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Bus Timing
High Capacity microSD Card
Parameter
Clock frequency Data Transfer Mode
Clock frequency Identification Mode
Clock low time
Clock high time
Clock rise time
Clock fall time
Inputs CMD, DAT (referenced to CLK)
Input set-up time
Input hold time
Outputs CMD, DAT (referenced to CLK)
Symbol
f
PP
f
OD
t
WL
t
WH
t
TLH
t
THL
t
ISU
t
IH
6
Min
0
0
(1)
/100
10
10
Max.
25
400
Unit
MHz
KHz
ns
ns
Remark
C
CARD
≤
10 pF, (1 card)
C
CARD
≤
10 pF, (1 card)
C
CARD
≤
10 pF, (1 card)
C
CARD
≤
10 pF, (1 card)
C
CARD
≤
10 pF, (1 card)
C
CARD
≤
10 pF, (1 card)
C
CARD
≤
10 pF, (1 card)
C
CARD
≤
10 pF, (1 card)
Clock CLK (All values are referred to min (V
IH
) and max (V
IL
)
10
10
5
5
ns
ns
ns
ns
Transcend Information Inc.