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M41T60 数据表(PDF) 14 Page - STMicroelectronics |
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M41T60 数据表(HTML) 14 Page - STMicroelectronics |
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14 / 27 page ![]() Clock operation M41T60 14/27 Doc ID 10396 Rev 13 ● 0 = Must be set to '0.' ● CB0, CB1 = century bits ● FT = frequency test bits ● OFIE = oscillator fail interrupt enable bit ● OUT = output level ● S = sign bit ● ST = stop bit Figure 11. Crystal accuracy across temperature Table 2. Register map Address Data Function/range BCD format D7 D6 D5 D4 D3 D2 D1 D0 0 ST 10 seconds Seconds Seconds 00-59 1 OFIE 10 minutes Minutes Minutes 00-59 2 0 0 10 hours Hours Hours 00-23 3 0 0 0 0 0 Day Day 01-07 4 0 0 10 date Date Date 01-31 5 CB1 CB0 0 10 M. Month Century/month 0-3/01-12 6 10 Years Years Year 00-99 7 OUT FT S Calibration Calibration AI07888 –160 0 10203040506070 Frequency (ppm) Temperature °C 80 –10 –20 –30 –40 –100 –120 –140 –40 –60 –80 20 0 –20 = –0.036 ppm/ °C 2 ± 0.006 ppm/°C2 K ΔF = K x (T – T O) 2 F T O = 25°C ± 5°C |
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