G5177為致新科技為移動電源領域量身打造的2A輸出同步升壓IC,效率高達90%以上，價格便宜，周邊電子元件少，省肖特基和關斷MOS,整體成本大大降低，是移動電源和移動電源+WIFI方案的首選。 我們還有1A同步升壓產品可以P2P選擇。
上傳時間： 2013-10-12
上傳用戶：tb_6877751
兩節鋰電充電IC-ASC8512 ASC8512 為開關型兩節鋰聚合物電池充電管理芯片，非常適合于便攜式設備的充電管理應用。ASC8512 集內置功率MOSFET、高精度電壓和電流調節器、預充、充電狀態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對電池充電分為三個階段：預充（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，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。 兩節鋰電池充電IC ASC8512特點： 1.充2節鋰離子和鋰聚合物電池 2.開關頻率達400K 3.充電電流最大可做2A 4.輸入電壓9V到18V 5.電池狀態檢測 6.恒壓充電電壓值可通過外接電阻微調 7.千分之五的充電電壓控制精度 5.防反向保護電路可防止電池電流倒灌 6.NTC 熱敏接口監測電池溫度 7.LED充電狀態指示 8.工作環境溫度范圍：-20℃～70℃ 9.TSSOP-14 應用領域：應用 ●手持設備，包括醫療手持設備 ●Portable-DVD，PDA，移動蜂窩電話及智能手機 ●上網本、平板電腦、mID ●自充電電池組
上傳時間： 2013-11-06
上傳用戶：chfanjiang
ASC8511 是開關式、單節鋰電池充電管理芯片,采用峰值電流?？刂频腂UCK 拓撲結構，最大充電電流可達2.5A. ASC8511 通過恒壓控制環（CV）和恒流控制環（CC）來調整鋰電池充電電壓和恒流充電電流.ASC8511 集成電池過溫保護、充電時間限制、輸出短路等保護功能，通過NTC 檢測電池溫度，可以實現電池過熱保護功能，兩個LED 指示燈指示電池充電狀態.ASC8511 采用16 腳T-SSOP 封裝. 特點 ● 充電電壓精度0.5% ● 最大充電電流2.5A ● 自耗電小于5uA ● 電阻可編程調節恒流充電電流 ● 開關頻率500KHZ ● 適用于單節鋰電池充電 ● 軟啟動 ● 電池過溫保護 ● 芯片過熱保護 ● 狀態指示 ● 環境溫度范圍: -20℃～70℃ ● 16 腳T-SSOP 封裝 應用 ● 手持設備、POS機 ● mID、數碼產品 ● 移動DVD ● 筆記本、對講機
上傳時間： 2013-11-22
上傳用戶：13788529953
ST 公司的STM32TS60 是集成了I2C,SPI,UART 和USB 接口的數字電阻型多觸摸屏控制器, 能同時跟蹤多達10 個單獨的觸摸,分辨率達0.17mm,觸摸屏掃描速率達125 Hz 到 250 Hz, 主要用于游戲機,智能手機,PMP,PND,mID 和筆記本電腦.本文介紹STM32TS60 主要特 性,2.5”-6”屏單器件應用電路。
上傳時間： 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
上傳時間： 2013-11-05
上傳用戶：維子哥哥
ARM核心是主控SOC中的重要部分，系統的日常應用都由ARM核心來完成，因此ARM核心的效能很大程度上跟用戶體驗有關。ARM公司一般用DMIPS/MHz來標稱ARM核心的性能。DMIPS是Dhrystone Million Instructions executed Per Second的縮寫，反映核心的整數計算能力。但Dhrystone算法代碼本身比較叫，可以完全放到Cache中執行，因此反映的只是核心能力，并不能反映緩存、內存I/O性能。
上傳時間： 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
上傳時間： 2013-11-14
上傳用戶：zoudejile
讀取MapInfo的交換格式的Mif\mID文件
上傳時間： 2014-01-21
上傳用戶：熊少鋒
MAPINFO各式轉換極為TXT---->mID\MIF
上傳時間： 2013-11-30
上傳用戶：stampede
讀取資源包的工具，自己寫的。湊個數。效果不錯?？梢宰R別png mID wav .適合手機游戲開發
上傳時間： 2014-01-24
上傳用戶：lps11188
