● 開關(guān)頻率500KHZ ● 適用于單節(jié)鋰電池充電 ● 軟啟動(dòng) ● 電池過溫保護(hù) ● 芯片過熱保護(hù) ● 狀態(tài)指示 ● 環(huán)境溫度范圍: -20℃～70℃ ● 16 腳T-SSOP 封裝 應(yīng)用 ● 手持設(shè)備、POS機(jī) ● mID、數(shù)碼產(chǎn)品 ● 移動(dòng)DVD ● 筆記本、對(duì)講機(jī)
上傳時(shí)間： 2013-11-22
上傳用戶：13788529953
ST 公司的STM32TS60 是集成了I2C,SPI,UART 和USB 接口的數(shù)字電阻型多觸摸屏控制器, 能同時(shí)跟蹤多達(dá)10 個(gè)單獨(dú)的觸摸,分辨率達(dá)0.17mm,觸摸屏掃描速率達(dá)125 Hz 到 250 Hz, 主要用于游戲機(jī),智能手機(jī),PMP,PND,mID 和筆記本電腦.本文介紹STM32TS60 主要特 性,2.5”-6”屏單器件應(yīng)用電路。
上傳時(shí)間： 2013-10-21
上傳用戶：dingdingcandy
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mID-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 圖Figure 1. Local Safety System
標(biāo)簽： FPGA 安全系統(tǒng)
上傳時(shí)間： 2013-11-05
上傳用戶：維子哥哥
ARM核心是主控SOC中的重要部分，系統(tǒng)的日常應(yīng)用都由ARM核心來完成，因此ARM核心的效能很大程度上跟用戶體驗(yàn)有關(guān)。ARM公司一般用DMIPS/MHz來標(biāo)稱ARM核心的性能。DMIPS是Dhrystone Million Instructions executed Per Second的縮寫，反映核心的整數(shù)計(jì)算能力。但Dhrystone算法代碼本身比較叫，可以完全放到Cache中執(zhí)行，因此反映的只是核心能力，并不能反映緩存、內(nèi)存I/O性能。
上傳時(shí)間： 2013-10-16
上傳用戶：devin_zhong
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mID-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 圖Figure 1. Local Safety System
標(biāo)簽： FPGA 安全系統(tǒng)
上傳時(shí)間： 2013-11-14
上傳用戶：zoudejile
讀取MapInfo的交換格式的Mif\mID文件
上傳時(shí)間： 2014-01-21
上傳用戶：熊少鋒
MAPINFO各式轉(zhuǎn)換極為TXT---->mID\MIF
標(biāo)簽： MAPINFO mIDMIF TXT gt
上傳時(shí)間： 2013-11-30
上傳用戶：stampede
讀取資源包的工具，自己寫的。湊個(gè)數(shù)。效果不錯(cuò)?？梢宰R(shí)別png mID wav .適合手機(jī)游戲開發(fā)
上傳時(shí)間： 2014-01-24
上傳用戶：lps11188
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