SanDisk SD Card

Revision 2.2Chapter 3 – SD Card Interface DescriptionSD Card Product ManualParameter Symbol Min Max Unit RemarkClock (CLK) – all values referred to min. V IH and max. V ILOutput delay time during DataTransfer modeOutput delay time duringIdentification modet OSU 0 14 ns C L < 25 pF (1 card)t ODLY 0 50 ns C L < 25 pF (1 card)3.4.7 Bus Timing (high-speed mode)High-speed mode dataIn/dataOut timing is illustrated in Figure 3-8; bus timing parametervalues are shown in Table 3-8.Figure 3-8Data In/Out Referenced to Clock Timing (high-speed)Table 3-8Bus Timing Parameter Values (high-speed)Parameter Symbol Min Max Unit RemarkClock (CLK) – all values referred to min. V IH and max. V ILClock Freq. Data Transfer Mode f PP 0 50 MHzClock Low Time t WL 7 --- nsClock High Time t WH 7 --- nsClock Rise Time t TLH --- 3 nsClock Fall Time t THL --- 3 nsInputs CMD, DAT – referenced to CLKInput setup time t ISU 6 --- nsInput hold time t IH 2 --- nsOutputs CMD, DAT – referenced to CLKOutput delay time during DataTransfer modet ODLY --- 14 ns© 2004 SanDisk Corporation 3-10 12/08/04