PSOC3 RTC中使用什么类型的电池来保持时间和日期？

RTC是PSoC设备内部的一个独立的块。对于RTC的功能，芯片需要以通常的方式供电（通过电源引脚，Vddd，Vdda）。然而，为了使RTC连续工作并减少功耗，该装置可以进入休眠状态。这里可用的示例项目演示了相同的HTTP://wwwyCypC.com／？RID＝38727与适当设计的板以减少泄漏等，可以使RTC以1UA电流消耗工作在睡眠模式中。



     以下为原文
  

    
    

• For RTC is an independent block inside PSoC device. For RTC to be functional the chip needs to be powered the usual way(via the supply pins, Vddd, Vdda). However to have the RTC functioning continuosuly and reduce powere consumption, the device can be put to sleep.    
  
• The example project available here demonstrates the same, http://www.cypress.com/?rID=38727    
  
• With properly designed board to reduce leakages etc, it is possible to have the RTC functioning in sleep mode with 1uA current consumption.   
  

   
     
   

谢谢你的建议，实际上，我想知道，如果主电源关闭，我怎么仍然可以使功能的RTC，我是否应该使用硬币大小的电池…也可以使用其他电池。在开发工具包中，有9V电池供应，在实时的现场条件下，可以建议电池，请告诉我…



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  thanks for the suggestions uday,, actually i want to know if the main supply goes off how can i still make function the RTC, whether shall i use a coin size battery .. or anyother battery can  be used.. in the development kit, a 9v battery provision is there,,, in real time field conditions, which battery can be suggested,, please tell me...

睡眠模式中的RTC消耗约1 UA，这意味着具有RTC的PSoC3可以在睡眠模式下在硬币电池上运行。然而，当设备脱离休眠模式时，硬币电池可能不能提供足够的电流。因此，您可能不得不切换电源以使PSoC在活动模式下运行。



     以下为原文
  The RTC in sleep mode consumes about 1 uA, that means PSoC3 with RTC can operate on a coin cell in sleep mode. However when the device comes out of sleep mode, a coin cell may not be able to provide sufficient current. So you may have to switch the power source to have PSoC operational in active mode.

事实上，我对先前的反应一无所知，我的要求是这样的，外部电源会定期向VDDD和VDDIO引脚提供电源，RTC会连续运行，如果突然断电，固件将不运行，RTC将不工作，因此，我需要使用主电源，如果电源关闭，我应该有一些电池电源运行至少RTC，如果电源再次出现，RTC和固件应该运行…



     以下为原文
  actually i am not getting any idea with the earlier responses,, my requirement is like this, external power source will be regularly supplying the power to VDDD and VDDIO pins,, with that  RTC will run continously, if suddenly the power goes off,  the firmware will not run and the RTC will not work,, so i need to use the main power supply and if power goes off i should have some battery power to run atleast the RTC, and if the power comes again the RTC and the firmware should run...

在PSOC3/PSoC5中没有专用的引脚来提供RTC。RTC是一个独立的硬件模块，它不需要其他的初始化代码比它运行任何固件的参与。如果芯片断电，整个芯片的操作包括时钟停止。因此，一种可能的实现可能有双电源供电，一个从主电源，另一个来自一个可驱动RTC电池。当主电源的双电源应能切换到电池和PSoC3可以进入睡眠模式以降低功耗的要求和运行在电池。
-U2



     以下为原文
       In PSoC3/PSoC5 there are no dedicated pins to supply the RTC. The RTC is an independent hardware block, it does not need any firmware involvement other than the initialisation code for it to operate. If the chip is powered down, the entire chip operation including the RTC stops. Hence a possible implementation might be to have dual supply, one from the main supply and another from a battery that can drive the RTC. When the main power goes of the dual supply should be able to switch to the battery and PSoC3 can enter sleep mode to reduce power requirement and run on the battery.
     -U2
   

我试图用外部电源和电池电源来实现我的应用，以保持RTC参数。我不能实现升压转换器逻辑，所以你可以给我一些应用笔记来实现升压转换器逻辑，如果有的话，请给我一些代码示例或设计文档。我正在使用CY8CKIT-09开发工具包…



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  I was trying to implement my application with both external and battery power supply, for retaining the RTC parameters. i am not able to implement the BOOST CONVERTER LOGIC,, SO CAN U GIVE me SOME application notes for  implementing the boost converter logic, and if available please give me some code examples or design documents. i am working with the CY8CKIT-009 development kit....
   
 

你好，
我们正在做一个应用说明，详细介绍升压转换器配置，部件选择等。目前TRM是参考手册，您可以使用了解升压转换器。然而，以下是你通常需要做的步骤，让你的升压转换器工作：
将升压转换器组件放置在您的TopDebug上，配置组件以获得适当的输入电压（来自电池的电压），输出电压需要从升压和开关频率获得。CY8C38家庭处理器模块（CY8CKIT-09）需要的硬件改变：放置R6、R7、R14、R15、R16、R17、R38。所有的电阻器都是零欧姆电阻（它也可以是一个简单的焊锡泡）。电感器和必要的旁路电容器已经放置在处理器模块上。确保R37和R43到位。请参阅处理器模块示意图，显示相同的。连接到Vbat和VSSD终端之间的电池，你的升压应该与这些变化一起工作。



     以下为原文
  Hi,
    We are working an Application Note that details the Boost Converter configuration, Component selection etc. At the moment TRM is the reference manual you can use to learn about the Boost Converter. However following are the steps that you normally need to do to get your Boost converter working:
   

    

• Place a Boost converter component on your TopDesign, configure the component for appropriate input voltage(voltage from your battery), output voltage desirable from Boost and switching frequency.    
  
• Hardware changes needed on CY8C38 Family processor module(CY8CKIT-009):   
  

   

    

• Place R6,R7,R14,R15,R16,R17,R38. All the resistors are zero ohm resistors(it can be a simple solder bubble as well).    
  
• The inductor and necessary bypass capacitors are already placed on the processor module.    
  
• Make sure that R37 and R43 are in place. Refer to the Processor module schematic that shows the same.    
  
• Connect the battery to between Vbat and VSSD terminal   
  

    Your Boost should work with these changes.

根据你的建议，我已经尝试过，升压转换器逻辑工作良好。现在请提出一些电路开关电源从主（主）到电池…实际上，我已经搜索了一些有电压监视器和后退电池选项的IC。但是电池是5V的。这是不可用的和昂贵的也…我们计划使用1.8V电池来保持PSoC在Boost转换器的帮助下成为休眠模式。我们需要非常快速地将主电源切换到电池。因此，请提出一些电路，当主电源关闭时，将电源切换到电池。



     以下为原文
  according to your suggestions i have tried, the boost converter logic is working fine..now please suggest some circuitry for the switching the powersupply from primary(main) to the battery... actually i have searched some ICs which have voltage monitor and back battery options.. but the battery is of 5V.. which is not available and costly also... and we planned to use 1.8v battery to keep the psoc is sleep mode with the help of boost converter.... we need to switch the main powersupply to battery very fastly.. so please suggest some circuitry for switching the powersupply to battery when main power supply is off...

基于我对这个问题的理解，我可以提出一些可能有帮助的方案。
1）你可以使用电源和电池供电应用schotky二极管隔离。当然你会失去一些降压二极管上的但是你可以设计你的供应，因此
2）如果你想提升来提高电池的电压，你可以使用一个电池输入升压通过二极管的升压输出连接而组成的。VDDS也可以直接连接到电源。二极管将确保电源不回电源升压输出。
3）也有一些有趣的事情可以做。你会用主要的供电容量大的电容器。这会延迟电压迅速下降时电压不。然后你可以使用低电压，使电池组从侧升压变换器。但是即使在这里也需要使用二极管的隔离。



     以下为原文
  Based on my understanding of the question here, might I suggest some scenarios that might help.
    1) You can use both the mains supply and battery supply isolated using schotky diodes. Of course you would lose some of the voltage dropping on the diodes but you can always desing your supplies accordingly
    2) If you want the boost to be used to boost up the battery voltage, you might as well use the boost for a battery input while connecting the boost output to Vdds through a diode. the Vdds can also have a direct connection to the mains supply. The diode would ensure the mains doesnot back power the boost output.
    3) There is also something interesting that can be done. You would use bigger bulk capacitors from the main supply side. This would delay the voltage dropping quickly when the voltage fails. then you can use the low voltage detecet to enable the boost convertor from the battery side. But even here the isolation using diodes is required.

感谢您的建议，我理解您的建议，并实现这一点，请为我提供的阈值电压，用于检测PSCO3中的低电压，改变主电源到电池供电。请给我推荐一个电压监控器IC，它符合我们的要求。我们给5V和3.3V的I/O和PSoC3器件的操作…
等待你的答复很快…



     以下为原文
  Thanks for ur suggestions, i understood ur suggestions and to implement that, please provide me the information for the threshold voltage used for detecting the low voltage in psoc3, for changing the main power supply to battery supply. please suggest me a voltage supervisor IC, which will suite to our requirement.  we are giving 5V and 3.3V for the I/O  and the psoc3 device operation...
    waiting for ur reply soon....

嗨，维吉，
你可以做的是让升压转换器电路像你以前那样操作。现在有两件事你可以做，
通过肖特基二极管将电池连接到VBAT端子。还通过另一个肖特基二极管将主电源连接到VBAT端子。这是助力总是起作用的，供给是孤立的。当主电源下降时，电池将通过二极管传导，并提供升压电路。将电池连接到VBAT端子。通过肖特基二极管连接VBOOST到所有VDDs（VDDA，VDDD，VDDIOs），并通过另一肖特基二极管连接到VDDS的主电源。一旦主电源关闭，由电池供电的升压将为芯片供电。所有您需要的是两个肖特基二极管的低辍学和良好的承载电流能力。



     以下为原文
  Hi viji,
    What you could do is keep the Boost converter circuit operational as you had done earlier. Now there are two things that you could do,
   

    

• Connect the battery via a schottky diode to the VBAT terminal. Also connect the main supply to the VBAT terminal via another schottky diode. This was the Boost is always functional and the supplies are isolated. When the main supply goes down, the battery will conduct through the diode and supply the Boost circuit.    
  
• Connect the battery to VBAT terminal. Connect VBOOST to all VDDs(VDDA,VDDD,VDDIOs) via a schottky diode and connect the main supply to the VDDs via another schottky diode. Once the main supply powers down, Boost that is powered by the battery will power the chip.   
  

    All you need is two schottky diodes of low drop out and of good carrying current capability.

嗨，u2，
我已经尝试通过连接主电源和电池输出到VDDA，VDDD，VDDIO，这是工作罚款。当电源断开时，电池提供升压转换器的电源。这里的问题是，我正在连接电源，这是浪费电力。
我需要一个开关电路，它将检测主电源中的低电压，并切换到电池供电，并保持设备处于活动状态。因此，我需要PSOC3的电压保持电平，选择电压监控器，并且如果u建议一些电路进行快速切换，这将对我们有帮助。…我们正处于最后阶段来完成我们的示意图，所以给我们一个完美的解决这个问题的方法…
等待你的回复…



     以下为原文
  hi u2,
    I have tried by connecting both the main powersupply and battery output to the vdda, vddd, vddio, that is working fine.. when power goes off the battery provides the power with the boost converter. and here the problem is i am connecting both the powersupplies, which is a wastage of power..
    i need a switching circuitry which will detect the low voltage in main supply and switchs to battery supply and keep the device in active state. so i need the thereshold voltage level for the psoc3, to select the voltage supervisor, and also it would be helpful for us if u suggest some circuit  for fast switching. .. we are in our final stage to finsish our schematic, so give us a perfect solution for this problem....
    waiting for ur reply...

嗨，Viji，
有一个简单的解决办法可以解决这个问题。
你可以像你一样把主电源连接到芯片上。并将此主电源连接到电阻分压器网络。设计分压器网络，使分压为已知电压（如1.024伏，约1伏）。将此连接到PSoC上比较器的负输入端，如下图所示。不要启动升压转换器。将正输入端连接到VREF组件，并将其配置为已知电压（1.8伏）。在比较器输出处连接ISR组件，并将其设置为上升沿触发。一旦主电池发生故障，比较器的输出从零变为1，触发中断。在中断中，您可以通过调用API“BooSufSurnSistar（）”来启动Boost操作。注意，你需要放置一个大容量电容器（比如470UF）来保持足够的充电，直到升压转换器开始工作。这样，当主电源为芯片供电时，电池不会耗尽。如果这个味道好的话，请试试这个。另外，我可以向您推荐另一种需要外部组件的方法。
BMP
587.3 K



     以下为原文
  Hi Viji,
    There is one simple solution what could be solve this.
   

    

• You can connect the main supply to the chip as you have done. And connect this main supply to a resistor divider network. Design the divider network such that the divided voltage is a known voltage(say 1.024 Volt, approx 1 Volt). Connect this to negative input terminal of a comparator on PSoC as shown in picture below. Do not start the Boost converter yet.    
  
• Connect the positive input terminal to VREF component and configure it to have known voltage(1.8 Volts).    
  
• Connect an ISR component at the Comparator output and set it to be rising edge triggered.    
  
• Once the main battery fails, the output of the comparator goes from Zero to One, triggering the interrupt. In the interrupt you can start the Boost operation by calling the API, "BoostConv_Start()".    
  
• Note that you need to put a bulk capacitor(like 470uF) to hold enough charge until the Boost converter starts operating.     
  
• This way your battery is not drained when the main supply is powering the chip.   
  

    Please try it this if this soultion is fine. Else i can suggest you another method which requires an external component.

•   Boost.bmp 587.3 K