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STM32L071X8 Arkusz danych(PDF) 76 Page - STMicroelectronics |
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STM32L071X8 Arkusz danych(HTML) 76 Page - STMicroelectronics |
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76 / 136 page ![]() Electrical characteristics STM32L071xx 76/136 DocID027101 Rev 3 Low-speed external user clock generated from an external source The characteristics given in the following table result from tests performed using a low- speed external clock source, and under ambient temperature and supply voltage conditions summarized in Table 25. Figure 22. Low-speed external clock source AC timing diagram Table 43. Low-speed external user clock characteristics(1) 1. Guaranteed by design, not tested in production Symbol Parameter Conditions Min Typ Max Unit fLSE_ext User external clock source frequency - 1 32.768 1000 kHz VLSEH OSC32_IN input pin high level voltage 0.7VDD -VDD V VLSEL OSC32_IN input pin low level voltage VSS -0.3VDD tw(LSE) tw(LSE) OSC32_IN high or low time 465 - - ns tr(LSE) tf(LSE) OSC32_IN rise or fall time - - 10 CIN(LSE) OSC32_IN input capacitance - - 0.6 - pF DuCy(LSE) Duty cycle - 45 - 55 % IL OSC32_IN Input leakage current VSS VIN VDD -- ±1 µA |
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