73S8024C Interface Datasheet

73S8024C Datasheet, PDF, Equivalent


Part Number

73S8024C

Description

Smart Card Interface

Manufacture

Teridian Semiconductor

Total Page 22 Pages
Datasheet
Download 73S8024C Datasheet


73S8024C
Simplifying System Integration™
www.DataSheet4U.com
73S8024C
Smart Card Interface
DATA SHEET
April 2009
DESCRIPTION
The Teridian 73S8024C is a single smart card
interface IC. It provides full electrical compliance
with ISO-7816-3, EMV 4.0 and NDS specifications1.
Interfacing with the system controller is done through
the control bus, composed of digital inputs to control
the interface, and one interrupt output to inform the
system controller of the card presence and faults.
Data exchange with the card is managed from the
system controller using the I/O line (and eventually
the auxiliary I/O lines). Hardware support for
auxiliary I/O lines, C4 / C8 contacts, is provided.
The card clock signal can be generated by an on-chip
oscillator using an external crystal or by connection to
a clock signal coming from the system controller.
The Teridian 73S8024C device incorporates an
ISO-7816-3 activation/deactivation sequencer that
controls the card signals. Level shifters drive the
card signals with the selected card voltage (3 V or
5 V), coming from an internal DC-DC converter.
With its high-efficiency DC-DC converter, the
Teridian 73S8024C is a cost-effective solution for
any smart card reader application to be powered
from a single 2.7 V to 3.6 V power supply.
Emergency card deactivation is initiated upon card
extraction or upon any fault generated by the
protection circuitry. The fault can be a VDD (digital
power supply) or a VCC (card power supply) failure,
a card over-current, or an over-heating fault.
ADVANTAGES
The only smart card interface IC firmware
compatible with the TDA8004 operating with a
single 2.7 V to 3.6 V power supply (allows
removal of 5 V from the system)
The inductor-based DC-DC converter provides
higher current and efficiency than the usual
charge-pump capacitor-based converters
Ideal for battery-powered applications
Suitable for high current cards and SAMs:
(100 mA max)
Power down mode: 2 µA typical
FEATURES
Card Interface:
Complies with ISO-7816-3, EMV 4.0 and NDS1
A DC-DC Converter provides 3V / 5V to the
card from an external power supply input
High-efficiency converter: > 80% @
VDD=3.3 V, VCC=5 V and ICC = 65 mA
Up to 100 mA supplied to the card
ISO-7816-3 Activation / Deactivation
sequencer with emergency automated
deactivation on card removal or fault
detected by the protection circuitry
Protection includes 2 voltage supervisors
which detect voltage drops on card VCC and
on VDD power supplies
The VDD voltage supervisor threshold value
can be externally adjusted
True over-current detection (150 mA max.)
2 card detection inputs, 1 for each possible
user polarity
Auxiliary I/O lines, for C4/C8 contact signals
Card clock up to 20 MHz
System Controller Interface:
3 Digital inputs control the card activation /
deactivation, card reset and card voltage
4 Digital inputs control the card clock
(division rate and card clock stop modes)
1 Digital output, interrupt to the system
controller, allows the system controller to
monitor the card presence and faults.
Crystal oscillator or host clock, up to 27 MHz
Power Supply: VDD 2.7 V to 3.6 V
Power Down mode
6 kV ESD Protection on the card interface
Package: SO28
APPLICATIONS
Set-Top-Boxes , DVD / HDD Recorders
Point of Sales and Transaction Terminals
Control Access and Identification
1 Pending NDS approval.
Rev. 1.3
© 2009 Teridian Semiconductor Corporation
1

73S8024C
73S8024C Data Sheet
FUNCTIONAL DIAGRAM
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7
NC
22
GND
8
PWRDN
19
CMDVCC
20
RSTIN
3
5V/#V
23
OFF
CLKDIV1
CLKDIV2
1
2
24
XTALIN
25
XTALOUT
26
IOUC
27
AUX1UC
28
AUX2UC
VDD
21
VDDF_ADJ
18
LIN
5
6
VDD
6
6
VDD VOLTAGE SUPERVISOR
VOLTAGE REFERENCE
ICC FAULT
VDD FAULT
VCC FAULT
DC-DC
CONVERTER
XTAL
OSC
DIGITAL
CIRCUITRY
&
FAULT LOGIC
Int_Clk
R-C
OSC.
ICC RESET
BUFFER
CLOCK
GENERATION
ISO-7816-3
SEQUENCER
ICC CLOCK
BUFFER
TEMP FAULT
OVER
TEMP
ICC I/O BUFFERS
Pin number reference to SO28 Package
Figure 1: 73S8024C Block Diagram
4
GND
14
GND
17
VCC
16
RST
15
CLK
10
PRES
9
PRES
11
I/O
13
AUX1
12
AUX2
2 Rev. 1.3


Features www.DataSheet4U.com 73S8024C Smart Card Interface Simplifying System Integrati on™ DATA SHEET April 2009 DESCRIPTI ON The Teridian 73S8024C is a single sm art card interface IC. It provides full electrical compliance with ISO-7816-3, EMV 4.0 and NDS specifications1. Inter facing with the system controller is do ne through the control bus, composed of digital inputs to control the interfac e, and one interrupt output to inform t he system controller of the card presen ce and faults. Data exchange with the c ard is managed from the system controll er using the I/O line (and eventually t he auxiliary I/O lines). Hardware suppo rt for auxiliary I/O lines, C4 / C8 con tacts, is provided. The card clock sign al can be generated by an on-chip oscil lator using an external crystal or by c onnection to a clock signal coming from the system controller. The Teridian 73 S8024C device incorporates an ISO-7816- 3 activation/deactivation sequencer tha t controls the card signals. Level shifters drive the card signal.
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