参数资料
型号: ST8024CTR
厂商: 意法半导体
英文描述: Smartcard interface
中文描述: 智能卡接口
文件页数: 9/30页
文件大小: 550K
代理商: ST8024CTR
ST8024
Electrical characteristics
9/30
Crystal connection (pins XTAL1 and XTAL2)
(V
DD
= 3.3V, V
DDP
= 5V, f
XTAL
= 10MHz,
unless otherwise noted. Typical values are to T
A
= 25°C)
Parameter
Test Conditions
Data Lines (PINS I/O, I/OUC, AUX1, AUX2, AUX1UC AND AUX2UC)
(V
DD
= 3.3V, V
DDP
=
5V, f
XTAL
= 10MHz, unless otherwise noted. Typical values are to T
A
= 25
°
C)
Parameter
Test Conditions
Data lines to card reader (pins I/O, AUX1 AND AUX2 with integrated 11k
Pull-up
resistor to V
CC
(V
DD
= 3.3V, V
DDP
= 5V, f
XTAL
= 10MHz, unless otherwise noted. Typical
values are to T
A
= 25°C)
Parameter
Test Conditions
Table 8.
Symbol
Min.
Typ.
Max.
Unit
C
XTAL1,2
External capacitance on
pins XTAIL1, XTAIL2
Depends on type of crystal or
resonator used
15
pF
f
XTAL
Crystal Frequency
2
26
MHz
f
XTAL1
Frequency applied on pin
XTAL1
0
26
MHz
V
IH
High level input voltage on
pin XTAIL1
0.7 V
DD
V
DD
+0.3
V
V
IL
Low level input voltage on
pin XTAIL1
-0.3
+0.3V
DD
V
Table 9.
Symbol
Min.
Typ.
Max.
Unit
t
D(I/O-I/OUC),
t
D(I/OUC-I/O)
I/O to I/OUC, I/OUC to I/O falling edge
delay
200
ns
t
pu
Active pull-up pulse width
100
ns
f
I/O(MAX)
Maximum frequency on data lines
1
MHz
C
I
Input capacitance on data lines
10
pF
Table 10.
Symbol
Min.
Typ.
Max.
Unit
V
O(inactive)
Output Voltage
Inactive mode
NO LOAD
0
0.1
V
I
O(inactive)
=1mA
0.3
I
O(inactive)
Output Current
Inactive mode; pin grounded
-1
mA
V
OH
High Level Output Voltage
No DC Load
0.9 V
CC
V
CC
+0.1
V
5 and 3 V cards; I
OH
<
- 40μA
|I
OH
|
10mA
0.75 V
CC
V
CC
+0.1
0
0.4
V
OL
Low Level Output Voltage
I
OL
= 1 mA
I
OL
15 mA
0
0.2
V
V
CC
-0.4
V
CC
V
IH
High Level Input Voltage
1.5
V
CC
+0.3
V
V
IL
Low Level Input Voltage
0.3
0.8
V
|I
LIH
|
High Level Input Leakage
Current
V
IH
= V
CC
10
μA
|I
IL
|
Low Level Input Current
V
IL
= 0 V
600
μA
R
PU
Integrated pull-up resistor
Pull-up resistor to V
CC
9
11
13
k
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