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STM8S005C6T6 bảng dữ liệu(PDF) 67 Page - STMicroelectronics |
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STM8S005C6T6 bảng dữ liệu(HTML) 67 Page - STMicroelectronics |
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67 / 103 page ![]() Figure 17: HSE external clocksource V HSEH V HSEL External clock source OSCIN fHSE STM8 HSE crystal/ceramic resonator oscillator The HSE clock can be supplied with a 1 to 16 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 oscillator characteristics Unit Max Typ Min Conditions Parameter Symbol MHz 16 1 External high speed oscillator frequency fHSE kΩ 220 Feedback resistor RF pF 20 Recommended load capacitance (2) C (1) mA 6 (startup) C = 20 pF, HSE oscillator power consumption IDD(HSE) 1.6 (stabilized) (3) fOSC = 16 MHz 6 (startup) C = 10 pF, 1.2 (stabilized) (3) fOSC =16 MHz mA/V 5 Oscillator transconductance gm ms 1 VDD is stabilized Startup time tSU(HSE) (4) (1) C is approximately equivalent to 2 x crystal Cload. 67/103 DocID022186 Rev 3 Electrical characteristics STM8S005K6 STM8S005C6 |
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