PSoC4S plus wco

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cross mob
suno_285741
Level 3
Level 3
10 sign-ins 10 replies posted First solution authored

hello

I need a precision oscillator.

so I will use wco as trim source for IMO.

what kind of oscillator should I use?

is this right?

32.768khz Crystal oscillator?

do you have reference code for trim IMO?

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1 Solution
Ekta_N
Moderator
Moderator
Moderator
750 replies posted First like given 250 solutions authored

Hello,

We recommend you to use a 32.768kHz crystal for WCO.

In order to connect the WCO to the device please follow the recommendations as shown in the image below:

pastedImage_0.png

In order to trim IMO using WCO you can just enable the Trim with WCO option. The steps to do this are as followed:

  • In the workspace explorer go to the design wide resources.
  • Select the clock tabs
  • Click on edit clocks
  • Enable the WCO under low frequency clocks tab of configure system clocks dialogue box, as shown in the image below:

pastedImage_6.png

  • Under the high frequency clocks tab, enable trim with WCO option for IMO.

pastedImage_10.png

The IMO will now be trimmed by WCO. This is reflected in the accuracy of IMO.

Best Regards

Ekta

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2 Replies
Ekta_N
Moderator
Moderator
Moderator
750 replies posted First like given 250 solutions authored

Hello,

We recommend you to use a 32.768kHz crystal for WCO.

In order to connect the WCO to the device please follow the recommendations as shown in the image below:

pastedImage_0.png

In order to trim IMO using WCO you can just enable the Trim with WCO option. The steps to do this are as followed:

  • In the workspace explorer go to the design wide resources.
  • Select the clock tabs
  • Click on edit clocks
  • Enable the WCO under low frequency clocks tab of configure system clocks dialogue box, as shown in the image below:

pastedImage_6.png

  • Under the high frequency clocks tab, enable trim with WCO option for IMO.

pastedImage_10.png

The IMO will now be trimmed by WCO. This is reflected in the accuracy of IMO.

Best Regards

Ekta

Hello Ekta

Thanks for your answer.

Regards

sunghun noh

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