https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-deep-sleep-SWD/m-p/1668654#M52992 <P>Hello, to recovery the board you need to put in ISP mode and erase&nbsp; the flash.</P><P>Best regards,<BR />Pavel</P> Tue, 13 Jun 2023 22:07:12 GMT Pavel_Hernandez 2023-06-13T22:07:12Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-deep-sleep-SWD/m-p/1668316#M52981 <P>Hi, I'm using the LPC51U68 SDK version 2.9.0, and I tried the sample&nbsp;lpcxpresso51u68_utick_wakeup.<BR />After programming this sample, I'm not anymore able to connect the chip for reprogramming or mass erase (via MCUXpresso)<BR />I'm using CMIS-DAP V2.263 on MCU-LINK debug probe<BR />Why the SWD is not working? I searched on U68 documentation, but I have not found any info about.<BR />This is very big issue, I need to have my application that at RESET/POWER ON enters in deep sleep, and awakes fron internal timer or external event (GPIO trigger), but in this case no further FW program/update is allowed!!<BR />Could you help me? How to solve this trouble?</P> Tue, 13 Jun 2023 10:18:05 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-deep-sleep-SWD/m-p/1668316#M52981 abele_barbieri 2023-06-13T10:18:05Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-deep-sleep-SWD/m-p/1668654#M52992 <P>Hello, to recovery the board you need to put in ISP mode and erase&nbsp; the flash.</P><P>Best regards,<BR />Pavel</P> Tue, 13 Jun 2023 22:07:12 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-deep-sleep-SWD/m-p/1668654#M52992 Pavel_Hernandez 2023-06-13T22:07:12Z