AU9540 USB Smart Card Reader V1.6
9
5
5
.
.
3
3
D
D
C
C
E
E
l
l
e
e
c
c
t
t
r
r
i
i
c
c
a
a
l
l
C
C
h
h
a
a
r
r
a
a
c
c
t
t
e
e
r
r
i
i
s
s
t
t
i
i
c
c
s
s
o
o
f
f
3
3
.
.
3
3
V
V
I
I
/
/
O
O
C
C
e
e
l
l
l
l
s
s
Table 5.3 DC Electrical Characteristics of 3.3V I/O Cells
Limits
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
V
D33P
Power supply
3.3V I/O
3.0
3.3
3.6
V
V
il
Input low voltage
0.8
V
V
ih
Input high voltage
LVTTL
2.0
V
V
ol
Output low voltage
∣
I
ol
∣
=2~16mA
0.4
V
V
oh
Output high voltage
∣
I
oh
∣
=2~16mA
2.4
V
R
pu
Input pull-up resistance
PU=high, PD=low
55
75
110
K
Ω
R
pd
Input pull-down resistance PU=low, PD=high
40
75
150
K
Ω
I
in
Input leakage current
V
in
= V
D33P
or 0
-10
±
1
10
μ
A
I
oz
Tri-state output leakage
current
-10
±
1
10
μ
A
5
5
.
.
4
4
P
P
o
o
w
w
e
e
r
r
C
C
o
o
n
n
s
s
u
u
m
m
p
p
t
t
i
i
o
o
n
n
Table 5.4 Power Consumption
Status
Mode
Power Current
Note
With card present, before
being suspended.
Normal Mode
27.9 mA
This value may
vary with different
card.
Without card present, before
being suspended.
Normal Mode
19.2 mA
After being suspended with
smart card present
Normal Mode
390
μ
A
This value may
vary with different
card.
After being suspended without
smart card present
Normal Mode
350
μ
A
With card present, before
being suspended.
Power Saving
Mode
27.9 mA
This value may
vary with different
card.
Without card present
Power Saving
Mode
240
μ
A
This value may
vary with different
card.
After being suspended with
smart card present
Power Saving
Mode
390
μ
A
