Rainbow-electronics AT83C26 Bedienungsanleitung PDF herunterladen (Seite 66)

7511B–SCR–10/05

AT83C26

Table 48. Host Interface (IO1, IO2, AUX1, AUX2, CLK, A2/CK, A1/RST, INT)

Symbol Parameter Min Typ Max Unit Test Conditions

Input Low-voltage 0.8 V

Input High Voltage 2.2 V

Output low voltage 0.3 V I

= -500µA

Output High Voltage VCC - 0.7V V I

= +30µA

Table 49. Host Interface (SCL, SDA, RESET)

Symbol Parameter Min Typ Max Unit Test Conditions

Input Low-voltage 0.8 V

Input High Voltage 2.2 V

Output low voltage 0.3 V I

= -3mA

Table 50. Smart Card 1 Class A, 5V (CVCC1)

Symbol Parameter Min Typ Max Unit Test Conditions

CVCC Smart card voltage 4.6 5 5.4 V

Load = 60mA

VCC = 3V to 5.5V if STEPREG = 0

VCC > 5.3V if STEPREG = 1

_ovf

Card Supply Current Overflow:

ICCADJA = 0 (reset value)

70 120 200 mA

Ripple on CVCC 70 200 mV

With low ESR capacitance

(0.1 Ohms max)

Spikes on CVCC 0.5 V

Vcardok up Vcardok high level threshold 5 V

Vcardok down Vcardok low level threshold 4.65 V

VHL

CVCC valid to 0.4V 100 500 μs C

=10μF

VLH

CVCC 0 to valid 1000 4000 μs C

= 10μF

Table 51. Smart Card 1 Class B, 3V (CVCC1)

Symbol Parameter Min Typ Max Unit Test Conditions

CVCC Smart card voltage 2.76 3.24 V

Load = 60mA

VCC = 3V to 5.5V if STEPREG = 0

VCC > 3.3V if STEPREG = 1

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