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STM32F411CC 数据表(PDF) 122 Page - STMicroelectronics |
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STM32F411CC 数据表(HTML) 122 Page - STMicroelectronics |
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122 / 149 page  Electrical characteristics STM32F411xC STM32F411xE 122/149 DocID026289 Rev 6 Table 76. Dynamic characteristics: SD / MMC characteristics(1)(2) Symbol Parameter Conditions Min Typ Max Unit fPP Clock frequency in data transfer mode -0 - 50 MHz - SDIO_CK/fPCLK2 frequency ratio - - - 8/3 - tW(CKL) Clock low time fpp = 50 MHz 10.5 11 - ns tW(CKH) Clock high time fpp = 50 MHz 8.5 9 - CMD, D inputs (referenced to CK) in MMC and SD HS mode tISU Input setup time HS fpp = 50 MHz 2.5 - - ns tIH Input hold time HS fpp = 50 MHz -40°C<TA< 125°C 5- - fpp = 50 MHz -40°C<TA<+85°C 2.5 - - CMD, D outputs (referenced to CK) in MMC and SD HS mode tOV Output valid time HS fpp = 50 MHz - 3.5 4 ns tOH Output hold time HS fpp = 50 MHz 2 - - CMD, D inputs (referenced to CK) in SD default mode tISUD Input setup time SD fpp = 25 MHz 3 - - ns tIHD Input hold time SD fpp = 25 MHz 4 - - CMD, D outputs (referenced to CK) in SD default mode tOVD Output valid default time SD fpp =25 MHz - 5 5.5 ns tOHD Output hold default time SD fpp =25 MHz 4.5 - - 1. Guaranteed by characterization results. 2. VDD = 2.7 to 3.6 V. |
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