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STM32H7B3II Datasheet(PDF) 128 Page - STMicroelectronics |
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STM32H7B3II Datasheet(HTML) 128 Page - STMicroelectronics |
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128 / 238 page  Symbol Parameter Min(1) Max(1) Unit tv(NOE_NE) ns FMC_NEx low to FMC_NOE low 2Tfmc_ker_ck 2Tfmc_ker_ck + 0.5 tw(NOE) FMC_NOE low time Tfmc_ker_ck − 1 Tfmc_ker_ck + 1 th(NE_NOE) FMC_NOE high to FMC_NE high hold time 0 - tv(A_NE) FMC_NEx low to FMC_A valid - 0.5 tv(NADV_NE) FMC_NEx low to FMC_NADV low 0 0.5 tw(NADV) FMC_NADV low time Tfmc_ker_ck − 0.5 Tfmc_ker_ck+1 th(AD_NADV) FMC_AD(address) valid hold time after FMC_NADV high Tfmc_ker_ck + 0.5 - th(A_NOE) Address hold time after FMC_NOE high Tfmc_ker_ck − 0.5 - tsu(Data_NE) Data to FMC_NEx high setup time 13 - tsu(Data_NOE) Data to FMC_NOE high setup time 11 - th(Data_NE) Data hold time after FMC_NEx high 0 - th(Data_NOE) Data hold time after FMC_NOE high 0 - 1. Guaranteed by characterization results. Table 77. Asynchronous multiplexed PSRAM/NOR read - NWAIT timings Symbol Parameter Min(1) Max(1) Unit tw(NE) FMC_NE low time 8Tfmc_ker_ck − 1 8Tfmc_ker_ck + 1 ns tw(NOE) FMC_NWE low time 5Tfmc_ker_ck − 1 5Tfmc_ker_ck + 1 tsu(NWAIT_NE) FMC_NWAIT valid before FMC_NEx high 4Tfmc_ker_ck + 9 - th(NE_NWAIT) FMC_NEx hold time after FMC_NWAIT invalid 4Tfmc_ker_ck + 12 - 1. Guaranteed by characterization results. Table 78. Asynchronous multiplexed PSRAM/NOR write timings Symbol Parameter Min(1) Max(1) Unit tw(NE) FMC_NE low time 4Tfmc_ker_ck − 1 4Tfmc_ker_ck ns tv(NWE_NE) FMC_NEx low to FMC_NWE low Tfmc_ker_c − 1 Tfmc_ker_ck + 0.5 tw(NWE) FMC_NWE low time 2Tfmc_ker_ck− 0.5 2Tfmc_ker_ck + 0.5 th(NE_NWE) FMC_NWE high to FMC_NE high hold time Tfmc_ker_ck − 0.5 - tv(A_NE) FMC_NEx low to FMC_A valid - 0 tv(NADV_NE) FMC_NEx low to FMC_NADV low 0 0.5 tw(NADV) FMC_NADV low time Tfmc_ker_ck Tfmc_ker_ck+ 1 th(AD_NADV) FMC_AD(address) valid hold time after FMC_NADV high Tfmc_ker_ck + 0.5 - th(A_NWE) Address hold time after FMC_NWE high Tfmc_ker_ck + 0.5 - th(BL_NWE) FMC_BL hold time after FMC_NWE high Tfmc_ker_ck − 0.5 - tv(BL_NE) FMC_NEx low to FMC_BL valid - 0.5 tv(Data_NADV) FMC_NADV high to Data valid - Tfmc_ker_ck + 2 th(Data_NWE) Data hold time after FMC_NWE high Tfmc_ker_ck+0.5 - 1. Guaranteed by characterization results. STM32H7B3xI Operating conditions DS13139 - Rev 8 page 128/238 |
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