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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32H533CE датащи(PDF) 152 Page - STMicroelectronics |
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STM32H533CE датащи(HTML) 152 Page - STMicroelectronics |
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152 / 231 page  Electrical characteristics STM32H533xx 152/231 DS14539 Rev 1 Table 75. Asynchronous multiplexed PSRAM/NOR write timings(1) 1. Evaluated by characterization - Not tested in production. Symbol Parameter Min Max Unit tw(NE) FMC_NE low time 4 Tfmc_ker_ck -1 4 Tfmc_ker_ck +1 ns tv(NWE_NE) FMC_NEx low to FMC_NWE low Tfmc_ker_ck - 1 Tfmc_ker_ck +0.5 tw(NWE) FMC_NWE low time 2 Tfmc_ker_ck - 1 2 Tfmc_ker_ck + 1 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 - 3 tv(NADV_NE) FMC_NEx low to FMC_NADV low 0 1 tw(NADV) FMC_NADV low time Tfmc_ker_ck - 1 Tfmc_ker_ck + 1 th(AD_NADV) FMC_AD(adress) valid hold time after FMC_NADV high Tfmc_ker_ck - 1 - th(A_NWE) Address hold time after FMC_NWE high Tfmc_ker_ck - 1 - th(BL_NWE) FMC_BL hold time after FMC_NWE high Tfmc_ker_ck - 1 - tv(BL_NE) FMC_NEx low to FMC_BL valid - 0.5 tv(Data_NADV) Data hold time after FMC_NEx high - Tfmc_ker_ck + 0.5 th(Data_NWE) Data hold time after FMC_NWE high Tfmc_ker_ck - 0.5 - Table 76. Asynchronous multiplexed PSRAM/NOR write-NWAIT timings(1)(2) 1. Evaluated by characterization - Not tested in production. 2. NWAIT pulse width is equal to one fmc_ker_ck cycle. Symbol Parameter Min Max Unit tw(NE) FMC_NE low time 9 Tfmc_ker_ck - 1 9 Tfmc_ker_ck + 1 ns tw(NWE) FMC_NWE low time 7 Tfmc_ker_ck -1 7 Tfmc_ker_ck + 1 tsu(NWAIT_NE) FMC_NWAIT valid before FMC_NEx high 5 Tfmc_ker_ck + 10 - th(NE_NWAIT) FMC_NEx hold time after FMC_NWAIT invalid 4 Tfmc_ker_ck + 10 - |
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