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STM32F217VG 数据表(PDF) 123 Page - STMicroelectronics |
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STM32F217VG 数据表(HTML) 123 Page - STMicroelectronics |
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123 / 173 page  STM32F21xxx Electrical characteristics Doc ID 17050 Rev 8 123/173 Figure 53. Asynchronous non-multiplexed SRAM/PSRAM/NOR read waveforms 1. Mode 2/B, C and D only. In Mode 1, FSMC_NADV is not used. Table 69. Asynchronous non-multiplexed SRAM/PSRAM/NOR read timings(1)(2) 1. CL = 30 pF. 2. Based on characterization, not tested in production. Symbol Parameter Min Max Unit tw(NE) FSMC_NE low time 2THCLK– 0.5 2THCLK+0.5 ns tv(NOE_NE) FSMC_NEx low to FSMC_NOE low 0.5 2.5 ns tw(NOE) FSMC_NOE low time 2THCLK- 1 2THCLK+ 0.5 ns th(NE_NOE) FSMC_NOE high to FSMC_NE high hold time 0 - ns tv(A_NE) FSMC_NEx low to FSMC_A valid - 4 ns th(A_NOE) Address hold time after FSMC_NOE high 0 - ns tv(BL_NE) FSMC_NEx low to FSMC_BL valid - 0.5 ns th(BL_NOE) FSMC_BL hold time after FSMC_NOE high 0 - ns tsu(Data_NE) Data to FSMC_NEx high setup time THCLK+ 0.5 - ns tsu(Data_NOE) Data to FSMC_NOEx high setup time THCLK+ 2.5 - ns th(Data_NOE) Data hold time after FSMC_NOE high 0 - ns th(Data_NE) Data hold time after FSMC_NEx high 0 - ns tv(NADV_NE) FSMC_NEx low to FSMC_NADV low - 2.5 ns tw(NADV) FSMC_NADV low time - THCLK– 0.5 ns Data FSMC_NE FSMC_NBL[1:0] FSMC_D[15:0] tv(BL_NE) t h(Data_NE) FSMC_NOE Address FSMC_A[25:0] tv(A_NE) FSMC_NWE tsu(Data_NE) tw(NE) ai14991c w(NOE) t tv(NOE_NE) t h(NE_NOE) th(Data_NOE) t h(A_NOE) t h(BL_NOE) tsu(Data_NOE) FSMC_NADV(1) t v(NADV_NE) tw(NADV) |
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