Transcend Information TS8GSDHC 6 User Manual
Page 4
S
S
S
D
D
D
H
H
H
C
C
C
C
C
C
a
a
a
r
r
r
d
d
d
s
s
s
e
e
e
r
r
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4~32GB High Capacity Secure Digital Card
Transcend Information Inc.
4
Single card capacitance
C
CARD
10
pF
Maximum signal line inductance
16
nH
f
PP
≤ 20 MHz
Pull-up resistance inside card (pin1)
R
DAT3
10 90 k
Ω
May be used for card
detection
Note that the total capacitance of CMD and DAT lines will be consist of C
HOST
, C
BUS
and one C
CARD
only because they are
connected separately to the SD Memory Card host.
Host should consider total bus capacitance for each signal as the sum of C
HOST
, C
BUS
, and C
CARD
, these parameters are
defined by per signal. The host can determine C
HOST
and C
BUS
so that total bus capacitance is less than the card estimated
capacitance load (C
L
=40 pF). The SD Memory Card guarantees its bus timing when total bus capacitance is less than
maximum value of C
L
(40 pF).