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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM8S007C8 датащи(PDF) 56 Page - STMicroelectronics |
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STM8S007C8 датащи(HTML) 56 Page - STMicroelectronics |
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56 / 92 page  Electrical characteristics STM8S007C8 56/92 DocID022171 Rev 5 9.3.3 External clock sources and timing characteristics HSE user external clock Subject to general operating conditions for VDD and TA. Figure 12. HSE external clock source HSE crystal/ceramic resonator oscillator The HSE clock can be supplied with a 1 to 24 MHz crystal/ceramic resonator oscillator. All the information given in this paragraph is based on characterization results with specified typical external components. 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 start-up stabilization time. Refer to the crystal resonator manufacturer for more details (frequency, package, accuracy...). Table 29. HSE user external clock characteristics Symbol Parameter Conditions Min Typ Max Unit fHSE_ext User external clock source frequency - 0- 24 MHz VHSEH (1) 1. Data based on characterization results, not tested in production. OSCIN input pin high level voltage 0.7 x VDD -VDD + 0.3 V V VHSEL (1) OSCIN input pin low level voltage VSS - 0.3 x VDD ILEAK_HSE OSCIN input leakage current VSS < VIN < VDD -1 - 1 µA OSCIN fHSE External clock STM8 source VHSEL VHSEH |
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