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STM32F373C8 数据表(PDF) 78 Page - STMicroelectronics |
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STM32F373C8 数据表(HTML) 78 Page - STMicroelectronics |
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78 / 137 page  Electrical characteristics STM32F373xx 78/137 DocID022691 Rev 7 Figure 16. HSI oscillator accuracy characterization results Low-speed internal (LSI) RC oscillator 6.3.9 PLL characteristics The parameters given in Table 44 are derived from tests performed under ambient temperature and supply voltage conditions summarized in Table 22. Table 43. LSI oscillator characteristics(1) 1. VDDA = 3.3 V, TA = –40 to 105 °C unless otherwise specified. Symbol Parameter Min Typ Max Unit fLSI Frequency 30 40 60 kHz tsu(LSI)(2) 2. Guaranteed by design. LSI oscillator startup time - - 85 µs IDD(LSI)(2) LSI oscillator power consumption - 0.75 1.2 µA Table 44. PLL characteristics Symbol Parameter Value Unit Min Typ Max fPLL_IN PLL input clock(1) 1. Take care of using the appropriate multiplier factors so as to have PLL input clock values compatible with the range defined by fPLL_OUT. 1(2) -24(2) MHz PLL input clock duty cycle 40(2) -60(2) % fPLL_OUT PLL multiplier output clock 16(2) -72 MHz tLOCK PLL lock time - - 200(2) 2. Guaranteed by design. µs Jitter Cycle-to-cycle jitter - - 300(2) ps |
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