Transcend Information TS2GUSD-P3 - Manual (Page 5)

T T T S S S 2 2 2 G G G U U U S S S D D D - - - P P P 3 3 3
2GB microSD Card + Reader P3
Transcend Information Inc. 5
• Bus Timing
Parameter Symbol Min Max. Unit Remark
Clock CLK (All values are referred to min (V
IH
) and max (V
IL
)
Clock frequency Data Transfer Mode f
PP
0 25 MHz C
L
≤ 100 pF, (7 cards)
Clock frequency Identification Mode
(The low freq. is required for MultiMediaCard
compatibility.)
f
OD
0 400 KHz C
L
≤ 250 pF, (21 cards)
t
WL
10 ns C
L
≤ 100 pF, (7 cards) Clock low time
50 ns C
L
≤ 250 pF, (21 cards)
t
WH
10 ns C
L
≤ 100 pF, (7 cards) Clock high time
50 ns C
L
≤ 250 pF, (21 cards)
t
TLH
10 ns C
L
≤ 100 pF, (7 cards) Clock rise time
50 ns C
L
≤ 250 pF, (21 cards)
t
THL
10 ns C
L
≤ 100 pF, (7 cards) Clock fall time
50 ns C
L
≤ 250 pF, (21 cards)
Inputs CMD, DAT (referenced to CLK)
Input set-up time t
ISU
5 ns C
L
≤ 25 pF, (1 cards)
Input hold time t
IH
5 ns C
L
≤ 25 pF, (1 cards)
Outputs CMD, DAT (referenced to CLK)
Output Delay time t
ODLY
0 14 ns C
L
≤ 25 pF, (1 cards)