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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32WL33CB датащи(PDF) 67 Page - STMicroelectronics |
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STM32WL33CB датащи(HTML) 67 Page - STMicroelectronics |
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67 / 91 page  6.3.16 RSTN pin characteristics The RSTN pin input driver uses the CMOS technology. It is connected to a permanent pull-up resistor, RPU. Unless otherwise specified, the parameters given in the table below are derived from tests performed under the ambient temperature and supply voltage conditions summarized in Section 6.3.1: Operating range. Table 58. RSTN pin characteristics (specified by design - not tested in production) Symbol Parameter Conditions Min. Typ. Max. Unit VIL(RSTN) RSTN input low level voltage - - - 0.3 x VDD V VIH(RSTN) RSTN input high level voltage - 0.7 x VDD - - Vhys(RSTN) RSTN Schmitt trigger voltage hysteresis - - 200 - mV RPU Weak pull up equivalent resistor VIN=GND 25 40 55 kΩ Figure 15. Recommended RSTN pin protection Note: • The reset network protects the device against parasitic resets. • The user must ensure that the level on the RSTN pin can go below the VIL(RSTN) maximum level specified in Table 58, otherwise the reset is not taken into account by the device. • The external capacitor on RSTN must be placed as close as possible to the device. STM32WL33xx Electrical characteristics DS14221 - Rev 5 page 67/91 |
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