NXP TOUCH SENSE SOLUTION

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NXP TOUCH SENSE SOLUTION

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luosui
Contributor I

请问这两张原理图是属于自容式企业微信截图_16740227762794.png企业微信截图_16740228046443.png方案还是互容式方案

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1 Solution
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danielmartynek
NXP TechSupport
NXP TechSupport

Hi Luo Sui,

Yes, that is correct.

View solution in original post

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6 Replies
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danielmartynek
NXP TechSupport
NXP TechSupport

Hi @luosui,

Which two schematics do you compare here?

 

Thanks,

BR, Daniel

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luosui
Contributor I

Hi,Daniel:

Here are the SCH files,Can you tell which kind of cap sensing tech they are using? Please inform me the answer,Thank you,BR.

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danielmartynek
NXP TechSupport
NXP TechSupport

Hello @luosui,

The S32K144 does not have any dedicated touch sense peripheral module, that is why the HW implementation uses GPIO + ADC and two pins per an electrode .

Whereas the KE1xZ MCU has a dedicated TSI module.

 

Regards,

Daniel

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luosui
Contributor I

Hi,Daniel
According to your description:

1. The S32K144 uses GPIO + ADC and two pins per an electrode ,it is self cap sense tech,right?

2. And the KE1xZ MCU has a dedicated TSI module,so it only need one ADC pin and one electrode to fulfill touch sense function.

 

Regards,

luo sui

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danielmartynek
NXP TechSupport
NXP TechSupport

Hi Luo Sui,

Yes, that is correct.

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luosui
Contributor I

Tkanks,BRO,help a lot !

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