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STM32MP157C 数据表(PDF) 193 Page - STMicroelectronics |
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STM32MP157C 数据表(HTML) 193 Page - STMicroelectronics |
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193 / 258 page ![]() DS12505 Rev 2 193/258 STM32MP157C Electrical characteristics 238 Figure 37. QUADSPI timing diagram - SDR mode Figure 38. QUADSPI timing diagram - DDR mode Table 74. QUADSPI characteristics in DDR mode Symbol Parameter Conditions Min Typ Max Unit Fck1/t(CLK) QUADSPI clock frequency 2.7 V < VDD < 3.6 V CL=20 pF -- 90 MHz 1.71 V < VDD < 3.6 V CL=15 pF -- 90 tw(CLKH) QUADSPI clock high and low time -t(CLK)/2 - 0.5 - t(CLK)/2 + 0.5 ns tw(CLKL) -t(CLK)/2 - 0.5 - t(CLK)/2 + 0.5 tsr(IN), tsf(IN) Data input setup time - 0.5 - - thr(IN), thf(IN) Data input hold time - 2.75 - - tvr(OUT), tvf(OUT) Data output valid time DHHC = 0 - 1 1.5 DHHC = 1 Pres = 1, 2... -t(CLK)/4+1 t(CLK)/4+1.5 thr(OUT), thf(OUT) Data output hold time DHHC = 0 0 - - DHHC = 1 Pres = 1, 2... t(CLK)/4 - - MSv36878V2 Data output IO0 IO1 IO2 Clock Data input IO0 IO1 IO2 t(CLK) tw(CLKH) tw(CLKL) tr(CLK) tf(CLK) ts(IN) th(IN) tv(OUT) th(OUT) MSv36879V3 Data output IO0 IO2 IO4 Clock Data input IO0 IO2 IO4 t(CLK) tw(CLKH) tw(CLKL) tr(CLK) tf(CLK) tsf(IN) thf(IN) tvf(OUT) thr(OUT) IO1 IO3 IO5 IO1 IO3 IO5 tvr(OUT) thf(OUT) tsr(IN) thr(IN) |
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