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STLC2500ATR 数据表(PDF) 8 Page - STMicroelectronics |
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STLC2500ATR 数据表(HTML) 8 Page - STMicroelectronics |
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8 / 37 page ![]() Electrical characteristics STLC2500A 8/37 Low power clock specifications The low power clock pin is powered by connecting VDD_IO_B to the wanted supply. Table 7. System clock, sine wave specifications Symbol Parameter Min. Typ. Max. Unit VPP Peak to peak voltage range 0.2 0.5 1.6 V NH Total harmonic content of input signal -25 dBc ZINRe Real part of parallel input impedance at pin 30 60 90 K Ω Table 8. System clock, digital clock DC specifications Symbol Parameter Min. Typ. Max. Unit VIL Low Level input voltage 0.22 * VDD_IO_A V VIH High Level input voltage 0.85 * VDD_IO_A V Table 9. System clock, digital clock AC specifications Symbol Parameter Min. Typ. Max. Unit TRISE 10%-90% rise time 1.5 6 ns TFALL 90%-10% fall time 1,5 6 ns DCYCLE Duty Cycle 45 50 55 % Table 10. Low power clock specifications Symbol Parameter Min. Typ. Max. Unit Duty cycle 30 70 % Accuracy −250 250 ppm |
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