5 Replies Latest reply on Oct 11, 2017 8:05 AM by user_242978793

Why can't I route Comparator outputs in CY8C4146 ?

user_62720120 Oct 10, 2017 8:29 AM

I'm trying to use a Comparator component in a CY8C4146LQI-S432.

However, when I try to assign the output to a pin, I find that it won't let me assign it to any of the pins! The only thing I can connect it to seems to be the Quadrature Decoder.

Is this right? Surely the comparator can be used for more things than that?

What am I doing wrong?

Hugo

1. Re: Why can't I route Comparator outputs in CY8C4146 ?

VasanthR_91 Oct 11, 2017 5:25 AM (in response to user_62720120)

Hello Hugo,

Which component are you using ? LP comp or CTB based comparator ? Or is it CSD comparaotor?

Best Regards,
VSRS
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2. Re: Why can't I route Comparator outputs in CY8C4146 ?

user_62720120 Oct 11, 2017 7:00 AM (in response to VasanthR_91)

I'm just using the component called "Comparator"
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3. Re: Why can't I route Comparator outputs in CY8C4146 ?

user_242978793 Oct 11, 2017 7:35 AM (in response to user_62720120)
I used a sample program and added a comparator to it just to try it and it worked I am sending you the example as you have not given us your program to check.

CE210487 ADC with Breathing LED.cywrk.Archive02.zip 1.9 MB
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4. Re: Why can't I route Comparator outputs in CY8C4146 ?

NoriakiT_91 Oct 11, 2017 7:51 AM (in response to user_62720120)

When I put a Comparator component on the CY8C4146AZI-S433, PSoC Creator suggests P3[6] and P3[7] for the Comparator output pin as follows.
It seems that P3[6] and P3[7] are assigned to the dedicated comparator output as ctb_dsi_comp for two CTBms.
The reason why the PSoC Creator do not suggest any pins on CY8C4146LQI-S432 is the QFN32 package does not have both P3[6] and P3[7] pins.

I was looking for a description saying that P3[6] and P3[7] are assigned as dedicated Comparator outputs in the PSoC 4100S datasheet and the PSoC 4100S Technical Reference Manual (TRM) but I found no such descriptions. So, I would like to request to add some descriptions regarding the dedicated Comparator output pins.

Regards,
Noriaki
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5. Re: Why can't I route Comparator outputs in CY8C4146 ?

user_242978793 Oct 11, 2017 8:05 AM (in response to user_242978793)
I am sorry I sent you the wrong device so I am sending you the same program with the correct device.. One thing however the device you are using doesn't have a lot of digital resources and you may be running out of resources.

CE210487 ADC with Breathing LED.cywrk.Archive03.zip 2.0 MB
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