Transcend Information manual 128MB~2GB SD80 Cards Bus Timing Default

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SD80 series

128MB~2GB SD80 Cards

•Bus Timing (Default)

Parameter

Symbol

Min

Max.

Unit

Remark

Clock CLK (All values are referred to min (VIH) and max (VIL)

	Clock frequency Data Transfer Mode	fPP	0	25	MHz	CL ≤ 100 pF, (7 cards)
	Clock frequency Identification Mode	fOD	0	400	KHz	CL ≤ 250 pF, (21 cards)
	(The low freq. is required for MultiMediaCard
	compatibility.)
	Clock low time	tWL	10		ns	CL ≤ 100 pF, (7 cards)
			50		ns	CL ≤ 250 pF, (21 cards)
	Clock high time	tWH	10		ns	CL ≤ 100 pF, (7 cards)
			50		ns	CL ≤ 250 pF, (21 cards)
	Clock rise time	tTLH		10	ns	CL ≤ 100 pF, (7 cards)

Transcend Information Inc.			5

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Contents

Pin Definition 128MB~2GB SD80 Cards Description FeaturesPlacement 128MB~2GB SD80 Cards Architecture Bus Signal Line Load Power Supply VoltageParameter Symbol Min Max Unit 128MB~2GB SD80 Cards Bus Operating Conditions GeneralParameter Symbol Min Max Unit Remark 128MB~2GB SD80 Cards Bus Signal Levels128MB~2GB SD80 Cards Bus Timing Default 128MB~2GB SD80 Cards 128MB~2GB SD80 Cards Bus Timing High Speed Mode Reliability and Durability