Datasheet

TDA8025_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 6 April 2009 25 of 38
NXP Semiconductors
TDA8025
IC card interface
f
xtal
crystal frequency card clock reference;
crystal oscillator
2 - 26 MHz
f
ext
external
frequency
external clock on
pin XTAL1
0 - 26 MHz
V
IL
LOW-level input
voltage
pin XTAL1 −0.3 - +0.3V
DD(INTF)
V
V
IH
HIGH-level input
voltage
pin XTAL1
V
DD(INTF)
≤
V
DD(INTREGD)
0.7V
DD(INTF)
-V
DD(INTF)
+ 0.3 V
V
DD(INTF)
>
V
DD(INTREGD)
0.7V
DD(INTF)
-V
DD(INTREGD)
+
0.3
V
Data lines: pins I/O, I/OUC, AUX1, AUX2, AUX1UC and AUX2UC
t
d
delay time falling edge on pins I/O
and I/OUC or vise versa
- - 200 ns
t
w(pu)
pull-up pulse
width
- - 100 ns
f
io
input/output
frequency
on data lines - - 1 MHz
C
i
input
capacitance
on data lines - - 10 pF
Data lines to the card: pins I/O, AUX1 and AUX2
[4]
V
o
output voltage inactive mode
no load 0 - 0.1 V
I
o
= 1 mA - - 0.3 V
I
o
output current from data lines when in
inactive mode with pins
grounded
--−1mA
V
OL
LOW-level output
voltage
I
OL
= 1 mA 0 - 0.3 V
I
OL
≥ 15 mA V
CC
− 0.4 - V
CC
V
V
OH
HIGH-level
output voltage
no DC load 0.9V
CC
-V
CC
+ 0.1 V
I
OH
< −40 µA; 3 V 0.75V
CC
-V
CC
+ 0.1 V
I
OH
< −20 µA; 1.8 V or
1.2 V card
0.75V
CC
-V
CC
+ 0.1 V
current limit I
OH
= −15 mA 0 - 0.4 V
V
IL
LOW-level input
voltage
V
CC
= +3 V −0.3 - +0.8 V
V
CC
= +1.8 V −0.3 - +0.6 V
V
CC
= +1.2 V −0.3 - +0.4 V
V
IH
HIGH-level input
voltage
0.6V
CC
-V
CC
+ 0.3 V
V
hys
hysteresis
voltage
pin I/O - 350 - mV
I
IL
LOW-level input
current
pin I/O; V
IL
= 0 V - - 600 µA
Table 8. Characteristics of IC supply voltage
…continued
T
amb
=25 ° C; all parameters remain within limits but are only statistically tested for the temperature range; f
xtal
= 10 MHz; all
currents flowing into the IC are positive; unless otherwise specified. Parameters specified as a function of
V
DD(INTF)
,V
DDI(REG)
, V
DD(INTREGD)
or V
CC
refer to the actual value at the time of measurement.
Symbol Parameter Conditions Min Typ Max Unit