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pre-review

  • ASC8512-CN兩節(jié)鋰電充電芯片

    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對電池充電分為三個階段: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,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: 1.充2節(jié)鋰離子和鋰聚合物電池 2.開關(guān)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(tài)檢測 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.防反向保護電路可防止電池電流倒灌 6.NTC 熱敏接口監(jiān)測電池溫度 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,移動蜂窩電話及智能手機 ●上網(wǎng)本、平板電腦、MID ●自充電電池組

    標簽: 8512 ASC CN 充電

    上傳時間: 2013-11-06

    上傳用戶:chfanjiang

  • LTC6994參考設(shè)計及PCB布線規(guī)則

    Demonstration circuit 1562A is an engineering toolto design and evaluate the LTC699X-X family ofTimerBlox circuits. The center section of the boardcontains a pre-configured TimerBlox function.DC1562A comes in twelve timing function variationsas outlined in Table 1.Surrounding the center board is a ”playground”prototyping area. The prototyping area has padsfor Dip-8, S8, MS8, or S6 packages with breadboarding connections to each pin and two convenientpower buses and ground bus surrounding theentire area. This area is for conditioning signals tocontrol the timer function and for adding loads controlled in time.

    標簽: 6994 LTC PCB 參考設(shè)計

    上傳時間: 2013-10-18

    上傳用戶:如果你也聽說

  • Mini2440啟動代碼詳解

    BIT_SELFREFRESH EQU (1<<22) ;定義SDRAM自刷新標志位 16 17 ;Pre-defined constants 預(yù)定義6種工作模式 18 USERMODE EQU 0x10 ;用戶模式 19 FIQMODE EQU 0x11 ;快速中斷模式 20 IRQMODE EQU 0x12 ;中斷模式 21 SVCMODE EQU 0x13 ;監(jiān)管模式 22 ABORTMODE EQU 0x17 ;異常中斷模式 23 UNDEFMODE EQU 0x1b ;未定義模式 24 25 MODEMASK EQU 0x1f ;模式掩碼 26 NOINT EQU 0xc0 ;取消中斷 27 28 ;The location of stacks;設(shè)置6種工作模式的堆棧的起始地址 29 ;在option.inc中定義了_STACK_BASEADDRESS EQU 0x33ff8000 30 UserStack EQU (_STACK_BASEADDRESS-0x3800) ;0x33ff4800 ~ 31 SVCStack EQU (_STACK_BASEADDRESS-0x2800) ;0x33ff5800 ~ 32 UndefStack EQU (_STACK_BASEADDRESS-0x2400) ;0x33ff5c00 ~ 33 AbortStack EQU (_STACK_BASEADDRESS-0x2000) ;0x33ff6000 ~ 34 IRQStack EQU (_STACK_BASEADDRESS-0x1000) ;0x33ff7000 ~ 35 FIQStack EQU (_STACK_BASEADDRESS-0x0) ;0x33ff8000 ~

    標簽: Mini 2440 啟動代碼

    上傳時間: 2013-10-07

    上傳用戶:m62383408

  • FREERTOS的官方移植文檔

    FeaturesThe following standard features are provided.• Choice of RTOS scheduling policy1. Pre-emptive:Always runs the highest available task. Tasks of identical priorityshare CPU time (fully pre-emptive with round robin time slicing).2. Cooperative:Context switches only occur if a task blocks, or explicitly callstaskYIELD().• Co-routines (light weight tasks that utilise very little RAM).• Message queues• Semaphores [via macros]• Trace visualisation ability (requires more RAM)• Majority of source code common to all supported development tools• Wide range of ports and examples

    標簽: FREERTOS 移植 文檔

    上傳時間: 2013-10-13

    上傳用戶:13162218709

  • Virtex-5 GTP Transceiver Wizar

    The LogiCORE™ GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex™-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standards, or from scratch, to support a wide variety of custom protocols.The Wizard produces a wrapper, an example design, and a testbench for rapid integration and verification of the serial interface with your custom function Features• Creates customized HDL wrappers to configureVirtex-5 RocketIO™ GTP transceivers• Users can configure Virtex-5 GTP transceivers toconform to industry standard protocols usingpredefined templates, or tailor the templates forcustom protocols• Included protocol templates provide support for thefollowing specifications: Aurora, CPRI, FibreChannel 1x, Gigabit Ethernet, HD-SDI, OBSAI,OC3, OC12, OC48, PCI Express® (PCIe®), SATA,SATA II, and XAUI• Automatically configures analog settings• Each custom wrapper includes example design, testbench; and both implementation and simulation scripts

    標簽: Transceiver Virtex Wizar GTP

    上傳時間: 2013-10-23

    上傳用戶:leyesome

  • 多徑信道下OFDM系統(tǒng)定時同步算法

    文中在pre-FFT定時同步算法的基礎(chǔ)上提出一個新的定時同步算法及其改進算法,該算法利用規(guī)則集對相關(guān)函數(shù)和導(dǎo)函數(shù)優(yōu)化的方法得以進一步減小估計方差,本文在給出其推導(dǎo)過程的基礎(chǔ)上給出了仿真結(jié)果,并與相關(guān)算法進行比較,結(jié)果表明新算法的定時估計精度較高且具有一定的魯棒性。

    標簽: OFDM 多徑信道 定時同步算法

    上傳時間: 2013-10-29

    上傳用戶:hebmuljb

  • 單片機12864液晶時鐘顯示程序

    12864液晶時鐘顯示程序 LCD 地址變量 ;**************變量的定義***************** RS             BIT      P2.0            ;LCD數(shù)據(jù)/命令選擇端(H/L) RW             BIT      P2.1          ;LCD讀/寫選擇端(H/L) EP             BIT      P2.2            ;LCD使能控制 PSB        EQU P2.3 RST        EQU P2.5 PRE            BIT      P1.4            ;調(diào)整鍵(K1) ADJ            BIT      P1.5            ;調(diào)整鍵(K2) COMDAT         EQU P0 LED        EQU P0.3 YEAR           DATA      18H            ;年,月,日變量 MONTH          DATA      19H DATE           DATA      1AH WEEK           DATA      1BH HOUR           DATA      1CH            ;時,分,秒,百分之一秒變量 MIN            DATA      1DH SEC            DATA      1EH SEC100         DATA      1FH STATE          DATA      23H LEAP           BIT      STATE.1            ;是否閏年標志1--閏年,0--平年 KEY_S          DATA      24H            ;當前掃描鍵值 KEY_V          DATA      25H            ;上次掃描鍵值 DIS_BUF_U0      DATA      26H            ;LCD第一排顯示緩沖區(qū) DIS_BUF_U1      DATA      27H DIS_BUF_U2      DATA      28H DIS_BUF_U3      DATA      29H DIS_BUF_U4      DATA      2AH DIS_BUF_U5      DATA      2BH DIS_BUF_U6      DATA      2CH DIS_BUF_U7      DATA      2DH DIS_BUF_U8      DATA      2EH DIS_BUF_U9      DATA      2FH DIS_BUF_U10     DATA      30H DIS_BUF_U11     DATA      31H DIS_BUF_U12     DATA      32H DIS_BUF_U13     DATA      33H DIS_BUF_U14     DATA      34H DIS_BUF_U15     DATA      35H DIS_BUF_L0      DATA      36H            ;LCD第三排顯示緩沖區(qū) DIS_BUF_L1      DATA      37H DIS_BUF_L2      DATA      38H DIS_BUF_L3      DATA      39H DIS_BUF_L4      DATA      3AH DIS_BUF_L5      DATA      3BH DIS_BUF_L6      DATA      3CH DIS_BUF_L7      DATA      3DH DIS_BUF_L8      DATA      3EH DIS_BUF_L9      DATA      3FH DIS_BUF_L10     DATA      40H DIS_BUF_L11     DATA      41H DIS_BUF_L12     DATA      42H DIS_BUF_L13     DATA      43H DIS_BUF_L14     DATA      44H DIS_BUF_L15     DATA      45H FLAG            DATA      46H ;1-年,2-月,3-日,4-時,5-分,6-秒,7-退出調(diào)整。 DIS_H           DATA      47H DIS_M           DATA      48H DIS_S           DATA      49H

    標簽: 12864 單片機 液晶時鐘 顯示程序

    上傳時間: 2013-11-09

    上傳用戶:xingisme

  • Virtex-5 GTP Transceiver Wizar

    The LogiCORE™ GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex™-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standards, or from scratch, to support a wide variety of custom protocols.The Wizard produces a wrapper, an example design, and a testbench for rapid integration and verification of the serial interface with your custom function Features• Creates customized HDL wrappers to configureVirtex-5 RocketIO™ GTP transceivers• Users can configure Virtex-5 GTP transceivers toconform to industry standard protocols usingpredefined templates, or tailor the templates forcustom protocols• Included protocol templates provide support for thefollowing specifications: Aurora, CPRI, FibreChannel 1x, Gigabit Ethernet, HD-SDI, OBSAI,OC3, OC12, OC48, PCI Express® (PCIe®), SATA,SATA II, and XAUI• Automatically configures analog settings• Each custom wrapper includes example design, testbench; and both implementation and simulation scripts

    標簽: Transceiver Virtex Wizar GTP

    上傳時間: 2013-10-20

    上傳用戶:dave520l

  • 單片機12864液晶時鐘顯示程序

    12864液晶時鐘顯示程序 LCD 地址變量 ;**************變量的定義***************** RS             BIT      P2.0            ;LCD數(shù)據(jù)/命令選擇端(H/L) RW             BIT      P2.1          ;LCD讀/寫選擇端(H/L) EP             BIT      P2.2            ;LCD使能控制 PSB        EQU P2.3 RST        EQU P2.5 PRE            BIT      P1.4            ;調(diào)整鍵(K1) ADJ            BIT      P1.5            ;調(diào)整鍵(K2) COMDAT         EQU P0 LED        EQU P0.3 YEAR           DATA      18H            ;年,月,日變量 MONTH          DATA      19H DATE           DATA      1AH WEEK           DATA      1BH HOUR           DATA      1CH            ;時,分,秒,百分之一秒變量 MIN            DATA      1DH SEC            DATA      1EH SEC100         DATA      1FH STATE          DATA      23H LEAP           BIT      STATE.1            ;是否閏年標志1--閏年,0--平年 KEY_S          DATA      24H            ;當前掃描鍵值 KEY_V          DATA      25H            ;上次掃描鍵值 DIS_BUF_U0      DATA      26H            ;LCD第一排顯示緩沖區(qū) DIS_BUF_U1      DATA      27H DIS_BUF_U2      DATA      28H DIS_BUF_U3      DATA      29H DIS_BUF_U4      DATA      2AH DIS_BUF_U5      DATA      2BH DIS_BUF_U6      DATA      2CH DIS_BUF_U7      DATA      2DH DIS_BUF_U8      DATA      2EH DIS_BUF_U9      DATA      2FH DIS_BUF_U10     DATA      30H DIS_BUF_U11     DATA      31H DIS_BUF_U12     DATA      32H DIS_BUF_U13     DATA      33H DIS_BUF_U14     DATA      34H DIS_BUF_U15     DATA      35H DIS_BUF_L0      DATA      36H            ;LCD第三排顯示緩沖區(qū) DIS_BUF_L1      DATA      37H DIS_BUF_L2      DATA      38H DIS_BUF_L3      DATA      39H DIS_BUF_L4      DATA      3AH DIS_BUF_L5      DATA      3BH DIS_BUF_L6      DATA      3CH DIS_BUF_L7      DATA      3DH DIS_BUF_L8      DATA      3EH DIS_BUF_L9      DATA      3FH DIS_BUF_L10     DATA      40H DIS_BUF_L11     DATA      41H DIS_BUF_L12     DATA      42H DIS_BUF_L13     DATA      43H DIS_BUF_L14     DATA      44H DIS_BUF_L15     DATA      45H FLAG            DATA      46H ;1-年,2-月,3-日,4-時,5-分,6-秒,7-退出調(diào)整。 DIS_H           DATA      47H DIS_M           DATA      48H DIS_S           DATA      49H

    標簽: 12864 單片機 液晶時鐘 顯示程序

    上傳時間: 2013-12-25

    上傳用戶:wvbxj

  • c語言編程規(guī)范Style guidelines and programming practices for C/C++ code for Dynamic Software Solutions. Use

    c語言編程規(guī)范Style guidelines and programming practices for C/C++ code for Dynamic Software Solutions. Use the checklist at the end of this document prior to submitting code for peer review.

    標簽: programming guidelines Solutions for

    上傳時間: 2014-07-11

    上傳用戶:aeiouetla

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