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RX95HF датащи(PDF) 30 Page - STMicroelectronics |
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RX95HF датащи(HTML) 30 Page - STMicroelectronics |
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30 / 44 page ![]() Electrical characteristics RX95HF 30/44 DocID023884 Rev 3 6.4 SPI characteristics The RX95HF supports (CPOL = 0, CPHA = 0) and (CPOL = 1, CPHA = 1) modes. Figure 10. SPI timing diagram (Slave mode and CPOL = 0, CPHA = 0) Table 34. SPI interface characteristics Symbol Parameter Condition Min. Max. Unit fSCK 1/ tc(SCK) SPI clock frequency 2.0 MHz VIL Input low voltage 0.3 x VPS V VIH Input high voltage 0.7 x VPS VOL Output low voltage 0.4 x VPS VOH Output high voltage 0.7 x VPS tSU(NSS)(1) 1. Values based on design simulation and/or characterization results, and not on tested in production. NSS setup time 70 ns th(NSS)(1) NSS hold time 0 tCH(SCKL)(1) Clock low time 200 ns tCH(SCKH)(1) Clock high time 200 tSU(SI)(1) Data slave Input setup time 20 ns th(SI)(1) Data slave Input hold time 80 tv(SO)(1) Data slave output valid time 80 ns th(SO)(1) Data slave output hold time After enable edge Cb_SPI_IN Capacitive load for input pins NSS, CLK, MOSI 3pF Cb_SPI_OUT Capacitive load for input pins MOSI 20 pF |
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