HB28E016/D032/D064/B128MM2
80
Absolute Maximum Ratings
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional
operation under these conditions or at any other condition beyond those indicated in the operational
sections of this specification is not implied:
Parameter
Symbol
Min
Max
Unit
Remark
Supply voltage
V
CC
–
0.5
4.6
V
Total power dissipation
0.2
W
ESD
protection
Contact Pads
–
4
4
kV
Human body model
according to ANSI/EOS
ESD-S5.1-1998
Non Contact Pads
coupling plane discharge
–
8
8
kV
Human body model
according to IEC61000-4-2
Non Contact Pads
air discharge
–
16
16
kV
nputs
nput voltage
V
Imax
V
Omax
I
OHmax
I
OLmax
–
0.5
V
CC
+ 0.5 V
V
CC
+ 0.5 V
≤
max (V
CC
)
≤
max (V
CC
)
short cut protected
Outputs
Output voltage
–
0.5
High-level output current
–
100
mA
Low-level output current
150
mA
short cut protected
Bus Signal Line Load
The total capacitance C
L
of each line of the MultiMediaCard bus is the sum of the bus master capacitance
C
HOST
, the bus capacitance C
BUS
itself and the capacitance C
CARD
of each card connected to this line:
C
L
=
C
HOST
+
C
BUS
+
N*C
CARD
where N is the number of connected cards. Requiring the sum of the host and bus capacitance’s not to
exceed 30 pF for up to 10 cards, and 40 pF for up to 30 cards, the following values must not be exceeded:
Parameter
Symbol
Min
Max
Unit
Remark
Pull-up resistance for CMD
R
CMD
R
DAT
C
L
4.7
100
k
k
o prevent bus floating
Pull-up resistance for DAT
50
100
o prevent bus floating
Bus signal line capacitance
—
250
pF
≤
5 MHz,
30 cards
Bus signal line capacitance
C
L
—
100
pF
≤
20 MHz,
10 cards
Single card capacitance
C
CARD
—
7
pF
Maximum signal line inductance
—
16
nH
PP
≤
20 MHz