73S8024R Product Brief
Key Applications
Conditional Access and Pay-per-View
interfaces for Set-Top-Boxes, Digital
TVs and PVRs
Point of Sales & Transaction Terminals
Control Access & Identification
Key Advantages
Traditional step-up converter is
replaced by a LDO regulator:
-
Better noise performance
(typical factor 10:1 with existing
converter based ICs)
- Highest card current interface in the
market: With 90mA for the ICC, it is
suitable for high-performance smart
cards and Secure Access Modules
- More cost-effective
Pin-to-pin compatible with industry-
standards TDA8004 and TDA8024
Requires fewer external components
than typical ICC interface ICs
Card clock STOP (high and low) mode
32MLF (5x5x.08mm) package option:
The smallest card interface IC of the
industry!
Low-Cost Smart Card Interface IC
General Purpose Smart Card Electrical Interface with High Performance
The 73S8024R is a single smart card interface IC, compliant to the electrical require-
ments of ISO-7816-3. It is available either in a standard SO28 package, or in a 32-pin
MLF package (5mmx5mmx0.8mm), making it the smallest solution available today in
the market. It can be used in any micro-controller-based design, to implement a gener-
ic smart card reader (terminal) and is suitable for designs that need to comply with EMV
4.0 (EMV2000) or NDS LC-T056-G
1
specifications. The 73S8024R enables a micro-
controller to communicate with the smart card by using a dedicated digital control bus,
compatible with the industry standard devices TDA8004 & TDA8024.
A significant advantage of the 73S8024R over existing IC solutions is the use of a Low
Drop-Out (LDO) voltage regulator to generate the card power supply (V
CC
) from a nom-
inal power supply source (V
PC
) of 5V. Digital circuitry is separately powered by a digi-
tal power supply (V
DD
) typically 3.3V, which is independent from the 5V supply of the
LDO regulator. The LDO exhibits improved noise performance when compared to typi-
cal step-up converter based ICs, which generate a lot of undesired noise and ripple
causing problems when trying to comply with applicable standards. The LDO architec-
ture also allows the 73S8024R to be the highest card current capable smart card inter-
face IC available today in the market, with up to 90mA minimum provided to the card.
Finally, the LDO regulator IC solution, with fewer external components, make the
73S8024R a more cost effective solution for high-volume smart card readers in con-
sumer electronics applications such as set-top-boxes, digital TVs, or personal video
recorders.
The 73S8024R includes an ISO-7816 sequencer that controls the card activation/deac-
tivation. The card itself is also better protected, compared with existing ICs, since the
emergency card deactivation is initiated upon 5 possible hardware faults. These faults
are card extraction, card over-current, V
DD
fault, V
PC
fault (LDO regulator power sup-
ply), V
CC
fault (card power supply, output of the LDO regulator) or a die over-heating
fault.
The V
DD
fault detection has a threshold voltage that can be adjusted with an external
resistor or resistor network, allowing automated card deactivation at a customized V
DD
voltage threshold. This allows, for instance, customizing the automated card deactiva-
tion to match the operating voltage range of the host microcontroller.
The 73S8024R is the ideal solution for integration of a smart card reader in payment
systems, identification and conditional access terminals, where performance, small size
and low-cost are required.
Features
Card Interface
Complies with ISO-7816-3, EMV 4.0
and NDS LC-T056-G
1
Provides at least 90mA to the card
LDO voltage regulator provides 3V /
5V to the card from an external power
supply input
ISO-7816-3 Activation / Deactivation
sequencer with emergency automated
deactivation on card removal or fault
detected by the protection circuitry
Protection includes 3 voltage
supervisors that detect voltage drops
on V
CC
(card), V
DD
(digital), and V
PC
(regulator) power supplies
The V
DD
voltage supervisor threshold
value can be externally adjusted with
2 resistors
Over-current detection 150mA max.
Card clock stop (high or low)
2 card detection inputs, 1 for each
possible user polarity
Auxiliary I/O lines, for C4 / C8 contact
signals
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
6440 Oak Canyon
Irvine, CA 92618-5201
714-508-8800 (Tel)
714-508-8878 (Fax)
Power Supply
LDO Regulator (V
PC)
- 4.75V to 5.5V (EMV 4.0)
- 4.85V to 5.5V (NDS LC-T056-G)
Digital Interfacing (V
DD
): 2.7V to 5.5V
6KV ESD Protection on the card
interface
Package: SO28 or 32MLF
73S8024R Block Diagram
1
Pending NDS approval
For immediate technical information and the name of a local representative or distributor, visit
www.tdksemiconductor.com, send an e-mail to support@tdksemiconductor.com or call (714) 508-8800.
No responsibility is assumed by TDK Semiconductor Corporation for use of this product nor for any infringements of patents and trademarks or
other rights of third parties resulting from its use. No license is granted under any patents, patent rights or trademarks of TDK Semiconductor
Corporation, and the company reserves the right to make changes in specifications at any time without notice. Accordingly, the reader is cautioned
to verify that the data sheet is current before placing orders.
2003 TDK Semiconductor Corporation
11/03 - rev 1.0
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