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STM32F446MC датащи(PDF) 130 Page - STMicroelectronics |
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STM32F446MC датащи(HTML) 130 Page - STMicroelectronics |
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130 / 201 page ![]() Electrical characteristics STM32F446xC/E 130/201 DocID027107 Rev 5 Figure 36. SPI timing diagram - slave mode and CPHA = 0 tw(SCKH) SCK high and low time Master mode, SPI presc = 2 TPCLK - 1.5 TPCLK TPCLK + 1.5 ns tw(SCKL) tsu(NSS) NSS setup time Slave mode, SPI presc = 2 4TPCLK -- th(NSS) NSS hold time Slave mode, SPI presc = 2 2TPCLK tsu(MI) Data input setup time Master mode 4 - - tsu(SI) Slave mode 3 - - th(MI) Data input hold time Master mode 4 - - th(SI) Slave mode 2 - - ta(SO) Data output access time Slave mode 7 - 21 tdis(SO) Data output disable time Slave mode 5 - 12 tv(SO) Data output valid/hold time Slave mode (after enable edge), 2.7V ≤ VDD ≤ 3.6V -7.5 22 Slave mode (after enable edge), 1.7 V ≤ VDD ≤ 3.6 V - 7.5 10.5 th(SO) Data output valid/hold time Slave mode (after enable edge) 5 - - tv(MO) Data output valid time Master mode (after enable edge) - 1.5 5 th(MO) Data output hold time Master mode (after enable edge) 0 - - 1. Guaranteed based on test during characterization. 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 63. SPI dynamic characteristics(1) (continued) Symbol Parameter Conditions Min Typ Max Unit |
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