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STM32U545NET3QTR Datasheet(PDF) 200 Page - STMicroelectronics |
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STM32U545NET3QTR Datasheet(HTML) 200 Page - STMicroelectronics |
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200 / 283 page  Electrical characteristics STM32U545xx 200/283 DS14216 Rev 1 Secure high-speed internal (SHSI) RC oscillator Low-speed internal (LSI) RC oscillator 5.3.9 PLL characteristics The parameters given in the table below are derived from tests performed under temperature and VDD supply voltage conditions summarized in Table 33. Table 84. SHSI oscillator characteristics(1) Symbol Parameter Conditions Min Typ Max Unit fSHSI SHSI frequency - - 48 - MHz tSU(SHSI) SHSI oscillator startup time - - 2.5 6 μs IDD(SHSI) SHSI oscillator power consumption - - 350 400 μA 1. Specified by design. Not tested in production. Table 85. LSI oscillator characteristics Symbol Parameter Conditions Min Typ Max Unit fLSI LSI frequency VDD = 3.0 V, TJ = 30 °C, LSIPREDIV = 0 31.4 - 32.6 kHz VDD = 3.0 V, TJ = 30 °C, LSIPREDIV = 1 0.245 - 0.255 1.58 V≤ VDD ≤ 3.6 V, TJ = –40 to 125 °C 30.4(1) -33.6(1) DuCy(LSI) LSI duty cycle LSIPREDIV = 1 - 50 - % tSU(LSI)(2) LSI oscillator startup time - - 230 260 μs tSTAB(LSI)(2) LSI oscillator stabilization time 5% of final frequency - 230 260 IDD(LSI)(2) LSI oscillator power consumption LSIPREDIV = 0 - 140 255 nA LSIPREDIV = 1 - 130 240 1. Evaluated by characterization. Not tested in production. 2. Specified by design. Not tested in production. Table 86. PLL characteristics(1) Symbol Parameter Conditions Min Typ Max Unit fPLL_IN PLL input clock - 4 - 16 MHz PLL input clock duty cycle -10 - 90 % fPLL_OUT PLL P, Q, R output clock Voltage scaling range 1 1 - 160(2) MHz Voltage scaling range 2 1 - 110 Voltage scaling range 3 1 - 55 fVCO_OUT PLL VCO output Voltage scaling range 1, 2 128 - 544 Voltage scaling range 3 128 - 330 Duty cycle with division 1 40 - 60 % |
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