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STM32F769AI 数据表(PDF) 223 Page - STMicroelectronics |
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STM32F769AI 数据表(HTML) 223 Page - STMicroelectronics |
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223 / 255 page  DocID029041 Rev 4 223/255 STM32F765xx STM32F767xx STM32F768Ax STM32F769xx Electrical characteristics 224 5.3.36 SD/SDIO MMC card host interface (SDMMC) characteristics Unless otherwise specified, the parameters given in Table 123 for the SDIO/MMC interface are derived from tests performed under the ambient temperature, fPCLK2 frequency and VDD supply voltage conditions summarized in Table 17, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 11 • Capacitive load C = 30 pF • Measurement points are done at CMOS levels: 0.5VDD Refer to Section 5.3.20: I/O port characteristics for more details on the input/output characteristics. Figure 81. SDIO high-speed mode Figure 82. SD default mode |
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