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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F479AI датащи(PDF) 152 Page - STMicroelectronics |
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STM32F479AI датащи(HTML) 152 Page - STMicroelectronics |
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152 / 217 page  Electrical characteristics STM32F479xx 152/217 DocID028010 Rev 3 Ethernet characteristics Unless otherwise specified, the parameters given in Table 73, Table 74 and Table 75 for SMI, RMII and MII are derived from tests performed under the ambient temperature, fHCLK frequency and VDD supply voltage conditions summarized in Table 17, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 10 • Capacitive load C = 30 pF • Measurement points are done at CMOS levels: 0.5 VDD. Refer to Section 5.3.20 for more details on the input/output characteristics. Table 73 gives the list of Ethernet MAC signals for the SMI (station management interface) and Figure 51 shows the corresponding timing diagram. Figure 51. Ethernet SMI timing diagram Table 72. Dynamic characteristics: USB ULPI(1) 1. Guaranteed based on test during characterization. Symbol Parameter Conditions Min. Typ. Max. Unit tSC Control in (ULPI_DIR, ULPI_NXT) setup time -2.0 - - ns tHC Control in (ULPI_DIR, ULPI_NXT) hold time -1.5 - - tSD Data in setup time - 1.0 - - tHD Data in hold time - 1.0 - - tDC/tDD Data/control output delay 2.7 V < VDD < 3.6 V, CL = 20 pF -7.5 9.0 2.7 V < VDD < 3.6 V, CL = 15 pF and -40 < T < 125°C - 7.5 12.0 1.7 V < VDD < 3.6 V, CL = 15 pF and -40 < T < 90°C -7.5 11.5 |
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