SDHC Card series
4~32GB High Capacity Secure Digital Card
• Bus Timing
Parameter
Symbol
Min
Max.
Unit
Remark
Clock CLK (All values are referred to min (VIH) and max (VIL)
Clock frequency Data Transfer Mode
Clock frequency Identification Mode
Clock low time
fPP
fOD
tWL
tWH
tTLH
tTHL
0
0(1)/100
10
25
MHz CCARD ≤ 10 pF, (1 card)
KHz CCARD ≤ 10 pF, (1 card)
400
ns
ns
ns
ns
CCARD ≤ 10 pF, (1 card)
CCARD ≤ 10 pF, (1 card)
CCARD ≤ 10 pF, (1 card)
CCARD ≤ 10 pF, (1 card)
Clock high time
10
Clock rise time
10
10
Clock fall time
Inputs CMD, DAT (referenced to CLK)
Input set-up time
tISU
tIH
5
5
ns
ns
CCARD ≤ 10 pF, (1 card)
CCARD ≤ 10 pF, (1 card)
Input hold time
Outputs CMD, DAT (referenced to CLK)
6
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