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STM32F427AI Datasheet(PDF) 187 Page - STMicroelectronics |
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STM32F427AI Datasheet(HTML) 187 Page - STMicroelectronics |
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187 / 240 page  DS9405 Rev 12 187/240 STM32F427xx STM32F429xx Electrical characteristics 197 NAND controller waveforms and timings Figure 69 and Figure 70 represent synchronous waveforms, and Table 101 and Table 102 provide the corresponding timings. The results shown in this table are obtained with the following FMC configuration: • COM.FMC_SetupTime = 0x01; • COM.FMC_WaitSetupTime = 0x03; • COM.FMC_HoldSetupTime = 0x02; • COM.FMC_HiZSetupTime = 0x01; • ATT.FMC_SetupTime = 0x01; • ATT.FMC_WaitSetupTime = 0x03; • ATT.FMC_HoldSetupTime = 0x02; • ATT.FMC_HiZSetupTime = 0x01; • Bank = FMC_Bank_NAND; • MemoryDataWidth = FMC_MemoryDataWidth_16b; • ECC = FMC_ECC_Enable; • ECCPageSize = FMC_ECCPageSize_512Bytes; • TCLRSetupTime = 0; • TARSetupTime = 0. In all timing tables, the THCLK is the HCLK clock period. Table 100. Switching characteristics for PC Card/CF read and write cycles in I/O space(1)(2) Symbol Parameter Min Max Unit tw(NIOWR) FMC_NIOWR low width 8THCLK − 0.5 - ns tv(NIOWR-D) FMC_NIOWR low to FMC_D[15:0] valid - 0 ns th(NIOWR-D) FMC_NIOWR high to FMC_D[15:0] invalid 9THCLK − 2- ns td(NCE4_1-NIOWR) FMC_NCE4_1 low to FMC_NIOWR valid - 5THCLK ns th(NCEx-NIOWR) FMC_NCEx high to FMC_NIOWR invalid 5THCLK -ns td(NIORD-NCEx) FMC_NCEx low to FMC_NIORD valid - 5THCLK ns th(NCEx-NIORD) FMC_NCEx high to FMC_NIORD) valid 6THCLK+2 - ns tw(NIORD) FMC_NIORD low width 8THCLK − 0.5 8THCLK+0.5 ns tsu(D-NIORD) FMC_D[15:0] valid before FMC_NIORD high THCLK -ns td(NIORD-D) FMC_D[15:0] valid after FMC_NIORD high 0 - ns 1. CL = 30 pF. 2. Evaluated by characterization. |
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