XT1 crystal as reference 3 V 40% 50% 60% 3 V 0.25% 3 V 0.022% 3 V 200 ms 8.12.3.3 DCO Frequency over recommended operating free-air temperature (unless otherwise noted) (see 図 8-6) PARAMETER TEST CONDITIONS DCORSEL = 101b, DISMOD = 1b, DCOFTRIMEN = 1b, DCOFTRIM = 000b, ...