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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F410RB датащи(PDF) 82 Page - STMicroelectronics |
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STM32F410RB датащи(HTML) 82 Page - STMicroelectronics |
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82 / 142 page  Electrical characteristics STM32F410x8/B 82/142 DocID028094 Rev 5 The LSE high-power mode allows to cover a wider range of possible crystals but with a cost of higher power consumption. Note: For information on selecting the crystal, refer to the application note AN2867 “Oscillator design guide for ST microcontrollers” available from the ST website www.st.com. For information about the LSE high-power mode, refer to the reference manual RM0401. Figure 22. Typical application with a 32.768 kHz crystal Table 41. LSE oscillator characteristics (fLSE = 32.768 kHz) (1) 1. Guaranteed by design. Symbol Parameter Conditions Min Typ Max Unit RF Feedback resistor - - 18.4 - M Ω IDD LSE current consumption Low-power mode (default) -- 1 µA High-drive mode - - 3 Gm_crit_max Maximum critical crystal gm Startup, low-power mode - - 0.56 µA/V Startup, high-drive mode - - 1.50 tSU(LSE)(2) 2. tSU(LSE) is the startup time measured from the moment it is enabled (by software) to a stabilized 32.768 kHz oscillation is reached. This value is guaranteed by characterization. It is measured for a standard crystal resonator and it can vary significantly with the crystal manufacturer. startup time VDD is stabilized - 2 - s |
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