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本帖最后由 超級狗 于 2016-12-13 09:09 编辑
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. O, [( j( _: f- }. x5 VMicroChip Design Guidelines for USB225x/USB224x/USB264x/USB266X High-Speed SD
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0 q( n4 X& F) v- g5 C UAmong SD_DAT[0:3] +/-750 mil Maximum
8 l/ _ q; U* h% L: PSD_DAT[0:3] to SD_CLK -250 mil to +1500 mil8 J, A2 V5 x! h6 u3 W
SD_CMD to SD_CLK -250 mil to +1500 mil: o* B+ p2 O7 e9 o" m& ~
) _# f. V" A& @) E 這是 MicroChip SD 2.0 / MMC 4.2 USB 讀卡機芯片的建議!' `7 l) o/ g& [; e
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