During emulation mode, the watchdog timer can or cannot continue to run, according to the value of the WDSC[5] EMUFREE bit of the system configuration register (WDSC).
When EMUFREE is 1, watchdog timer execution is not stopped and a reset pulse is still generated when overflow is reached.
When EMUFREE is 0, the counters (prescaler/timer) are frozen and incrementation restarts after exiting emulation mode.