Rainbow Electronics AT89C5122 - Manual (Page 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
CI
CC_ovf
Card Supply Current overflow 100 mA
CV
CC
Card Supply Voltage 4.6 5.4 V
V
cc
Min = 4.0V, CI
CC
= 60 mA
V
cc
Min = 3.0V, CI
CC
= 30 mA
Ripple on Card Voltage 200 mV 0 < CIcc < 60 mA
CV
CC
Card Supply Voltage during spike on Icc 4.5 5.5
Max. charge 20 nA.s
Max. duration 400 ns
Max. variation CI
CC
100 mA
T
OFF
CVcc to 0 750 μ s
Cload=10µF, Lload=10µH
Vcard = CVcc to 0.4V
T
ON
0 to CVcc 750 μ s
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
CI
CC_ovf
Card Supply Current overflow 100 mA
CV
CC
Card Supply Voltage 2.76 3.24 V
V
cc
Min = 3.6V, CI
CC
= 55mA
V
cc
Min = 3.0V, CI
CC
= 30 mA
Ripple on Vcard 200 mV 0 < CI
CC
< 55mA
CV
CC
Card Supply Voltage during spike on Icc 2.7 3.3 V
Maxi. charge 10nA.s
Max. duration 400 ns
Max. variation CI
CC
50mA
T
OFF
CVcc to 0 750 μ s
Cload=10µF, Lload=10µH
Vcard = CVcc to 0.4V
T
ON
0 to CVcc 750 μ s
Cload=10µF, Lload=10µH
Vcard = 0V to CVcc
With Boost at 60%