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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32G431C6 датащи(PDF) 102 Page - STMicroelectronics |
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STM32G431C6 датащи(HTML) 102 Page - STMicroelectronics |
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102 / 198 page  Electrical characteristics STM32G431x6 STM32G431x8 STM32G431xB 102/198 DS12589 Rev 6 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. Figure 22. 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. Table 41. LSE oscillator characteristics (fLSE = 32.768 kHz)(1) 1. Guaranteed by design. Symbol Parameter Conditions(2) 2. Refer to the note and caution paragraphs below the table, and to the application note AN2867 “Oscillator design guide for ST microcontrollers”. Min Typ Max Unit IDD(LSE) LSE current consumption LSEDRV[1:0] = 00 Low drive capability -250 - nA LSEDRV[1:0] = 01 Medium low drive capability -315 - LSEDRV[1:0] = 10 Medium high drive capability -500 - LSEDRV[1:0] = 11 High drive capability -630 - Gmcritmax Maximum critical crystal gm LSEDRV[1:0] = 00 Low drive capability -- 0.5 µA/V LSEDRV[1:0] = 01 Medium low drive capability -- 0.75 LSEDRV[1:0] = 10 Medium high drive capability -- 1.7 LSEDRV[1:0] = 11 High drive capability -- 2.7 tSU(LSE)(3) 3. 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 measured for a standard crystal and it can vary significantly with the crystal manufacturer Startup time VDD is stabilized - 2 - s MS30253V2 OSC32_IN OSC32_OUT Drive programmable amplifier fLSE 32.768 kHz resonator Resonator with integrated capacitors CL1 CL2 |
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