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ST8024 Fiches technique(PDF) 5 Page - STMicroelectronics

No de pièce ST8024
Description  SMARTCARD INTERFACE
Download  23 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST8024 Fiches technique(HTML) 5 Page - STMicroelectronics

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Table 5: Electrical Characteristics Over Recommended Operating Conditions (VDD = 3.3V, VDDP =
5V, fXTAL = 10MHz, unless otherwise noted. Typical values are to Ta = 25°C)
Table 6: Step-up Converter (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical
values are to Ta = 25°C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VDD
Supply Voltage
2.7
6.5
V
VDDP
Supply Voltage for the
voltage doubler
VCC = 5V; |ICC| < 80 mA
4.0
5
6.5
V
VCC = 5V; |ICC| < 20 mA
3.0
6.5
IDD
Supply Current
Card Inactive
1.2
mA
Card Active; fCLK = fXTAL; CL = 30pF
1.5
IDDP
DC/DC converter Supply
Current
Inactive mode
0.1
mA
Active mode; fCLK = fXTAL; CL = 30pF;
|ICC| = 0
10
VCC = 5V; |ICC| = 80 mA
200
VCC = 3V; |ICC| = 65 mA
100
Vth2
Falling Threshold Voltage
on VDD
no external resistors at pin PORADJ;
VDD level falling
2.35
2.45
2.55
V
VHYS2
Hysteresis of Threshold
Voltage Vth2
no external resistors at pin PORADJ
50
100
150
mV
Vth(ext)rise External rising Threshold
Voltage on VDD
external resistor bridge at pin PORADJ;
VDD level rising
1.18
1.21
1.24
V
Vth(ext)fall External falling Threshold
Voltage on VDD
external resistor bridge at pin PORADJ;
VDD level falling
1.12
1.15
1.18
V
VHYS(ext) Hysteresis of Threshold
Voltage Vth(ext)
external resistor bridge at pin PORADJ
30
60
90
mV
∆VHYS(ext) Hysteresis of Threshold
Voltage Vth(ext) variation
with temperature
external resistor bridge at pin PORADJ
0.25
mV/K
tW
Width of internal Power-On
reset pulse
no external resistor at pin PORADJ
4
8
12
ms
external resistor bridge at pin PORADJ
8
16
24
IL
Leakage current on pin
PORADJ
VPORADJ < 0.5 V
-0.1
4
10
µA
VPORADJ > 1.0 V
-1
1
PTOT
Total power dissipation
Continuous operation; Ta = -25 to 85°C
0.56
W
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
fCLK
Clock Frequency
Card active
2.2
3.2
MHz
Vth(vd-vf) Threshold voltage for
Step-up Converter to
change to voltage follower
5 V card
5.2
5.8
6.2
V
3 V card
3.8
4.1
4.4
VUP(av)
Output Voltage on pin VUP
(average value)
VCC = 5 V
5.2
5.7
6.2
V
VCC = 3 V; VDDP = 3.3 V
3.5
3.9
4.3


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