SLAAEO4 November 2025 MSPM0G3507 , MSPM0L1306
When the device enters STOP or STANDBY mode, the AHB-AP (ARM Debug) core is undiscoverable, making the device enter a locked state. To actively connect to the AHB-AP, verify that the debugger first connects the PWR-AP. For more details, refer to the Hardware Programming and Debugger Guide for MSPM0 application note.
XDS110 support connecting device in STOP or STANDBY mode. For other 3rd party debuggers, such as J-Link, try the latest software version which fixes this low-power mode debug issue.