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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F334X4 датащи(PDF) 68 Page - STMicroelectronics |
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STM32F334X4 датащи(HTML) 68 Page - STMicroelectronics |
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68 / 115 page  Electrical characteristics STM32F334x4 STM32F334x6 STM32F334x8 68/115 DocID025409 Rev 5 Figure 16. Typical application with a 32.768 kHz crystal Note: An external resistor is not required between OSC32_IN and OSC32_OUT and it is forbidden to add one. 6.3.8 Internal clock source characteristics The parameters given in Table 40 are derived from tests performed under ambient temperature and supply voltage conditions summarized in Table 19. High-speed internal (HSI) RC oscillator Table 40. HSI oscillator characteristics(1) 1. VDDA = 3.3 V, TA = –40 to 105 °C unless otherwise specified. Symbol Parameter Conditions Min. Typ. Max. Unit fHSI Frequency - - 8 - MHz TRIM HSI user trimming step - - - 1(2) 2. Guaranteed by design, not tested in production. % DuCy(HSI) Duty cycle - 45(2) -55(2) % ACCHSI Accuracy of the HSI oscillator (factory calibrated) TA = –40 to 105 °C –2.8(3) 3. Data based on characterization results, not tested in production. -3.8(3) % TA = –10 to 85 °C –1.9(3) -2.3(3) TA = 0 to 85 °C -1.9(3) -2(3) TA = 0 to 70 °C -1.3(3) -2(3) TA = 0 to 55 °C –1(3) -2(3) TA = 25 °C(4) 4. Factory calibrated, parts not soldered –1 - 1 tsu(HSI) HSI oscillator startup time -1(2) -2(2) µs IDDA(HSI) HSI oscillator power consumption - - 80 100(2) µA |
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