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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32G0 датащи(PDF) 69 Page - STMicroelectronics |
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STM32G0 датащи(HTML) 69 Page - STMicroelectronics |
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69 / 135 page  DS12232 Rev 4 69/135 STM32G071x8/xB Electrical characteristics 107 5.3.7 External clock source characteristics High-speed external user clock generated from an external source In bypass mode the HSE oscillator is switched off and the input pin is a standard GPIO. The external clock signal has to respect the I/O characteristics in Section 5.3.14. See Figure 16 for recommended clock input waveform. Figure 16. High-speed external clock source AC timing diagram Table 36. Wakeup time using LPUART(1) Symbol Parameter Conditions Typ Max Unit tWULPUART Wakeup time needed to calculate the maximum LPUART baud rate allowing to wakeup up from Stop mode when LPUART clock source is HSI16 Stop mode 0 - 1.7 µs Stop mode 1 - 8.5 1. Guaranteed by design. Table 37. High-speed external user clock characteristics(1) Symbol Parameter Conditions Min Typ Max Unit fHSE_ext User external clock source frequency Voltage scaling Range 1 -8 48 MHz Voltage scaling Range 2 -8 26 VHSEH OSC_IN input pin high level voltage - 0.7 VDDIO1 -VDDIO1 V VHSEL OSC_IN input pin low level voltage - VSS -0.3 VDDIO1 tw(HSEH) tw(HSEL) OSC_IN high or low time Voltage scaling Range 1 7- - ns Voltage scaling Range 2 18 - - 1. Guaranteed by design. MS19214V2 VHSEH tf(HSE) 90% 10% THSE t tr(HSE) VHSEL tw(HSEH) tw(HSEL) |
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