Rainbow-electronics AT83C26 Bedienungsanleitung PDF herunterladen (Seite 70)

7511B–SCR–10/05

AT83C26

Table 59. Smart Card 1, 2, 3, 4, 5 Clock (CCLK1, CCLK2, CCLK3, CCLK4, CCLK5)

Symbol Parameter Min Typ Max Unit Test Conditions

Output low voltage 0.3 V

Class A: I

= -200µA

Class B: I

= -200µA

Class C: I

= -200µA

Output High Voltage 0.8 CVCC V

Class A: I

= 200µA

Class B: I

= 200µA

Class C: I

= 200µA

Rise time 16 ns

= 30pF Class A

= 30pF Class B

= 30pF Class C

Fall time 16 ns

= 30pF Class A

= 30pF Class B

= 30pF Class C

Low level voltage stability

(taking into account PCB design)

-0.25

0.6

0.4

Class A

Class B

Class C

High level voltage stability

(taking into account PCB design)

CVCC-0.5 CVCC+0.25 V

CVCC= Class A, Class B

or Class C

CCLK Smart card clock frequency 24 MHz

Table 60. Smart Card n I/Os (CIOn, CC4n, CC8n, CRSTn) (n =1, 2, 3, 4, 5)

Symbol Parameter Min Typ Max Unit Test Conditions

Input Low-voltage -0.5 0.15 CVCC V

Input High Voltage 0.7 CVCC CVCC + 0.5 V

Output Low-voltage 0.3 V I

= -1mA

Output High Voltage 0.8 CVCC V

Class A: I

= 20µA

Class B: I

= 20µA

Class C: I

= 20µA

Input Low Current 500 µA

Input High Current -20 +20 μA

Output Short Circuit Current -15 +15 mA Short to GND or CVCC

Low level voltage stability

(taking into account PCB design)

-0.25

0.6

0.4

Class A

Class B

Class C

High level voltage stability

(taking into account PCB design)

CVCC-0.5 CVCC+0.25 V

CVCC= Class A, Class B

or Class C

Rise time 100 μs

= 30pF Class A

= 30pF Class B

= 30pF Class C

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