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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32H533CE датащи(PDF) 120 Page - STMicroelectronics |
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STM32H533CE датащи(HTML) 120 Page - STMicroelectronics |
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120 / 231 page  Electrical characteristics STM32H533xx 120/231 DS14539 Rev 1 Note: For information on selecting the crystal, refer to AN2867 “Oscillator design guide for ST microcontrollers” available from www.st.com. Figure 17. Low-speed external clock source AC timing diagram High-speed external clock generated from a crystal/ceramic resonator The high-speed external (HSE) clock can be supplied with a 4 to 50 MHz crystal/ceramic resonator oscillator. All the information given in this paragraph are based on characterization results obtained with typical external components specified in Table 41. In the application, the resonator and the load capacitors must be placed as close as possible to the oscillator pins to minimize output distortion and startup stabilization time. Refer to the crystal resonator manufacturer for more details on the resonator characteristics (frequency, package, accuracy). Table 41. 4-50 MHz HSE oscillator characteristics(1) Symbol Parameter Operating conditions(2) Min Typ Max Unit F Oscillator frequency - 4 - 50 MHz RF Feedback resistor - - 200 - kΩ IDD(HSE) HSE current consumption During startup(3) -- 10 mA VDD = 3 V, Rm = 20 Ω, CL = 10 pF at 4 MHz -0.44 - VDD = 3 V, Rm = 20 Ω, CL = 10 pF at 8 MHz -0.44 - VDD = 3 V, Rm = 20 Ω, CL = 10 pF at 16 MHz -0.55 - VDD = 3 V, Rm = 20 Ω, CL = 10 pF at 32 MHz -0.67 - VDD = 3 V, Rm = 20 Ω, CL = 10 pF at 48 MHz -1.17 - Gmcritmax Maximum critical crystal gm Startup - - 1.5 mA/V tSU(HSE)(4) Startup time VDD is stabilized - 2 - ms ai17529b OSC32_IN External STM32 clock source VLSEH tf(LSE) tW(LSE) IL 90% 10 % TLSE t tr(LSE) tW(LSE) fLSE_ext VLSEL |
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