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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32H757AI датащи(PDF) 224 Page - STMicroelectronics |
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STM32H757AI датащи(HTML) 224 Page - STMicroelectronics |
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224 / 251 page  Electrical characteristics STM32H757xI 224/251 DS12931 Rev 1 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 124. Dynamics characteristics: SD / MMC characteristics, VDD=2.7 to 3.6 V(1)(2) (continued) Symbol Parameter Conditions Min Typ Max Unit Table 125. 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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