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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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STM32F100RC 데이터시트(PDF) 76 Page - STMicroelectronics |
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STM32F100RC 데이터시트(HTML) 76 Page - STMicroelectronics |
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76 / 106 page  Electrical characteristics STM32F100xC, STM32F100xD, STM32F100xE 76/106 DocID15081 Rev 10 Figure 27. I/O AC characteristics definition 5.3.15 NRST pin characteristics The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up resistor, RPU (see Table 43). Unless otherwise specified, the parameters given in Table 46 are derived from tests performed under the ambient temperature and VDD supply voltage conditions summarized in Table 9. Table 46. NRST pin characteristics Symbol Parameter Conditions Min Typ Max Unit VIL(NRST)(1) 1. Guaranteed by design, not tested in production. NRST Input low level voltage - –0.5 - 0.8 V VIH(NRST)(1) NRST Input high level voltage - 2 - VDD+0.5 Vhys(NRST) NRST Schmitt trigger voltage hysteresis - - 200 - mV RPU Weak pull-up equivalent resistor(2) 2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series resistance must be minimum (~10% order) . VIN = VSS 30 40 50 k Ω VF(NRST)(1) NRST Input filtered pulse - - - 100 ns VNF(NRST)(1) NRST Input not filtered pulse - 300 - - ns |
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