PIC18F25K80I/SS项目不能正常工作

两个芯片“I/SS”和“I/SO”的修订是什么？



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What revision are the two chips  "i/ss" and "i/so" ?

修订I/SS（1734 H7U）和I/SO（1636SEZ）。



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    The revision i/ss (1734h7u) and i/so (1636sez).

这是编程/调试工具在Connect上报告的修订吗？



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Is this the revision as reported by the programming/debug tool on connect ?

那些看起来像印在芯片上的日期代码。



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    Those look like date code printed on the chips.
 

是的，下一个问题是“有关于芯片修订的勘误表吗？”



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yes, the next question "is there errata relating to the chip revisions ?"

对不起，我想它是印在照片上的。如何阅读修订ID？我使用的是MPLABX V4.01和PICIT 2。



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    Sorry, I thought it was printed on the PIC. How to read revision ID? I'm using the mplabX v4.01 and Pickit 2.
 

我以前从未使用过PACKIT2，但这就是我刚才发现的Google：http://电子…堆栈…AR pic微控制器。



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    I have never used the PICkit2 before, but this is what I found googling just now: 
 
https://electronics.stack...ar-pic-microcontroller

这就导致了Twitt//www. McCHIP.COM/FUMMS/M216938ASPX



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    which leads to this  http://www.microchip.com/forums/m216938.aspx

我没有一个皮卡2，并且在MpLabX连接芯片号和修订版时，在调试器上不再使用MPLABX 4.01（我使用4.15），在一个窗口中显示。在“仪表板”中有一个“刷新连接”图标。



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    I do not have a PicKit 2 and no longer use MpLabX 4.01 ( I use 4.15 )
On my debuggers when MpLabX connects the chip number and revision are displayed in one of the windows.
In the "Dashboard" there is a "refresh connection" icon
   Attached Image(s)

这些都是修订版A6。（第二个代码实际上是1636SE2）。BTW. PICKIT 2不再支持，并且不显示所有设备的正确版本。SS和SO是不同的软件包，需要不同的PC足迹。我假设你有不同的PC布局来适应每个设备。你确信这两个电路是相同的吗？



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Those are both Revision A6. (the second code is actually 1636SE2).
BTW. The PICkit 2 is no longer supported and does not display the revision properly for all devices.
 
The SS and SO are different packages requiring different PC footprints. I assume you have separate PC layouts to accommodate each device. Are you confident that both circuits are identical?
 

我得到了这些数字：I/SS:848 A（33930）I/SO：D47 E（54398）。我观察到这个值在校验和的右边，正如它在另一个论坛中解释的那样。



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    I got these numbers:
i/ss : 848A (33930)
i/so : D47E (54398).
I observed this values to the right of the Checksum as it in the other forum explained.
 

对。电路是一样的。当我在PIC的电源中添加电容器时，项目正常工作。它们之间有什么区别吗？



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    Yes. The circuits are the same. When I add a capacitor in the power supply of the pic the project normally works.  Is there any difference between them?

这听起来像电源旁路是边缘的，改变到PCB铺设以适应不同的PIC引脚可以很容易地使边缘绕过不足。



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THis sounds like the power supply bypassing is marginal, changes to the pcb layput to accomodate a different pinout of the pic could easily make marginal bypassing insufficient.

如果你告诉我们“不正确工作”意味着什么，这肯定会有帮助。SOIC和SSOP包应该有相同的插脚，但是正如其他人指出的，你需要两个PCB布局来适应它们。你确定你在两个包装上都正确地处理了所有重要的插脚吗？这是一个简单的错误，可以解释很多。如果这个部分根本不会运行，你看过OSC引脚吗？两者都有大致对称的波形吗？这假设你使用的是外部晶体，我假设你是，如果你正在使用，以确保您得到准确的位定时。但是，这只是一个推论，因为我们没有关于你正在做什么，什么是不工作等的数据。我们在这个设计中使用了这个精确的一系列部件，而且它工作得很完美。我们会尽力帮助你，但我们对你的处境一无所知。你分享的越多，我们的帮助就越好。



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It sure would help if you told us what "does not work correctly" means.
 
The SOIC and SSOP packages should have identical pinouts, but as someone else noted you will require two PCB layouts to accommodate them. Are you sure that you've handled all of the important pins properly on both packages? This is an easy mistake and could explain a lot.
 
If the part won't run at all, have you looked at the OSC pins? Do you have roughly symmetrical waveforms on both? This presumes you're using an external crystal, which I presume you are if you're using CAN to insure you get accurate bit timing. But again, that's just a presumption because we have zero data about what you're doing, what isn't working, etc.
 
We're using this exact family of parts in a present design, and it's working perfectly. We'll try to help but we're totally in the dark about your situation. The more you share, the better we can help.