73S8014R
Smart Card Interface
Simplifying System Integration™
DATA SHEET
September 2008
DESCRIPTION
APPLICATIONS
•
•
Set-Top-Box Conditional Access and Pay-per-View
General purpose smart card readers
The Teridian 73S8014R is a single smart card (ICC) interface
circuit, firmware compatible with 8024-type devices for
configurations where only asynchronous cards must be
supported. It is derived from the 73S8024RN industry-
standard electrical interface. The 73S8014R has been
optimized to match most of the typical Set-Top-Box / A/V
Conditional Access applications. Optimization essentially
involved a smaller pin-count, support for single I/O, and
maximum card current of 65mA (ISO-7816 / EMV
compliance).
ADVANTAGES
•
Same advantages as the Teridian 73S80xxR family:
VCC card generated by an LDO regulator
Very low power dissipation (saves up to 1/2W)
Fewer external components are required
Better noise performance
•
•
•
True card over-current detection
Firmware compatibility with all 8024 ICs
Small format 20SO package
The 73S8014R interfaces with the host processor through the
same bus (digital I/Os) as the 73S8024RN, which is
compatible with any other 8024-type IC. As a result, the
73S8014R is a very attractive cost-reduction path from
traditional 8024 ICs. The 73S8014R has been designed to
provide full electrical compliance with ISO 7816-3 and EMV
4.0 specifications.
FEATURES
•
Card Interface:
Complies with ISO 7816-3 and EMV 4.0
Supports 3V / 5V cards
Interfacing with the system controller is done through a
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.
ISO 7816-3 Activation / Deactivation sequencer
Automated deactivation upon hardware fault (i.e. upon
drop on VDD power supply or card overcurrent)
The card clock can be generated by an on-chip oscillator
using an external crystal or by connection to an externally
supplied clock signal.
The VDD voltage supervisor threshold value (fault) can
be externally adjusted
Over-current detection 130mA max
The 73S8014R incorporates an ISO 7816-3
Card CLK clock frequency up to 20MHz
activation/deactivation sequencer that controls the card
signals. Level-shifters drive the card signals with the
selected card voltage (3V or 5V), coming from an internal
Low Drop-Out (LDO) voltage regulator. This LDO regulator is
powered by a dedicated power supply input VPC. Digital
circuitry is powered separately by a digital power supply VDD
With its embedded LDO regulator, the 73S8024RN is a
cost-effective solution for any application where a 5V
(typically -5% +10%) power supply is available.
•
•
System Controller Interface:
3 Digital inputs control the card activation /
deactivation, card reset and card voltage
2 Digital inputs control the card clock frequency
.
1 Digital output, interrupt to the system controller,
reports to the host the card presence and faults
Crystal oscillator or host clock, up to 27MHz
Regulator Power Supply:
4.75V to 5.5V
Emergency card deactivation is initiated upon card extraction
or upon any fault detected by the protection circuitry. The
fault can be a card over-current, VCC undervoltage or power
supply fault (VDD). The card over-current circuitry is a true
current detection function, as opposed to VCC voltage drop
detection, as usually implemented in non-Teridian 8024
interface ICs.
•
•
•
•
Digital Interfacing: 2.7V to 5.5V
6kV ESD protection on the card interface
Package: SO 20-pin
RoHS compliant (6/6) lead-free package
The VDD voltage fault has a threshold voltage that can be
adjusted with an external resistor network. It allows
automated card deactivation at a customized VDD voltage
threshold value. It can be used, for instance, to match the
system controller operating voltage range.
Rev. 1.0
© 2008 Teridian Semiconductor Corporation
1
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