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STM32F207VC 数据表(PDF) 135 Page - STMicroelectronics |
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STM32F207VC 数据表(HTML) 135 Page - STMicroelectronics |
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135 / 163 page  STM32F205xx, STM32F207xx Electrical characteristics Doc ID 15818 Rev 7 135/163 Figure 70. NAND controller waveforms for common memory read access Figure 71. NAND controller waveforms for common memory write access Table 76. Switching characteristics for NAND Flash read and write cycles(1) Symbol Parameter Min Max Unit td(D-NWE) (2) FSMC_D[15:0] valid before FSMC_NWE high 6THCLK + 12 ns tw(NOE) (2) FSMC_NOE low width 4THCLK – 1.5 4THCLK + 1.5 ns tsu(D-NOE) (2) FSMC_D[15:0] valid data before FSMC_NOE high 25 ns th(NOE-D) (2) FSMC_D[15:0] valid data after FSMC_NOE high 7 ns tw(NWE) (2) FSMC_NWE low width 4THCLK – 1 4THCLK + 2.5 ns tv(NWE-D) (2) FSMC_NWE low to FSMC_D[15:0] valid 0 ns th(NWE-D) (2) FSMC_NWE high to FSMC_D[15:0] invalid 10THCLK + 4 ns |
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