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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM8S207MB датащи(PDF) 64 Page - STMicroelectronics |
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STM8S207MB датащи(HTML) 64 Page - STMicroelectronics |
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64 / 103 page  Electrical characteristics STM8S207xx, STM8S208xx 64/103 Doc ID 14733 Rev 12 10.3.3 External clock sources and timing characteristics HSE user external clock Subject to general operating conditions for VDD and TA. Figure 16. 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 31. HSE user external clock characteristics Symbol Parameter Conditions Min Typ Max Unit fHSE_ext User external clock source frequency 024 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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