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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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STM32L011D4P7 Datenblatt(PDF) 79 Page - STMicroelectronics |
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STM32L011D4P7 Datenblatt(HTML) 79 Page - STMicroelectronics |
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79 / 119 page  DocID027973 Rev 5 79/119 STM32L011x3/4 Electrical characteristics 93 Figure 25. I/O AC characteristics definition 6.3.14 NRST pin characteristics The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up resistor, RPU , except when it is internally driven low (see Table 53). Unless otherwise specified, the parameters given in Table 53 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 18. Table 53. NRST pin characteristics Symbol Parameter Conditions Min Typ Max Unit VIL(NRST)(1) NRST input low level voltage - - - 0.3VDD V VIH(NRST)(1) NRST input high level voltage - 0.39VDD+ 0.59 -- VOL(NRST)(1) NRST output low level voltage IOL = 2 mA 2.7 V < VDD < 3.6 V -- 0.4 IOL = 1.5 mA 1.65 V < VDD < 2.7 V -- Vhys(NRST)(1) NRST Schmitt trigger voltage hysteresis -- 10%VDD(2) -mV RPU Weak pull-up equivalent resistor(3) VIN = VSS 25 45 65 k Ω VF(NRST)(1) NRST input filtered pulse - - - 50 ns VNF(NRST)(1) NRST input not filtered pulse - 350 - - ns 1. Guaranteed by design, not tested in production. 2. 200 mV minimum value 3. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series resistance is around 10%. |
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