I am using a MKL16Z256VLH4 with a 32768 Hz crystal running in lower power mode (HGO=0). The datasheet lists the typical crystal startup time (tsct) as 750 ms, and I do see something like that.
My question is what should I assume for the maximum time. Currently I am using 1 second. The processor is running at 3.0V (+/-4%) and the expected die temperature range is 15C to 45C.