SDHC Card series
4~32GB High Capacity Secure Digital Card
Single card capacitance
CCARD
RDAT3
10
16
90
pF
nH
kΩ
Maximum signal line inductance
Pull-up resistance inside card (pin1)
fPP ≤ 20 MHz
10
May be used for card
detection
Note that the total capacitance of CMD and DAT lines will be consist of CHOST, CBUS and one CCARD 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 CHOST, CBUS, and CCARD, these parameters are
defined by per signal. The host can determine CHOST and CBUS so that total bus capacitance is less than the card estimated
capacitance load (CL=40 pF). The SD Memory Card guarantees its bus timing when total bus capacitance is less than
maximum value of CL (40 pF).
4
Transcend Information Inc.
TRANSCEND [ TRANSCEND INFORMATION. INC. ]
