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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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STM32F301C6 Fiches technique(PDF) 76 Page - STMicroelectronics |
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STM32F301C6 Fiches technique(HTML) 76 Page - STMicroelectronics |
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76 / 135 page  Electrical characteristics STM32F301x6 STM32F301x8 76/135 DocID025146 Rev 6 For CL1 and CL2, it is recommended to use high-quality external ceramic capacitors in the 5 pF to 25 pF range (Typ.), designed for high-frequency applications, and selected to match the requirements of the crystal or resonator (see Figure 16). CL1 and CL2 are usually the same size. The crystal manufacturer typically specifies a load capacitance which is the series combination of CL1 and CL2. PCB and MCU pin capacitance must be included (10 pF can be used as a rough estimate of the combined pin and board capacitance) when sizing CL1 and CL2. Note: For information on selecting the crystal, refer to the application note AN2867 “Oscillator design guide for ST microcontrollers” available from the ST website www.st.com. Figure 16. Typical application with an 8 MHz crystal 1. REXT value depends on the crystal characteristics. |
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