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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IMX7DCEC датащи(PDF) 86 Page - NXP Semiconductors |
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IMX7DCEC датащи(HTML) 86 Page - NXP Semiconductors |
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86 / 161 page  Electrical characteristics i.MX 7Dual Family of Applications Processors Datasheet, Rev. 7, 09/2023 NXP Semiconductors 86 4.10.2.3 HS400 AC timing—eMMC5.0 only Figure 48 depicts the timing of HS400. Table 63 lists the HS400 timing characteristics. Be aware that only data is sampled on both edges of the clock (not applicable to CMD). The CMD input/output timing for HS400 mode is the same as CMD input/output timing for SDR104 mode. Check SD5, SD6 and SD7 parameters in Table 65 SDR50/SDR104 Interface Timing Specification for CMD input/output timing for HS400 mode. Figure 48. HS400 timing SD3 uSDHC Input Setup Time tISU 2.4 — ns SD4 uSDHC Input Hold Time tIH 1.3 — ns Table 63. HS400 interface timing specifications ID Parameter Symbols Min Max Unit Card Input clock SD1 Clock Frequency fPP 0 200 Mhz SD2 Clock Low Time tCL 0.46 tCLK 0.54 tCLK ns SD3 Clock High Time tCH 0.46 tCLK 0.54 tCLK ns uSDHC Output/Card inputs DAT (Reference to SCK) SD4 Output Skew from Data of Edge of SCK tOSkew1 0.45 — ns SD5 Output Skew from Edge of SCK to Data tOSkew2 0.45 — ns Table 62. eMMC4.4/4.41 interface timing specification(continued) ID Parameter Symbols Min Max Unit |
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