64MB/128MB/256MB/512MB MultiMediaCard
TM
3. Recommend Operating Conditions
Parameter
Supply voltage
Inputs
Low-level input current
High-level input current
Outputs
High-level output current
Low-level output current
Clock
Clock frequency data
transfer mode (pp)
Input clk
Clock frequency ident.
Mode (od)
Clock cycle time data
transfer mode (pp)
Clock cycle time ident.
Mode (od)
Clock low time
Clock high time
Clock input rise time
Clock input fall time
Clock low time
Clock high time
Clock input rise time
Clock input fall time
Tpp =
1/fpp
tOD =
1/fOD
tWL
tWH
tLH
tHL
tWL
tWH
tLH
tHL
50
50
50
50
10
10
10
10
ns
ns
ns
ns
ns
mA
mA
MHz
CL<100pF,(10 cards)
CL<100pF,(10 cards)
CL<100pF,(10 cards)
CL<100pF,(10 cards)
CL<250pF,(30 cards)
CL<250pF,(30 cards)
CL<250pF,(30 cards)
CL<250pF,(30 cards)
2.5
µs
50
ns
fOD
0
400
KHz
Symbol
VCC
VIL
VIH
IOH
IOL
fpp
0
Min
2.7
VSS-0.3
0.625VCC
-2
6
20
Typ
3.0
Max
3.6
0.25VCC
VCC+0.3
Unit
V
V
V
mA
mA
MHz
CL<100pF,(10 cards)
Remark
4. Recommend Bus Conditions
Parameter
Clock
Input clk
Pull-up resistance for CMD
Pull-up resistance for DAT
Bus signal line capacitance
Symbol
RCMD
RDAT
CL
Min
4.7
50
Typ
Max
100
100
250
100
Maximum signal line inductance
16
Unit
KΩ
KΩ
pF
pF
nH
Remark
To prevent bus floating
To prevent bus floating
fpp≦5MHz, 30 cards
fpp≦20MHz, 10 cards
fpp≦20MHz
Eorex Corporation
www.eorex.com
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EOREX [ EOREX CORPORATION ]
