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NXP Semiconductors Electronic Components Datasheet

TDA8034AT Datasheet

Smart Card Interface

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TDA8034T; TDA8034AT
Smart card interface
Rev. 3.1 — 13 December 2012
Product data sheet
1. General description
The TDA8034T/TDA8034AT is a cost-effective analog interface for asynchronous and
synchronous smart cards operating at 5 V or 3 V. Using few external components, the
TDA8034T/TDA8034AT provides all supply, protection and control functions between a
smart card and the microcontroller.
2. Features and benefits
Integrated circuit smart card interface in an SO16 package
5 V or 3 V smart card supply
One protected half-duplex bidirectional buffered I/O line (C7)
VCC regulation:
5 V 5 % or 3 V 5 % using two low ESR multilayer ceramic capacitors: one of
220 nF and one of 470 nF
current spikes of 40 nA/s (VCC = 5 V and 3 V) or 15 nA/s (VCC =1.8 V) up to
20 MHz, with controlled rise and fall times and filtered overload detection of
approximately 120 mA
Thermal and short-circuit protection for all card contacts
Automatic activation and deactivation sequences triggered by a short-circuit, card
take-off, overheating, falling VDD, VDD(INTF) or VDDP
Enhanced card-side ElectroStatic Discharge (ESD) protection of > 6 kV
External clock input up to 26 MHz connected to pin XTAL1
Card clock generation up to 20 MHz using pin CLKDIV1 with synchronous frequency
changes of:
12 fxtal or 14 fxtal on TDA8034T
fxtal or 12 fxtal on TDA8034AT
Non-inverted control of pin RST using pin RSTIN
Compatible with ISO 7816, NDS and EMV 4.2 payment systems
Supply supervisor for killing spikes during power on and off:
using a fixed threshold
using an external resistor bridge with threshold adjustment
Built-in debouncing on card presence contacts (typically 4.5 ms)
Multiplexed status signal using pin OFFN
3. Applications
Pay TV
Electronic payment


NXP Semiconductors Electronic Components Datasheet

TDA8034AT Datasheet

Smart Card Interface

No Preview Available !

NXP Semiconductors
TDA8034T; TDA8034AT
Smart card interface
Identification
Bank card readers
4. Quick reference data
Table 1. Quick reference data
VDDP = 5 V; VDD = 3.3 V; VDD(INTF) = 3.3 V; fxtal = 10 MHz; GND = 0 V; Tamb = 25 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ Max
Supply
VDDP
VDD
VDD(INTF)
IDD
IDDP
power supply voltage
supply voltage
interface supply voltage
supply current
power supply current
pin VDDP
pin VDD
pin VDD(INTF)
Shutdown mode
Shutdown mode; fxtal
stopped
4.85 5
2.7 3.3
1.6 3.3
--
--
5.5
3.6
VDD + 0.3
35
5
IDD(INTF)
interface supply current
Card supply voltage: pin VCC[1]
VCC supply voltage
Active mode;
fCLK = 12 fxtal; no load
Shutdown mode
active mode
5 V card
- - 1.5
--6
ICC < 65 mA DC
current pulses of
40 nA/s at
ICC < 200 mA;
t < 400 ns
4.75 5.0
4.65 5.0
5.25
5.25
Vripple(p-p)
peak-to-peak ripple voltage from 20 kHz to 200 MHz
-
-
350
ICC supply current
VCC = 0 V to 5 V or 3 V - - 65
General
tdeact
Ptot
Tamb
deactivation time
total power dissipation
ambient temperature
see Figure 7 on page 11
Tamb = 25 C to +85 C
35 90
--
25 -
250
0.25
+85
Unit
V
V
V
A
A
mA
A
V
V
mV
mA
s
W
C
[1] To meet these specifications, VCC should be decoupled to pin GND using two ceramic multilayer capacitors of low ESR with values of
either 100 nF or one 220 nF and one 470 nF.
5. Ordering information
Table 2. Ordering information
Type number
Package
Name
TDA8034T/C1
SO16
TDA8034AT/C1
Description
plastic small outline package; 16 leads; body width 3.9 mm
Version
SOT109-1
TDA8034T_TDA8034AT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3.1 — 13 December 2012
© NXP B.V. 2012. All rights reserved.
2 of 30


Part Number TDA8034AT
Description Smart Card Interface
Maker NXP
Total Page 30 Pages
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