12.2.2.5 Debug Operation
When run-time debugging, this peripheral will continue normal operation. The SLPCTRL is only affected by a break in debug operation: If the SLPCTRL is in a sleep mode when a break occurs, the device will wake up and the SLPCTRL will go to Active mode, even if there are no pending interrupt requests.
If the peripheral is configured to require periodical service by the CPU through interrupts or similar, improper operation or data loss may result during halted debugging.