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STM32F401CD датащи(PDF) 101 Page - STMicroelectronics |
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STM32F401CD датащи(HTML) 101 Page - STMicroelectronics |
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101 / 135 page ![]() DocID025644 Rev 3 101/135 STM32F401xD STM32F401xE Electrical characteristics 114 Figure 34. SPI timing diagram - slave mode and CPHA = 0 Figure 35. SPI timing diagram - slave mode and CPHA = 1(1) tv(MO) Data output valid time Master mode (after enable edge) - 3 5 ns th(MO) Data output hold time Master mode (after enable edge) 2 - - ns 1. Guaranteed by characterization, not tested in production. 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 61. SPI dynamic characteristics(1) (continued) Symbol Parameter Conditions Min Typ Max Unit ai14134c CPHA= 0 MOSI INPUT MISO OUT P UT CPHA= 0 MS B O UT MSB IN BI T6 OUT LSB IN LSB OUT CPOL=0 CPOL=1 BI T1 IN NSS input tSU(NSS) tc(SCK) th(NSS) ta(SO) tw(SCKH) tw(SCKL) tv(SO) th(SO) tr(SCK) tf(SCK) tdis(SO) tsu(SI) th(SI) ai14135 CPHA=1 MOSI INPUT MISO OUT P UT CPHA=1 MS B O UT MSB IN BI T6 OUT LSB IN LSB OUT CPOL=0 CPOL=1 BI T1 IN tSU(NSS) tc(SCK) th(NSS) ta(SO) tw(SCKH) tw(SCKL) tv(SO) th(SO) tr(SCK) tf(SCK) tdis(SO) tsu(SI) th(SI) NSS input |
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