ST72411R datasheet(62/71 Pages) STMICROELECTRONICS

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ST72411R

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7.7 SMARTCARD SUPPLY SUPERVISOR ELECTRICAL CHARACTERISTICS

(TA = 0... +70

oC, V

DD -VSS = 6 V unless otherwise specified)

Figure 40. ISC Load with 5V Regulator Output (for IEC7816-3 Class A Cards)

SMARTCARD SUPPLY SUPERVISOR

Symbol

Parameter

Condit ions

Min

Typ

Max

Unit

SSS DRIVER bit SSR=1 : 5V regulator output (for IEC7816-3 Class A Cards)

VSC_PWR SmartCard Power Supply Voltage

VDD-VSS>VSC_PWR+0.5V

4.5

5.00

5.5

ISC

SmartCard Supply Current

VDD-VSS = 5.5V,

VSC_PWR=4.5V

VDD-VSS =6 V,

VSC_PWR=4.8V

VOVLD

Voltage Drop Threshold on Current

Overload

VDD-VSS = 6V, RVDD=0V

3.85

SSS DRIVER bit SSR=0 : 3V regulator output (for IEC7816-3 Class B Cards)

VSC_PWR SmartCard Power Supply Voltage

2.7

3.00

3.3

ISC

SmartCard Supply Current

VDD-VSS = 3.5V

TBD

VDD-VSS = 4.5V

VDD-VSS =5V

VOVLD

Voltage Drop Threshold on Current

Overload

VDD-VSS = 6V, RVDD=0V

2.4

Toff

VSC Turn off Time

CLOADmax=20uF

200

Ton

VSC Turn on Time

CLOADmax=20uF

200

Smart Card I/O Pins

VIL

Input Low Level Voltage

0.3V

SCP WR

VIH

Input High Level Voltage

0.7V

SCPW R

VOL

Output Low Level Voltage

I=-2.6mA

TBD

VOH

Output High Level Voltage

I=2.6mA

TBD

Input Leakage Current

VSS<VIN<VSC_PWR

-10

µA

IRPU

Pull-up Equivalent Resistance

VIN=VSS

250

Ω

TOHL

Output H-L Fall Time

Cl=50pF

TOLH

Output L-H Rise Time

Cl=50pF

VSC_PWR

Load

[mA]

5.0

4.5

4.0

ISC

5.5

3.5

VDD=6V

VDD=5.5V

VDD=6.5V

IEC7816-3 Spec

ST72411R 数据表(PDF) 62 Page - STMicroelectronics

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