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PSoC 4 MCU

Contributor II

I've just started reviewing the PSoC Analog Coprocessor as want to use it with a pyroelectric sensor for motion detection, but wondered whether I can attach multiple PIR sensors to the chip directly as it appears that the CY8C4Axx chips have multiple opamps. If so what is the maximum number of sensors I can attach and what is the limiting factor (e.g. number of opamps or some other constraint on the chipset).

   

Thanks. 

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Esteemed Contributor II

Welcome in the forum.

   

When you built the project for 1 sensor you can estimate for yourself: on the very right hand side of the Creator 4.0 window is a tab named "Resource Meter". Here you can see how many resources your current project consumes and how many remain.

   

 

   

Bob

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Contributor II

OK thanks.

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Contributor II

That Resource Meter side tab is very helpful (never spotted that before). Looks like the 1.2V Vref generator needs to use an OpAmp resource too. So 3 out of 4 already used. Why is that.

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Esteemed Contributor II

Why is that

   

Take it as it is

   

 

   

Bob

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