DESCRIPTION

The 73S8024RN is a single smart card (ICC) interface IC that can be controlled by a dedicated control bus. The 73S8024RN has been designed to provide full electrical compliance with ISO 7816-3, EMV 4.0 (EMV2000) and NDS specifications.

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. The card clock can be generated by an on-chip oscillator using an external crystal or by connection to a clock signal.

FEATURES

• Card Interface:

 - Complies with ISO 7816-3, EMV 4.0, and NDS

 - An LDO voltage regulator provides 3V / 5V to the card from an external power supply input

 - Provides at least 90mA 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 3 voltage supervisors that detect voltage drops on VCC (card), VDD (digital)**, and VPC (regulator) power supplies

 - The VDD voltage supervisor threshold value can be externally adjusted**

 - 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*

 - Card CLK clock frequency up to 20MHz

• 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 27MHz

• Regulator Power Supply:

 - 4.75V to 5.5V (EMV 4.0)

 - 4.85V to 5.5V (NDS)

• Digital Interfacing: 2.7V to 5.5V

• ±6kV ESD Protection on the card interface

• Package: SO28, 20QFN or 32QFN

APPLICATIONS

• Set-Top-Box Conditional Access and Pay-perView

• Point of Sales and Transaction Terminals

• Control Access and Identification

ADVANTAGES

• Traditional step-up converter is replaced by a LDO regulator:

 - Greatly reduced power dissipation

 - Fewer external components are required

 - Better noise performance

 - High current capability (90mA supplied to the card)

• SO28 package is pin-to-pin compatible with industry-standard TDA8004 and TDA8024

• Card clock STOP (high and low) mode

• Small format (4x4x0.85mm) 20QFN package option

• True card over-current detection