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STM32H753II датащи(PDF) 147 Page - STMicroelectronics |
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STM32H753II датащи(HTML) 147 Page - STMicroelectronics |
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147 / 361 page ![]() DS12117 Rev 8 147/360 STM32H753xI Electrical characteristics (rev Y) 318 Figure 24. Asynchronous non-multiplexed SRAM/PSRAM/NOR write waveforms 1. Mode 2/B, C and D only. In Mode 1, FMC_NADV is not used. NBL Data FMC_NEx FMC_NBL[1:0] FMC_D[15:0] tv(BL_NE) th(Data_NWE) FMC_NOE Address FMC_A[25:0] tv(A_NE) tw(NWE) FMC_NWE tv(NWE_NE) t h(NE_NWE) th(A_NWE) th(BL_NWE) tv(Data_NE) tw(NE) MS32754V1 FMC_NADV (1) t v(NADV_NE) tw(NADV) FMC_NWAIT tsu(NWAIT_NE) th(NE_NWAIT) Table 67. Asynchronous non-multiplexed SRAM/PSRAM/NOR write timings(1) Symbol Parameter Min Max Unit tw(NE) FMC_NE low time 3Tfmc_ker_ck − 13Tfmc_ker_ck ns tv(NWE_NE) FMC_NEx low to FMC_NWE low Tfmc_ker_ck Tfmc_ker_ck + 1 tw(NWE) FMC_NWE low time Tfmc_ker_ck − 0.5 Tfmc_ker_ck + 0.5 th(NE_NWE) FMC_NWE high to FMC_NE high hold time Tfmc_ker_ck - tv(A_NE) FMC_NEx low to FMC_A valid - 2 th(A_NWE) Address hold time after FMC_NWE high Tfmc_ker_ck − 0.5 - tv(BL_NE) FMC_NEx low to FMC_BL valid - 0.5 th(BL_NWE) FMC_BL hold time after FMC_NWE high Tfmc_ker_ck − 0.5 - tv(Data_NE) Data to FMC_NEx low to Data valid - Tfmc_ker_ck + 2.5 th(Data_NWE) Data hold time after FMC_NWE high Tfmc_ker_ck+0.5 - tv(NADV_NE) FMC_NEx low to FMC_NADV low - 0 tw(NADV) FMC_NADV low time - Tfmc_ker_ck + 1 1. Guaranteed by characterization results. |
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