6208c_硬件介绍

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KX6208 宽温工业级别 PS 2 键盘芯片 模块 说明书

KX6208 宽温工业级别 PS 2 键盘芯片 模块 说明书

KX6208宽温工业级别PS/2键盘芯片/模块用户手册(版本V1.3)1.1概序KX6208宽温工业级别PS/2键盘模块是一款基于PS/2键盘协议的键盘,适合于各种嵌入式设备对扩展人机界面的需求。

该模块具有低功耗,宽温度范围,可适用于各类特殊要求的人机界面环境。

1.2特性·完全兼容IBM的PS/2键盘协议·最大可支持128个按键·操作电压范围为3.4V-5.5V·提供工业级模块,提供DIP40,PLCC44,QFP44封装·工作温度范围-45℃~80℃1.3芯片管脚管脚(DIP系列)管脚(TQFP系列)符号I/O功能描叙1~837.36.35.34.33.32.31.30C0~C7O距阵键盘扫描输入端口12~16. 24~306,11,12,13,26,27,39NC引脚悬空39~3221~2840,41,42,43,44,1,2,3.18~25,17.28R0~R15(TQPF有R16.R17)I距阵键盘扫描输出端口1814XTAL214.318.000MHZ接22PF电容到地1915XTAL114.318.000MHZ接22PF电容到地9.20 4.16VSS电源地31.4029.38VCC电源105KB_DATA I PS/2数据输出117KB_CLK I PS/2时钟输出C0~C15,R0~RI5均加10K上拉电阻.1.4极限参数[1]下列条件应用于极限参数:a)器件在超过表 1.8.1"极限参数"工作可能会造成永久性的损坏。

这里只列出了一些极限值,并未涉及在这些极限值或其它条件下(除在表 1.8.2"电气特性"中所描述的之外)的器件功能操作。

b)本产品带有保护器件内部的电路设计,以避免超负荷的损坏性影响。

但是建议不要在超过极限值的情况下工作。

c)参数在操作温度范围内是有效的,除非另有规定。

所有的电压都是相对Vss 而言的,除非另有说明。

NOKIA诺基亚五一活动促销员培训手册

NOKIA诺基亚五一活动促销员培训手册

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ISL6208 规格书

ISL6208 规格书
A diode emulation feature is integrated in the ISL6208 to enhance converter efficiency at light load conditions. This feature also allows for monotonic start-up into pre-biased outputs. When diode emulation is enabled, the driver will allow discontinuous conduction mode by detecting when the inductor current reaches zero and subsequently turning off the low side MOSFET gate.
L8.2x2D
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

FAIRCHILD AN-6208 说明书

FAIRCHILD AN-6208 说明书

AN-6208Secondary-Side Synchronous Rectifier (SR) forLLC Resonant Converter Using FAN6208IntroductionThe LLC resonant converter has drawn a lot of attention recently due to its advantages over a conventional series resonant converter and parallel resonant converter: narrow frequency variation over wide load, input variation, and Zero Voltage Switching (ZVS) for the entire load range.In an LLC resonant converter, rectifier diodes are typically used to obtain DC output voltage from the transformer secondary winding. The conduction loss of diode rectifier contributes significantly to the overall power losses in an LLC resonant converter; especially in low output voltage applications. The conduction loss of a rectifier is proportional to the product of its forward-voltage drop and the forward conduction current. Using synchronous rectification (SR) where the rectifier diode is replaced by MOSFET with a small on resistance (R DSON), the forward-voltage drop of a synchronous rectifier can be lower than that of a diode rectifier and, consequently, the rectifier conduction loss can be reduced. FAN6208 is a synchronous rectification controller for isolated LLC or LC resonant converters that can drive two individual SR MOSFETs emulating the behavior of rectifier diodes. FAN6208 measures the SR conduction time of each switching cycle by monitoring the drain-to-source voltage of each SR and determines the optimal timing of SR gate drive. FAN6208 also uses the change of opto-coupler diode current to adaptively shrink the duration of SR gate drive signals during load transients to prevent shoot-through. To improve light-load efficiency, Green Mode disables the SR drive signals, minimizing gate drive power consumption at light-load conditions.This application note describes the design procedure for a SR circuit using FAN6208. The guidelines for printed circuit board (PCB) layout and a design example with experiment results are also presented. Figure 1 shows the typical application circuit of FAN6208.Figure 1. Typical ApplicationLLC Resonance Converter with SRFigure 2 shows the simplified schematic of a half-bridge LLC resonant converter, where L m is the magnetizing inductance that acts as a shunt inductor, L r is the series resonant inductor, and C r is the resonant capacitor. Since the magnetizing inductor is relatively small, a considerable amount of magnetizing current (I m) exists, which freewheels in the primary side without being involved in the power transfer. The primary-side current (I p) is sum of the magnetizing current and the secondary-side current referred to the primary.Figure 3 shows the typical gain curve of the half-bridge LLC resonant converter. To allow Zero Voltage Switching (ZVS) for the primary-side switches, gain curves with inductive impedance characteristics should be used, where the gain decreases as frequency increases. The resonant network has a resonant frequency determined by the resonance between L r and C r. When the switching frequency is lower than the resonant frequency (below resonance), the half resonance of reflected secondary-side current (diode current) finishes before the primary-side switch is turned off, as shown in Figure 4. When the switching frequency is higher than the resonant frequency (above resonance) the primary-side switch is turned off before the half resonance of reflected secondary-side current (diode current) is completed, as shown in Figure 5.Figure 2. Schematic of LLC ResonantConverter with SRApplication CircuitFigure 6 shows the typical application circuit of FAN6208 and Figure 7 shows the typical timing diagram of SR gate drive signal. FAN6208 senses the drain-to-source voltage of each SR to determine the gate drive timing. Once the body diode of SR begins conducting, the drain-to-source voltage drops to zero, which causes low detection (DETL) pin voltage to drop to zero. FAN6208 turns on the MOSFET after t ON-ON-DETL (about 350ns), when the voltage on DETL drops below 2V. As depicted in Figure 8, the turn -on delay (after t SR-ON-DETL ) is a sum of debounce time (150ns) and propagation delay (200ns).FAN6208 measures the SR conduction duration (t DETL ), during which DETL voltage stays lower than 2V, and uses this information to determine the turn-off instant of SR gates of the next switching cycle, as shown in Figure 7. The turn-off instant is obtained by subtracting a dead time (t DEAD ) from the measured SR conduction duration of theprevious switching cycle.Figure 6. Application Circuit of FAN6208Figure 7. SR Conduction Time Determinationmax .0.350SR DS ON FD DETLI R V R Aµ−−>(2)where I SR max is the maximum current of SR and R DS.ON is the maximum on-resistance of the SR MOSFET at hightemperature.Figure 9. Application Circuit of DETL PinRP Pin ConfigurationThe dead time can be programmed using a resistor on the RP pin. The relationship between the dead time and SR conduction duration (t DETL ) for different resistor values on the RP pin are given in Figure 10 and Figure 11. Since the SR conduction time is shrunk by the protection function (gate-shrink function) when t DEAD is smaller than 125ns, R p should be properly selected such that the gate-shrink function does not operate at maximum switching frequency.Figure 10. t DEAD vs. t DETL for Different R P (Low Frequency)Figure 11. t DEAD vs. t DETL for Different R P (High Frequency)The RP pin has an internal constant current source (41.5µA) and the pin voltage is determined by the R p resistor. Depending on the RP pin voltage, the Green Mode threshold of t DETL is determined as shown in Figure 12. When R RP is less than 36KΩ, FAN6208 operates in Low-Frequency Mode, where Green Mode is enabled when t DETL is smaller than 3.75µs. When R RP is larger than 36KΩ, High-Frequency Mode is selected and Green Mode is enabled for t DETL smaller than 1.90µs.The RP pin also has two internal thresholds for pin-open / short protection. Using RP pin short protection, remote on / off control can be implemented as shown in Figure 13.Figure 12. R P Pin OperationRPFigure 13. A pplication Circuit of RP Pin for RemoteON / OFFGate-Shrink FunctionsIn normal operation, the turn-off instant is determined by subtracting a dead time (t DEAD ) from the measured SR conduction duration of the previous switching cycle, as shown in Figure 7. This allows proper driving timing for the SR MOSFETS when the converter is in steady state and the switching frequency does not change much. However, this control method may cause shoot-through of SR MOSFETs when the switching frequency increases fast and switchingtransition of the primary-side MOSFETs takes place before the turn-off command of the SR is given. To prevent the shoot-through problem, FAN6208 has gate-shrink functions. Gate shrink takes place in the following three conditions: 1.When an insufficient dead time is detected in theprevious switching cycle. When the DETL becomes HIGH within 125ns of the detection window after SR gate is turned off, the SR gate drive signal in the next switching cycle is reduced by t SHRINK-DT (about 1.25µs) to increase the dead time as shown in Figure 14.Printed Circuit Board LayoutIn Figure 18, the power traces are marked as bold lines. Good PCB layout improves power system efficiency and reliability and minimizes EMI.GuidelinesFor feedback detection, the FD pin should be connected to the anode of the opto diode. Connecting the FD pin through a resistor can improve surge immunity of the system. Keep trace 1 away from any power trace with high pulsating current.The control ground (trace 2) and power ground (trace 7) should meet at a single point to minimize interference.The connecting trace should be as short as possible. As indicated by 4, the ground of the feedback loop should be connected to the negative terminal ofoutput capacitor C O.Trace 5 should be long and far from V o terminal.Keep trace 6 as short as possible.As indicated by 7, the source terminals of Q1 and Q2 are connected to the negative terminal of C o. Keep trace 10 short, direct, and wide.As indicated by 8, the negative terminal of C o should be connected to the case directly.Design ExampleThe following example is a 12V/300W single output power supply with LLC resonant converter topology. As Figure 19 shows, the FAN7621 controller is used for the LLC resonant converter. The integrated CCM PFC controller FAN6982 is used for PFC stage.The key system parameters are listed in Table 1 and the Bill of Materials (BOM) is summarized in Table 2.The two-level PFC output voltage function of FAN6982 is used where the typical PFC output voltage is 390V. The PFC output voltage is reduced to 360V for low-line and light-load condition to improve efficiency of the PFC stage. The typical switching frequency (f s) is 65kHz for PFC stage. Table 1. System SpecificationInput Voltage Range 90~264V AC PFC Output 360~390V DC PFC Controller FAN6982 Main power Controller FAN7621 Output Voltage (Vo) 12V Output Power (Po) 300W PFC Switching Frequency65kHzLLC resonant converter Switching Frequency 60~140kHzThe turn ratio n of TX1 is 13.5, L m is 1.2mH, L r is 150µH,and C r is 47nH. 1N4148 is used for D201 & D202 whosevoltage rating is 100V. 27kΩ is used for R204 (R RP) for theLow-Frequency Mode setting.Figure 19. C omplete Circuit DiagramTable 2. Bill of MaterialsPart Value Note Part Value Note Resistor Capacitor R10110Ω1/4W C10810µF 25V R102 3.3Ω1/4W C2013300µF 16V R103 3.3Ω1/8W C2023300µF 16V R10410kΩ1/8W C20347nF 50V R10510kΩ1/8W C20447nF 50V R1061kΩ1/8W C205470nF 25V R1070.2Ω2W C206100nF 50V R108 5.1kΩ1/8W C30122nF/250V Y-Capacitor R1099.1kΩ1/8W TransformerR110 5.6kΩ1/8W TX1L r =10µH/ L m =1200µH PQ3230 R20110kΩ1/8W DiodeR20210kΩ1/8W D101UF1007 1A/1000V R20310kΩ1/8W D1021N4148R20427kΩ1/8W D1031N4148R20510kΩ1/8W D2011N4148R20610kΩ1/8W D2021N4148R20710kΩ1/8W InductorR2081kΩ1/8W L101 L = 150µH QP2914 R20991kΩ1/8W L201 L = 1.8µHR2101kΩ1/8W MOSFETR21133kΩ1/8W Q1FCPF11N60FR21224kΩ1/8W Q2FCPF11N60FCapacitor Q3FDP025N06 C101270µF 450V Q4FDP025N06C1020.33µF 50V ICC103150nF 1kV U1FAN7621 LLC Controller C10447nF 1kV U2PC817C10512nF 50V U3FAN6208 SR Controller C106100pF 50V U4TL431C107680pF 50VFigure 20 and Figure 21 show the SR gate drive waveforms for different R P. As can be seen, the dead time of SR drive can be programmed.Related ResourcesFAN6208 — Secondary Synchronous Rectifier Controller for LLC TopologyFAN7621 — PFM Controller for Half-Bridge Resonant ConvertersFAN6982 — CCM Power Factor Correction ControllerFDP025N06 —FDP025N06 N-Channel PowerTrench® MOSFET 60V,265A, 2.5mΩ1N/FDLL 914/A/B / 916/A/B / 4148 / 4448 — Small Signal DiodeFSFR2100 — Fairchild Power Switch for Half-Bridge Resonant ConvertersAN4137 — Design Guidelines for Off-line Flyback Converters Using Fairchild Power Switch (FPS)AN-4151 — Half-Bridge LLC Resonant Converter Design Using FSFR-Series Fairchild Power Switch (FPS)DISCLAIMERFAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.LIFE SUPPORT POLICYFAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION.As used herein:1. Life support devices or systems are devices or systemswhich, (a) are intended for surgical implant into the body, or(b) support or sustain life, or (c) whose failure to performwhen properly used in accordance with instructions for use provided in the labeling, can be reasonably expected toresult in significant injury to the user. 2. A critical component is any component of a life supportdevice or system whose failure to perform can be reasonably expected to cause the failure of the life support device orsystem, or to affect its safety or effectiveness.。

6208轴承的用途

6208轴承的用途

6208轴承是一款深沟球轴承,其用途广泛,包括但不限于以下领域:
1. 工业设备:如木工机械、输送机械、挤压机、工程液压油缸、工业用品、仪器仪表、机床主轴、轧钢机齿轮箱座等。

2. 反应设备:如反应釜、管式反应器、塔式反应器、闭式反应釜、高压反应釜等。

3. 干燥设备:如微波干燥设备、制粒干燥设备、空心桨叶干燥机、箱式干燥设备、蒸发器等。

4. 其他设备:如种植机械、烫印机、纺织配件、裁断机、曲线导轨、磁选设备、静电发生设备、对焊焊机、纺织器材、攻丝机、消音降噪设备、摆线减速机、熨烫机、注塑机配件、厨房设备、挖掘装载机、切带机、切条机、编织机、绷缝机、包边机、刺绣机、钉扣机、开袋机、厚料机、高头车等。

此外,6208轴承还可以根据特定需求,应用于不同的领域和场合。

请注意,以上只是一些常见的用途示例,实际使用时应根据具体情况选择合适的轴承类型和规格。

士兰微电子 SC46208 1.25MHz 600mA 高效率同步降压型 DC-DC 转换器 说明书

士兰微电子 SC46208 1.25MHz 600mA 高效率同步降压型 DC-DC 转换器 说明书



符号
测试条件
最小值 典型值 最大值 单位
输入电压范围
VIN
2.5
5.5 V
反馈电压
FB 仅对于输出电压可调版
0.585 0.6 0.615 V
静态电流(轻载省电模式) Iswitch off FB=0.62V,或者VOUT=103%
20 30 μA
静态电流(关机状态模式) Ist 静态电流(PWM工作模式) Iq
减,从而防止失控;当输出电压上升后,振荡器的频率逐渐上升到1.25MHz。
过压检测 过压检测电路检测到输出电压超过设定值的6%时,通过关断PMOS开关管防止输出电压的瞬
态过冲,直至电压值降到设定值。
限流及过热保护 限流通过一个内部比较器实现,将PMOS管每个周期的电流值限制在1.5A(典型值),从而使
SC46208 自动检测负载电流的大小,当负载电流降低至某一门限值(该门限值同输入、输出 电压以及电感值有关),系统启动省电模式,此时系统仅消耗 20μA 的电流,从而大大提高了轻负 载时的转换效率。需要注意的是此时输出电压纹波通常会增加,可在 VOUT 和 FB 之间增加一个 相位超前电容(通常在 pF 量级)减小省电模式的纹波。
条件下的效率,从而进一步延长了便携式系统中电池的使用 应用
寿命。
SC46208具备输出电压可调型和固定型版本。
* 蜂窝电话
* 个人数字助理
主要特点
* 无线通讯装置
* 效率高达95% * 轻负载自动进入省电模式,仅需20μA静态电流。 * 宽输入电压范围:+2. 5V~+5.5V
* MP3播放机 * 数码相机 * 便携式仪器
版本号:1.1 2008.09.10 共11页 第1页

FairchildFAN6208LLC电源同步整流控制方案

FairchildFAN6208LLC电源同步整流控制方案

Fairchild FAN6208 LLC电源同步整流控制方案关键词:电源管理,AC/DC转换器,开关电源,LLC,Fairchild 公司的FAN6208是用于绝缘的LLC或LC谐振转换器的同步整流(SR)控制器,能驱动两个单独SRMOSFET,通过监测每个SR的漏-源极电压来测量每个开关周期的SR导通时间,从而确定SR栅极驱动的最佳时间.具有先进的输出短路/过载保护以及超温保护(OTP),主要用在LCD TV, PC电源和开架开关电源.本文介绍了FAN6208主要特性,方框图,应用电路图以及FEBFAN6208_CP433v1评估板主要指标,电路图,材料清单和PCB布局图.FAN6208 is a synchronous rectification (SR) controller for isolated LLC or LC resonant converters that can drive two individual SR MOSFET s emulating the behavior of rectifier diodes. FAN6208 measures the SR conduction time of each switching cycle by monitoring the drain-to-source voltage of each SR and determines the optimal timing of the SR gate drive. FAN6208 uses the change of opto-coupler diode current to adaptively shrink the duration of SR gate drive signals during load transients to prevent shoot-through. T o improve lightload efficiency, Green-Mode operation is employed, which disables the SR drive signals, minimizing gate drive power consumption at light-load condition.Optimal timing circuits and protection functions are integrated in an 8-pin SOP package, which allows highefficiency power supply design with fewer ponents.FAN6208主要特性:♣ Specialized SR Controller for LLC or LC Resonant Converters♣Secondary-Side Timing Detection with Timing Estimator♣Gate-Shrink Function to Prevent Shoot-Through During Load and Line Transient♣Green-Mode Function for Higher Efficiency at Light- Load Condition♣ Programmable Dead Time between Primary-Side Gate Drive Signal and SR Drive Signal♣ Advanced Output-Short / Overload Protection Based on the Feedback Information♣Internal Over-T emperature Protection (OTP)♣VDD Pin Over-Voltage Protection (OVP)FAN6208应用:♣ LCD TV♣ PC Power♣Open-FrameSMPS图 1.FAN6208方框图图 2.FAN6208应用框图图 3.FAN6208应用电路图图3应用电路图主要指标:FEBFAN6208_CP433v1评估板This user guide supports the FAN6208 Secondary-Side Synchronous Rectifier evaluation board.FEBFAN6208_CP433v1评估板主要指标:图4.FEBFAN6208_CP433v1评估板外形图图5.FEBFAN6208_CP433v1评估板电路图FEBFAN6208_CP433v1评估板材料清单:.aoelectronics..aoelectronics./main.php.aoelectronics..aoelectronics.图6.FEBFAN6208_CP433v1评估板PCB布局图:上,顶部;下,底部。

方菱数控 F16208 F16209型 弧压调高器总线控制台 使用说明书

方菱数控 F16208 F16209型 弧压调高器总线控制台 使用说明书

弧压调高器总线控制台使用说明书(V1.0)(F16208、F16209)上海交亿数控设备有限公司2021-06使用注意事项阅读手册本说明书适用于上海交亿数控设备有限公司生产的F16208/F16209系列弧压调高器总线控制台。

使用前请认真阅读该使用说明书和当地安全条例。

注意:1) 由于本产品的不断改进,本手册中涉及的技术参数以及硬件参数如有修改,恕不另行通知。

如果您对本产品有其他疑问或者看法而本说明书内容未尽其详,请及时提出咨询,我们将很乐意回答您提出的问题、建议和批评。

再次感谢贵公司的选择和信任。

2) 本产品的设计不适合现场维护,如有任何维护要求,请联系电话:************传真:************E-mail:*****************环境要求●本调高器总线控制台适宜工作在环境温度为0℃至50℃,相对湿度5-95%无凝结。

●工作电压:F16208:额定电压:直流5伏(DC 5V)。

F16209:面板额定电压:直流5伏(DC 5V)。

分压板额定电压:直流24V(DC 24V)。

●本调高器总线控制台应当安装在具有保护粉尘的控制台外壳内。

●本调高器总线控制台最好在远离高压高频等高辐射性的场合使用。

维护●该设备应该且只能由受过培训的人操作。

●不是本公司授权的技术人员,严禁自主拆缷机器。

●使用时,切勿溅泼酸性、碱性、腐蚀性等物品到调高器及分压板上。

●不使用时,请及时关闭调高器的电源。

安全注意事项●本设备会接入高压,不慎接触高压部分会伤人致死。

电源接通时,不能接触电线及电缆。

●必须按照装箱件规定步骤及要求进行安装。

●调高器标识为接地的端子必须良好接地。

使用前注意事项●正确接入弧压电缆:等离子弧压引入线、碰撞检测电缆必需准确接入相应的端子,接错将导致危险。

●保护帽定位接线要求:等离子阳极电缆必须接到工件上才可进行保护帽碰撞检测及保护帽初始定位操作。

●采用屏蔽电缆接线:为保护本设备正常运行,保证CAN总线通信工作正常,请将本设备所有电缆(包括调高器到CNC的电缆等)采用屏蔽电缆。

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此硬件介绍与维修文档仅作为维修时的参考,对于保修手机,NCP在进行硬件更 换或者焊接维修时都必须按照NOKIA的现行保修政策进行。对涉及到超出维修范 畴的部分,NCP需将手机送往三级维修中心进行维修。
一、二级维修中心人员进行任何私自的硬件焊接维修或者越权更换配件都可能造 成客户手机保修失效,最终影响客户利益。所带来的损失也将由维修中心人员自 己承担。
频带: GSM三频:900MHz/1800MHz/1900MHz
显示屏: LCD: 2.4寸 QVGA (240x320 像素),1670万色TFT
照相机: 320万像素,自动对焦,8倍数码变焦, 双LED闪光灯
操作系统: S40
连接: 无线:蓝牙2.0(支持立体声) 接口:Micro USB 接口,3.5mm AV接口 机身内存13M,最大支持8GB Micro SD 手写板阻抗匹配问题造成VDD电压波动大,从而 计算错误,尽量更换阻值相同的手写板,建议增 加X+ Y+端电容试验。
中间间隔物点距或材质造成手写时接触的位置过 多,更换好质量的触摸解决。
校准时无法通过,建议格式化,消除前触摸板的 起始---终止坐标的记忆,重新建立绝对位置数 据(也跟阻抗有关系)。
Betty(N2300): BB5第二个能量管理器,功能如下: 产生核心电压(VCORE) 充电控制电路 电平转换器和给USB/FBUS调压器 电池电流测量的计流器 外部背景灯的驱动控制接口 数字接口(CBUS)
© 2008 Nokia
3、主要元器件简介
TMX320DM5012ZAN(N1400) 照相机硬件加速器,负责管理照相功能。与6210s一样。
结构,通常是玻璃。

缺点:电阻触摸屏的多层结构会导致很大的光损
失,对于手持设备通常需要加大背光源来弥补透
光性不好的问题,但这样也会增加电池的消耗。

优点:电阻式触摸屏它的屏和控制系统都比较便
宜,反应灵敏度也很好。
© 2008 Nokia
附:触摸屏知识简介
Y座标采集简化示意图
© 2008 Nokia
照相机接口电路:
© 2008 Nokia
5、照相机电路原理
闪光灯电路:
该电路使用了与3600s、6210s、n79、n85、5800等相同的闪光灯驱动IC。
© 2008 Nokia
6、主板元件及 主要信号测量点
© 2008 Nokia
6、主板元件及 主要信号测量点
© 2008 Nokia
7、说明
TSC2004(N2450) 触摸屏控制IC。与5800一样。
LP3929TMEX(N3200) 存储卡电平转换IC,负责卡供电和电平转换。与5220、3600s、7310s、5130、N78等一样。
RF IC(N1001) BB5射频芯片,它集成了VCO,VCTCXO,滤波器等所有外围器件。 使用这种结构的如5310、3600s、5130等。
China Care/Go To Market
6208c硬件介绍
HMX
2009年5月
1
主要内容
1、手机参数 2、产品框图 3、主要元器件简介 4、触摸屏控制电路原理 5、照相机电路原理 6、主板元件及主要信号测量点 7、说明 附:触摸屏知识简介
© 2008 Nokia
1、手机参数
FEM(N1002) BB5的前端模块,集成了双工、功放等电路。 使用这种结构的如5310、3600s、5130等。
© 2008 Nokia
4、触摸屏控制电路原理
PINTDAV低电平时发起触摸请求
© 2008 Nokia
5、照相机电路原理
供电电路:
© 2008 Nokia
5、照相机电路原理
Thanks! Q&A?
© 2008 Nokia
埃=10-10米)以下时会突然变得透明,透光率为80%,再薄下去透光率反而下降,到300埃厚度 时又上升到80%。 通过调整铟和锡的比例,沉积方法,氧化程度以及晶粒的大小可以调整这种物质的性能。薄的ITO 材料透明性好,但是阻抗高;厚的ITO材料阻抗低,但是透明性会变差。在PET聚脂薄膜上沉积时 ,反应温度要下降到150度以下,这会导致ITO氧化不完全,之后的应用中ITO会暴露在空气或空气 隔层里,它单位面积阻抗因为自氧化而随时间变化。这使得电阻式触摸屏需要经常校正。 ITO是所有电阻技术触摸屏及电容技术触摸屏都用到的主要材料,实际上电阻和电容技术触摸屏的 工作面就是ITO涂层。
© 2008 Nokia
附:触摸屏知识简介
按照触摸屏的工作原理和传输信息的介质,触摸屏大致分为四种: 1、电阻式触摸屏 2、电容式触摸屏 3、红外线式触摸屏 4、声表面波式触摸屏
电阻屏的核心------ITO ITO是铟(yin)锡氧化物的英文缩写,它是一种透明的弱导电体,特性是当厚度降到1800个埃(1
© 2008 Nokia
附:触摸屏知识简介

电阻式触摸屏结构:

手指触摸的表面是一个硬涂层,用以保护下面的
PET层。PET层是很薄的有弹性的PET薄膜,当表面
被触摸时它会向下弯曲,并使得下面的两层ITO涂
层能够相互接触并在该点连通电路。两个ITO层之
间是约千分之一英寸厚的一些隔离支点使两层分
开。最下面是一个透明的硬底层用来支撑上面的

电阻式触摸屏工作原理:
由软件控制,启动连续数据采集过程,每一个 点的数据采集两次,首先将VDD加到Y+ Y-端,然 后通过X+采集电压数据,通过A/D转换计算出Y做 标,然后将VDD加到X+ X-端,然后通过Y+采集电 压数据,通过A/D转换计算出X座标,从而得到准确
的点,通过一组点计算出路线,再根据不同的界 面得到不同的反馈结果-----写字 或 控制等等。
该处理器的工作条件: 电压:
VCORE=1.35V(Local模式),来自于Betty,休眠模式下降为1.05V VIO=1.8V,来自于Avilma VRFC=1.8V,来自于Avilma(启动后)
时钟: RFCLK=38.4MHz系统时钟,来自于射频IC SLEEPCLK=32.768KHz休眠时钟,来自于Avilma
• 使用BL-4S 锂电池 • 通话时间上限约为3.5小时, 待机时间上限约为300小时(基于网络条件)
© 2008 Nokia
2、产品框图
© 2008 Nokia
3、主要元器件简介
RAPS(D2800): 核心处理器,S表示存储器是焊接在RAP之上。 (使用这种处理器的如5310、5220、3600s、5130、7310s等)
© 2008 Nokia
3、主要元器件简介
Avilma(N2200):BB5主能量管理器,功能如下: 开机逻辑和复位控制 充电器的检测和电池电压监测 32K时钟和外部振荡器 实时时钟和外部备用电池 UI接口包括SIM卡接口,振子控制 A/D、D/A转换器 调压器(VRCP1、VSIM1、 VSIM2、VRFC、VR1、VIO、VDRAM、VAUX、VANA、VREF) 数字接口(CBUS)
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