https://community.nxp.com/t5/MCX-Microcontrollers/MCXC244VFM-ISP-pin-to-stay-in-rom-boot/m-p/2047084#M2506 <P>Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/83226">@dav1</a>,</P> <P>Thanks for your post.&nbsp;&nbsp;</P> <P>For MCXC244, the pin for ISP/rom-boot is the NMI pin. Please refer to the capture in datasheet below:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Celeste_Liu_0-1739952031687.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/324714i31F9974DBBFBC613/image-size/medium?v=v2&amp;px=400" role="button" title="Celeste_Liu_0-1739952031687.png" alt="Celeste_Liu_0-1739952031687.png" /></span></P> <P>Hope it can help you.</P> <P>BRs,</P> <P>Celeste</P> <P>&nbsp;</P> <P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the "ACCEPT AS SOLUTION" button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P> Wed, 19 Feb 2025 08:11:56 GMT Celeste_Liu 2025-02-19T08:11:56Z https://community.nxp.com/t5/MCX-Microcontrollers/MCXC244VFM-ISP-pin-to-stay-in-rom-boot/m-p/2046544#M2502 <P>there is no mentions in the datasheet for MCX C 244 which pin to use for ISP / rom-boot.</P><P>&nbsp;</P> Tue, 18 Feb 2025 17:30:03 GMT https://community.nxp.com/t5/MCX-Microcontrollers/MCXC244VFM-ISP-pin-to-stay-in-rom-boot/m-p/2046544#M2502 dav1 2025-02-18T17:30:03Z https://community.nxp.com/t5/MCX-Microcontrollers/MCXC244VFM-ISP-pin-to-stay-in-rom-boot/m-p/2047084#M2506 <P>Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/83226">@dav1</a>,</P> <P>Thanks for your post.&nbsp;&nbsp;</P> <P>For MCXC244, the pin for ISP/rom-boot is the NMI pin. Please refer to the capture in datasheet below:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Celeste_Liu_0-1739952031687.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/324714i31F9974DBBFBC613/image-size/medium?v=v2&amp;px=400" role="button" title="Celeste_Liu_0-1739952031687.png" alt="Celeste_Liu_0-1739952031687.png" /></span></P> <P>Hope it can help you.</P> <P>BRs,</P> <P>Celeste</P> <P>&nbsp;</P> <P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the "ACCEPT AS SOLUTION" button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P> Wed, 19 Feb 2025 08:11:56 GMT https://community.nxp.com/t5/MCX-Microcontrollers/MCXC244VFM-ISP-pin-to-stay-in-rom-boot/m-p/2047084#M2506 Celeste_Liu 2025-02-19T08:11:56Z