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NUC505-YO2G 数据表(PDF) 108 Page - Nuvoton Technology Corporation |
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NUC505-YO2G 数据表(HTML) 108 Page - Nuvoton Technology Corporation |
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108 / 130 page ![]() NUC505 July. 26, 2018 Page 108 of 130 Rev.1.08 AC Electrical Characteristics 7.3 7.3.1 External 12 MHz Crystal t CLCL tCLCX t CHCX tCLCH tCHCL Note: Duty cycle is 50%. PARAMETER SYMBOL MIN. TYP. MAX. UNITS CONDITIO N Clock High Time tCHCX - 41.6 - nS Clock Low Time tCLCX - 41.6 - nS Clock Rise Time tCLCH - - 25 nS Clock Fall Time tCHCL - - 25 nS 7.3.2 External 12 MHz High Speed Oscillator SYMBOL PARAMETER CONDITION MIN. TYP. MAX. UNIT fHXT Input clock frequency External crystal for XIN 12 MHz TA Temperature - -40 - 85 ℃ VHXT VDD - 3.3 V IHXT Operating current 12 MHz@ VDD = 3.3V - 3 - mA 7.3.3 Typical Crystal Application Circuits Crystal Oscillator Capacitance Values Resistance Values 12 MHz 20pF 1 M Ω 32.768 kHz 33pF 10 M Ω |
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