Rainbow-electronics AT83C26 Bedienungsanleitung PDF herunterladen (Seite 71)

7511B–SCR–10/05

AT83C26

Fall time 100 μs

= 30pF Class A

= 30pF Class B

= 30pF Class C

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

Symbol Parameter Min Typ Max Unit Test Conditions

Table 61. Card Presence (CPRES1, CPRES2)

Symbol Parameter Min Typ Max Unit Test Conditions

OL1

CPRES1 weak pull-up output current 3 10 25 µA

Short to VSS

PULLUP1 = 1:

Internal pull-up active

CPRES2

CPRES2 weak pull-up output current 3 10 25 µA

Short to VSS

PULLUP2 = 1:

Internal pull-up active

Table 62. DCDCB

Symbol Parameter Min Typ Max Unit Test Conditions

CVCCB DCDCB output voltage

4.9

5.3

3.35

2.4

Load = 70mA

Load = 40mA

Load = 10mA

Ripple on CVCCB 200 mV

Vcardok up Vdcbok high level threshold

5.3

3.35

2.4

Class A

Class B

Class C

Vcardok

down

Vdcbok low level threshold

4.9

3.1

2.1

Class A

Class B

Class C

VHL

VDCB valid to 0 100 500 μs

VLH

VDCB 0 to valid 1000 4000 μs

Table 63. Slew rate on CIOn with CVCCn= 5V (n=1, 2, 3, 4, 5), Mode 1

Symbol Parameter Min Typ Max Unit Test Conditions

R/F

Rise time/ Fall time

with CIOn_SLEW_CTRL[1-0] = 00 (5V)

or CIOn_SLEW_CTRL[1-0] = 11(mode auto)

12 ns

Rise time

with CIOn_SLEW_CTRL[1-0] = 01 (3V)

7 ns

Rise time

with CIOn_SLEW_CTRL[1-0] = 10 (1.8V)

2.7 ns

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 77

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