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Figure 6: Signal Loading (MICRO SD Memory Card has no WP slider)
6.4 AC characteristics
Table 16: AC Characteristics Low Speed Mode
Parameter
Clock frequency in data transfer mode
Clock frequency in card id mode
Clock low time
Clock high time
Clock rise time
Clock fall time
CMD, DAT input setup time
CMD, DAT input hold time
CMD, DAT output delay time
CMD, DAT output delay time
Symbol
fPP
fOD
tWL
tWH
tTLH
tTHL
tISU
tIH
tODLY
tODLY
Min
0
0
10/50
10/50
5
5
0
0
Max
25
400
10/50
10/50
14
50
Unit
MHz
KHz
ns
ns
ns
ns
ns
ns
ns
ns
Notes
CL ≤ 100pF
CL ≤ 250pF
CL ≤ 100/250pF
CL ≤ 25pF
CL ≤ 25pF, data transfer
CL ≤ 25pF, identification
Notes
1.
2.
Rise and fall times are measured from 10% to 90% of voltage level.
CLK referenced to VIH min and VIL max.
3. CMD and DAT inputs and outputs referenced to CLK.
4. 0Hz means to stop the clock. The given minimum frequency range is for cases where a continuous clock is
required
5. Specified for one card
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.00
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
info@swissbit.com
S-200u_data_sheet_SD-NxBN_Rev102
Page 10 of 23
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