AT83C24 ATMEL Corporation, AT83C24 Datasheet - Page 33

• Manufacturer Part Number: AT83C24
• Description: Smart Card Reader Interface with Power Management
• Manufacturer: ATMEL Corporation

Table 23. Smart Card Clock (CCLK pin) (Continued)
Table 24. Smart Card I/O (CIO, CC4, CC8 pins)
4234E–SCR–09/04
Symbol
Symbol
CCLK
V
t
t
V
V
V
I
R
R
I
I
OS
IH
OH
IL
OL
IH
IL
t
t
F
F
Parameter
Rise and Fall Slew rate
Low level voltage stability
(taking into account PCB design)
High level voltage stability
(taking into account PCB design)
Smart card clock frequency
Parameter
Input Low-voltage
Input Low Current
Input High Voltage
Input High Current
Output Low-voltage
Output High Voltage
Output Short Circuit Current
Low level voltage stability
(taking into account PCB design)
High level voltage stability
(taking into account PCB design)
Output rise and fall time
Input rise and fall time
CVCC-0.4
-0.25
Min
0.12
2.35
0.2
4.2
0.75 x CVCC
0.6 x CVCC
0.7 x CVCC
0.9 x CVCC
CVCC-0.5
-0.3V
-0.25
-0.25
-0.25
Min
-20
-15
0
Typ
Typ
CVCC+0.25
CVCC+0.25
CVCC+0.25
CVCC+0.25
Max
0.5
24
CVCC
CVCC
CVCC
CVCC
Max
0.45
700
+20
+15
0.8
0.3
0.3
0.6
0.4
0.4
0.1
1
Unit
Unit
MHz
V/ns
mA
µA
V
V
V
V
V
V
V
V
A
s
s
CLASS A
CCLK from 0.5 to 4.2V
CLASS B
CCLK from 0.5 to 0.85 x
CVCC
CLASS A&B&C
CVCC = CLASS A
CVCC = CLASS B
CLASS C
C
I
CVCC = CLASS A&B&C
CVCC = CLASS A
CVCC = CLASS B & C
I
I
I
I
A&B&C
I
Short to GND or CVCC
CLASS A
CLASS B
CLASS C
CVCC = CLASS A&B&C
C
CLASS A:
measurement between
0.6V and 70% of CVCC
CLASS B & C:
measurement between
0.4V and 70% of CVCC
C
IL
OL
OL
OL
OH
OH
L
L
L
= 500 µA
= 30pF, CLK=48MHz
= 65 pF
= 65 pF
= -1 mA CLASS A
= -1 mA CLASS B
= -1 mA CLASS C
= 40 A CLASS
= 0 A, CLASS A&B
Test Conditions
Test Conditions
AT83C24
33