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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F407IG датащи(PDF) 102 Page - STMicroelectronics |
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STM32F407IG датащи(HTML) 102 Page - STMicroelectronics |
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102 / 201 page  Electrical characteristics STM32F405xx, STM32F407xx 102/201 DocID022152 Rev 6 Figure 33. Typical application with a 32.768 kHz crystal 5.3.9 Internal clock source characteristics The parameters given in Table 34 and Table 35 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 14. High-speed internal (HSI) RC oscillator Low-speed internal (LSI) RC oscillator Table 34. HSI oscillator characteristics (1) 1. VDD = 3.3 V, TA = –40 to 105 °C unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit fHSI Frequency - - 16 - MHz ACCHSI HSI user trimming step(2) 2. Guaranteed by design. -- - 1 % Accuracy of the HSI oscillator TA = –40 to 105 °C(3) 3. Guaranteed by characterization. –8 - 4.5 % TA = –10 to 85 °C(3) –4 - 4 % TA = 25 °C(4) 4. Factory calibrated, parts not soldered. –1 - 1 % tsu(HSI)(2) HSI oscillator startup time - - 2.2 4 µs IDD(HSI)(2) HSI oscillator power consumption - - 60 80 µA Table 35. LSI oscillator characteristics (1) 1. VDD = 3 V, TA = –40 to 105 °C unless otherwise specified. Symbol Parameter Min Typ Max Unit fLSI(2) 2. Guaranteed by characterization. Frequency 17 32 47 kHz tsu(LSI)(3) 3. Guaranteed by design. LSI oscillator startup time - 15 40 µs IDD(LSI)(3) LSI oscillator power consumption - 0.4 0.6 µA |
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