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STR91XF Arkusz danych(PDF) 51 Page - STMicroelectronics |
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STR91XF Arkusz danych(HTML) 51 Page - STMicroelectronics |
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51 / 73 page ![]() STR91xF Electrical characteristics 51/73 6.7 Main oscillator electrical characteristics VDDQ = 2.7 - 3.6V, VDD = 1.65 - 2V, TA = -40 / 85 °C unless otherwise specified. Table 11. Main oscillator electrical characteristics 6.8 RTC oscillator electrical characteristics VDDQ = 2.7 - 3.6V, VDD = 1.65 - 2V, TA = -40 / 85 °C unless otherwise specified. Table 12. RTC oscillator electrical characteristics Notes: 1 Min oscillator start voltage is the same as low voltage detect level (2.4V or 2.7V) for VDDQ Table 13. RTC crystal electrical characteristics Symbol Parameter Test Conditions Value Unit Min Typ Max tSTUP(OSC) Oscillator Start-up Time Stable VDDQ 3mS Symbol Parameter Test Conditions Value Unit Min Typ Max gM(RTC) Oscillator Start _voltage LVD 1) V tSTUP(RTC) Oscillator Start-up Time Stable VDDQ 1S Symbol Parameter Test Conditions Value Unit Min Typ Max fO Resonant frequency 32.768 kHz RS Series resistance 40 k Ω CL Load capacitance 8 pF |
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