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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F100RC датащи(PDF) 51 Page - STMicroelectronics |
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STM32F100RC датащи(HTML) 51 Page - STMicroelectronics |
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51 / 106 page  DocID15081 Rev 10 51/106 STM32F100xC, STM32F100xD, STM32F100xE Electrical characteristics 105 Figure 11. High-speed external clock source AC timing diagram Figure 12. 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 24 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 22. 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). Table 22. HSE 4-24 MHz oscillator characteristics(1)(2) Symbol Parameter Conditions Min Typ Max Unit fOSC_IN Oscillator frequency - 4 8 24 MHz RF Feedback resistor - - 200 - k Ω ai14140c OSC32_IN External STM32F10xxx clock source VLSEH tf(LSE) tW(LSE) IL 90% 10% TLSE t tr(LSE) tW(LSE) fLSE_ext VLSEL |
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