CTRL-030: SAFE mode activated within 45 micro seconds to 10 mili seconds for immediate threats → safe mode should be activated immediately, but 45 ns to 10 ms is typical time for software to detect. (sources: https://s3vi.ndc.nasa.gov/ssri-kb/static/resources/05-2750.pdf)
Depends on the specific STWD100 watchdog, but the timeout periods can very between 3.4 ms, 6.3 ms, 102 ms, and 1.6 s respectively. Typically watchdogs should timeout between 10 - 100 ms, so 102 or less should work in this case, based on our specific watchdog. (sources: https://www.st.com/resource/en/datasheet/stwd100.pdf)