https://community.nxp.com/t5/S32K/S32K3-ICU-EXT-ISR-WIFER-Digital-Filter-Option/m-p/2292838#M56097 <P><a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/188029">@Senlent</a>&nbsp;</P><P>Thank you for reply.</P> Tue, 13 Jan 2026 22:37:35 GMT ssean 2026-01-13T22:37:35Z https://community.nxp.com/t5/S32K/S32K3-ICU-EXT-ISR-WIFER-Digital-Filter-Option/m-p/2281596#M55876 <P>Hello.</P><P>&nbsp;</P><P>I am currently reviewing the WKPU (Wakeup Unit) functionality triggered by external interrupts.</P><P>Will setting the ICU_EXT_ISR_WIFERDigital_Filter option to true provide any significant benefits in terms of noise immunity/robustness?</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ssean_0-1767667302711.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/371763i627B2C99179047BA/image-size/large?v=v2&amp;px=999" role="button" title="ssean_0-1767667302711.png" alt="ssean_0-1767667302711.png" /></span></P><P>Additionally, I would like to inquire whether it is mandatory to set 'Standby Enable' to true in the SIRC configuration when this digital filter option is enabled.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ssean_1-1767667332389.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/371764i22CEE82A443C696B/image-size/large?v=v2&amp;px=999" role="button" title="ssean_1-1767667332389.png" alt="ssean_1-1767667332389.png" /></span></P><P>&nbsp;</P><P>Are there any additional settings that need to be configured?</P><P>&nbsp;</P><P>BRs,</P><P>Sean Sung</P><P>&nbsp;</P> Tue, 06 Jan 2026 02:43:17 GMT https://community.nxp.com/t5/S32K/S32K3-ICU-EXT-ISR-WIFER-Digital-Filter-Option/m-p/2281596#M55876 ssean 2026-01-06T02:43:17Z https://community.nxp.com/t5/S32K/S32K3-ICU-EXT-ISR-WIFER-Digital-Filter-Option/m-p/2281685#M55879 <P>Hi@<SPAN>ssean</SPAN></P> <P>Q1,yes</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Senlent_0-1767677969938.png" style="width: 739px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/371790i741A0C96ED1CDFC4/image-dimensions/739x109?v=v2" width="739" height="109" role="button" title="Senlent_0-1767677969938.png" alt="Senlent_0-1767677969938.png" /></span></P> <P>Q2,I don't see any relationship between these two options.</P> Tue, 06 Jan 2026 05:41:01 GMT https://community.nxp.com/t5/S32K/S32K3-ICU-EXT-ISR-WIFER-Digital-Filter-Option/m-p/2281685#M55879 Senlent 2026-01-06T05:41:01Z https://community.nxp.com/t5/S32K/S32K3-ICU-EXT-ISR-WIFER-Digital-Filter-Option/m-p/2292838#M56097 <P><a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/188029">@Senlent</a>&nbsp;</P><P>Thank you for reply.</P> Tue, 13 Jan 2026 22:37:35 GMT https://community.nxp.com/t5/S32K/S32K3-ICU-EXT-ISR-WIFER-Digital-Filter-Option/m-p/2292838#M56097 ssean 2026-01-13T22:37:35Z