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T
T
T
S
S
S
4
4
4
G
G
G
-
-
-
3
3
3
2
2
2
G
G
G
S
S
S
D
D
D
H
H
H
C
C
C
6
6
6
-
-
-
P
P
P
2
2
2
SDHC Memory Card + Reader P2
Transcend Information Inc.
•
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
CARD
≤
10 pF, (1 card)
Clock frequency Identification Mode f
OD
0
(1)
/100
400 KHz C
CARD
≤ 10 pF, (1 card)
Clock low time t
WL
10 ns C
CARD
≤
10 pF, (1 card)
Clock high time t
WH
10 ns C
CARD
≤ 10 pF, (1 card)
Clock rise time t
TLH
10 ns C
CARD
≤
10 pF, (1 card)
Clock fall time t
THL
10 ns C
CARD
≤
10 pF, (1 card)
Inputs CMD, DAT (referenced to CLK)
Input set-up time t
ISU
5 ns C
CARD
≤
10 pF, (1 card)
Input hold time t
IH
5 ns C
CARD
≤ 10 pF, (1 card)
Outputs CMD, DAT (referenced to CLK)