Smart card interface tda8001 – Philips TDA8001 User Manual
Page 17
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1996 Dec 12
17
Philips Semiconductors
Product specification
Smart card interface
TDA8001
Notes
1. Pins CMDVCC, VPP21, VPP15, VPP12.5, CMD7, CMD3.5 and PRES are active LOW; pins RSTIN and PRES are
active HIGH.
2. The transition time and duty cycle definitions are shown in Fig.12;
.
3. P is the card programming voltage set by pin VPP12.5, VPP15 or VPP21.
4. The tests for dynamic response of both V
PP
and V
CC
are performed at 1 Hz, 10 kHz, 100 kHz and 1 MHz, with a
capacitive load of 100 nF.
5. This condition ensures proper starting of the oscillator with crystals having a series resistance up to 100
Ω
.
V
IDLE
voltage on pin I/O outside a
session
−
−
0.4
V
Z
IDLE
impedance on pin I/O(
µ
C)
outside a session
10
−
−
M
Ω
R
pu
internal pull-up resistance
between pin I/O and V
CC
8
10
12
k
Ω
t
r
, t
f
rise and fall times
C
i
= C
o
=
30 pF
−
−
0.5
µ
s
Protections
T
sd
shut-down local temperature
−
135
−
°
C
I
CC(sd)
shut-down current at V
CC
−
−
150
−
mA
I
PP(sd)
shut-down current at V
PP
−
−
75
−
mA
I
I/O(lim)
current limitation on pin I/O
from I/O to I/O(
µ
C)
3
−
5
mA
Timing
t
act
activation sequence duration
see Fig.7
−
110
−
µ
s
t
de
deactivation sequence duration
see Fig.8
−
100
−
µ
s
t
3
start of the window for sending
CLK to the card
−
−
70
µ
s
t
5
end of the window for sending
CLK to the card
80
−
−
µ
s
t
st
maximum pulse width on
CMDVCC before V
CC
starts rising
−
−
30
µ
s
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
δ
t
1
t
1
t
2
+
---------------
=
Fig.12 Definition of transition times.
handbook, full pagewidth
MBH856
10%
90%
10%
VOH
VOL
1.5 V
90%
tf
tr
t2
t1
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