Rainbow-electronics AT89C5122 Manual de usuario descargar pdf (Pagina 189)

189

AT8xC5122/23

4202E–SCR–06/06

Smart Card Interface

Card VCC 5V (for IEC7816-3 Class A cards)

Symbol Parameter Min Typ Max Unit Test Conditions

Vcc Power Supply 3.0 5.5 V

CC_ovf

Card Supply Current overflow 100 mA

Card Supply Voltage 4.6 5.4 V

Min = 4.0V, CI

= 60 mA

Min = 3.0V, CI

= 30 mA

Ripple on Card Voltage 200 mV 0 < CIcc < 60 mA

Card Supply Voltage during spike on Icc 4.5 5.5

Max. charge 20 nA.s

Max. duration 400 ns

Max. variation CI

100 mA

OFF

CVcc to 0 750 μs

Cload=10µF, Lload=10µH

Vcard = CVcc to 0.4V

0 to CVcc 750 μs

Cload=10µF, Lload=10µH

Vcard = 0V to CVcc

With Boost at 60%

Card VCC 3V Power Supply (for IEC7816-3 Class B cards)

Symbol Parameter Min Typ Max Unit Test Conditions

Vcc Power Supply 3.0 5.5 V

CC_ovf

Card Supply Current overflow 100 mA

Card Supply Voltage 2.76 3.24 V

Min = 3.6V, CI

= 55mA

Min = 3.0V, CI

= 30 mA

Ripple on Vcard 200 mV 0 < CI

< 55mA

Card Supply Voltage during spike on Icc 2.7 3.3 V

Maxi. charge 10nA.s

Max. duration 400 ns

Max. variation CI

50mA

OFF

CVcc to 0 750 μs

Cload=10µF, Lload=10µH

Vcard = CVcc to 0.4V

0 to CVcc 750 μs

Cload=10µF, Lload=10µH

Vcard = 0V to CVcc

With Boost at 60%

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