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STM32F103ZCT7XXX 数据表(PDF) 103 Page - STMicroelectronics |
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STM32F103ZCT7XXX 数据表(HTML) 103 Page - STMicroelectronics |
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103 / 143 page  DS5792 Rev 13 103/143 STM32F103xC, STM32F103xD, STM32F103xE Electrical characteristics 135 SD/SDIO MMC card host interface (SDIO) characteristics Unless otherwise specified, the parameters given in Table 55 are derived from tests performed under ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in Table 10. Refer to Section 5.3.14: I/O port characteristics for more details on the input/output alternate function characteristics (D[7:0], CMD, CK). Figure 54. SDIO high-speed mode Figure 55. SD default mode Table 55. SD / MMC characteristics Symbol Parameter Conditions Min Max Unit fPP Clock frequency in data transfer mode CL ≤ 30 pF 0 48 MHz tW(CKL) Clock low time, fPP = 16 MHz CL ≤ 30 pF 32 - ns tW(CKH) Clock high time, fPP = 16 MHz CL ≤ 30 pF 30 - tr Clock rise time CL ≤ 30 pF - 4 tf Clock fall time CL ≤ 30 pF - 5 |
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