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