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STM32F446MC 数据表(PDF) 104 Page - STMicroelectronics |
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STM32F446MC 数据表(HTML) 104 Page - STMicroelectronics |
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104 / 202 page ![]() Electrical characteristics STM32F446xC/E 104/202 DocID027107 Rev 6 Figure 23. High-speed external clock source AC timing diagram Figure 24. Low-speed external clock source AC timing diagram High-speed external clock generated from a crystal/ceramic resonator The high-speed external (HSE) clock can be supplied with a 4 to 26 MHz crystal/ceramic resonator oscillator. All the information given in this paragraph are based on characterization results obtained with typical external components specified in Table 39. In the application, the resonator and the load capacitors have to be placed as close as possible to the oscillator pins in order to minimize output distortion and startup stabilization time. Refer to the crystal resonator manufacturer for more details on the resonator characteristics (frequency, package, accuracy). |
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