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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32L475VG датащи(PDF) 163 Page - STMicroelectronics |
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STM32L475VG датащи(HTML) 163 Page - STMicroelectronics |
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163 / 193 page  DocID027692 Rev 2 163/193 STM32L475xx Electrical characteristics 181 Figure 25. SPI timing diagram - slave mode and CPHA = 0 tv(SO) Data output valid time Slave mode 2.7 < VDD < 3.6 V Voltage Range 1 -12.5 19 ns Slave mode 1.71 < VDD < 3.6 V Voltage Range 1 -12.5 30 Slave mode 1.71 < VDD < 3.6 V Voltage Range 2 -12.5 33 tv(MO) Master mode - 2.5 12.5 th(SO) Data output hold time Slave mode 9 - - ns th(MO) Master mode 0 - - 1. Guaranteed by characterization results. 2. Maximum frequency in Slave transmitter mode is determined by the sum of tv(SO) and tsu(MI) which has to fit into SCK low or high phase preceding the SCK sampling edge. This value can be achieved when the SPI communicates with a master having tsu(MI) = 0 while Duty(SCK) = 50 %. Table 83. SPI characteristics(1) (continued) Symbol Parameter Conditions Min Typ Max Unit |
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