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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32H747AI датащи(PDF) 225 Page - STMicroelectronics |
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STM32H747AI датащи(HTML) 225 Page - STMicroelectronics |
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225 / 252 page  DS12930 Rev 1 215/242 STM32H747xI/G Electrical characteristics 221 CMD, D inputs (referenced to CK) in SD default mode tISUD Input setup time SD - 1.5 - ns tIHD Input hold time SD - 1.5 - CMD, D outputs (referenced to CK) in SD default mode tOVD Output valid default time SD - - 0.5 2 ns tOHD Output hold default time SD - 0 - - 1. Guaranteed by characterization results. 2. Above 100 MHz, CL = 20 pF. 3. An external voltage converter is required to support SD 1.8 V. 4. The minimum window of time where the data needs to be stable for proper sampling in tuning mode. Table 123. Dynamics characteristics: SD / MMC characteristics, VDD=2.7 to 3.6 V(1)(2) (continued) Symbol Parameter Conditions Min Typ Max Unit Table 124. Dynamics characteristics: eMMC characteristics VDD=1.71V to 1.9V(1)(2) 1. Guaranteed by characterization results. 2. CL = 20 pF. Symbol Parameter Conditions Min Typ Max Unit fPP Clock frequency in data transfer mode -0 - 120 MHz - SDIO_CK/fPCLK2 frequency ratio - - - 8/3 - tW(CKL) Clock low time fPP =52 MHz 8.5 9.5 - ns tW(CKH) Clock high time fPP =52 MHz 8.5 9.5 - CMD, D inputs (referenced to CK) in eMMC mode tISU Input setup time HS - 1 - - ns tIH Input hold time HS - 2.5 - - tIDW(3) 3. The minimum window of time where the data needs to be stable for proper sampling in tuning mode. Input valid window (variable window) -3.5 - - CMD, D outputs (referenced to CK) in eMMC mode tOVD Output valid time HS - - 5 7 ns tOHD Output hold time HS - 3 - - |
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