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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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STM32F215RG Datenblatt(PDF) 71 Page - STMicroelectronics |
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STM32F215RG Datenblatt(HTML) 71 Page - STMicroelectronics |
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71 / 175 page  DocID17050 Rev 9 71/175 STM32F21xxx Electrical characteristics 174 Figure 19. Number of wait states versus fCPU and VDD range 6.3.2 VCAP1/VCAP2 external capacitor Stabilization for the main regulator is achieved by connecting an external capacitor to the VCAP1/VCAP2 pins. CEXT is specified in Table 15. Figure 20. External capacitor CEXT 1. Legend: ESR is the equivalent series resistance. ai18748b 0 1 2 3 4 5 6 7 8 Fcpu (MHz) Wait states vs Fcpu and VDD range 1.8 to 2.1V 2.1 to 2.4V 2.4 to 2.7V 2.7 to 3.6V Table 15. VCAP1/VCAP2 operating conditions(1) 1. When bypassing the voltage regulator, the two 2.2 µF VCAP capacitors are not required and should be replaced by two 100 nF decoupling capacitors. Symbol Parameter Conditions CEXT Capacitance of external capacitor 2.2 µF ESR ESR of external capacitor < 2 Ω MS19044V2 ESR R Leak C |
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