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ST7GEME4 Datasheet(PDF) 20 Page - STMicroelectronics

No. de pieza ST7GEME4
Descripción Electrónicos  Full-speed USB MCU with smartcard firmware and EMV/non-EMV interface
PDF  28 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7GEME4 Datasheet(HTML) 20 Page - STMicroelectronics

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Electrical characteristics
ST7GEME4
20/28
3 V regulator output (for IEC 7816-3 Class B Cards)
VCRDVCC
SmartCard power supply
voltage
2.7
3.3
V
ISC
SmartCard supply current
50
mA
IOVDET
Current overload detection
100(1)
mA
tIDET
Detection time on current
overload
170(1)
1400(1)
µs
tOFF
VCRDVCC turn-off time
CLOADmax ≤ 4.7µF
750
µs
tON
VCRDVCC turn-on time
CLOADmax ≤ 4.7µF
150
500
µs
1.8V regulator output (for IEC 7816-3 Class C Cards)
VCRDVCC
SmartCard power supply
voltage
1.65
1.95
V
ISC
SmartCard supply current
20
mA
IOVDET
Current overload detection
100(1)
mA
tIDET
Detection time on current
overload
170(1)
1400(1)
µs
tOFF
VCRDVCC turn-off time
CLOADmax ≤ 4.7µF
750
µs
tON
VCRDVCC turn-on time
CLOADmax ≤ 4.7µF
150
500
µs
Smartcard CLKPin
VOL
Output low level voltage
I = -50 µA
-
-
0.4(3)
V
VOH
Output high level voltage
I = 50 µA
VCRDVCC-0.5
(3)
--
V
TOHL
Output high to low fall time(1)
Cl = 30 pF
-
20
ns
TOLH
Output low to high rise time(1)
Cl = 30 pF
-
20
ns
FVAR
Frequency variation(1)
-1
%
FDUTY
Duty cycle(1)
45
55
%
POL
Signal low perturbation(1)
-0.25
0.4
V
POH
Signal high perturbation(1)
VCRDVCC-0.5
VCRDVCC
+0.25
V
ISGND
Short-circuit to ground(1)
15
mA
Smartcard I/O Pin
VIL
Input low level voltage
-
-
0.5(3)
V
VIH
Input high level voltage
0.6VCRDVCC
(3)
--
V
VOL
Output low Level Voltage
I = -0.5 mA
-
-
0.4(3)
V
VOH
Output high level voltage
I = 20 µA
0.8VCRDVCC
(3)
-VCRDVCC
(3)
V
IL
Input leakage current(1)
VSS<VIN<VSC_PWR
-10
-
10
µA
IRPU
Pull-up equivalent resistance
VIN=VSS
24
30
k
Ω
Table 18.
Smartcard supply supervisor characteristics (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit



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