19-5404 Rev 2 6/12 73S8024RN Low-Cost Smart Card Interface DATA SHEET ADVANTAGES DESCRIPTION Traditional step-up converter is replaced by a LDO regulator: The 73S8024RN is a single smart card (ICC) interface IC Greatly reduced power dissipation that can be controlled by a dedicated control bus. The 73S8024RN has been designed to provide full electrical Fewer external components are required compliance with ISO 7816-3, EMV 4.0 (EMV2000) and Better noise performance NDS specifications. High current capability (90mA supplied to the card) Interfacing with the system controller is done through a SO28 package is pin-to-pin compatible with control bus, composed of digital inputs to control the industry-standard TDA8004 and TDA8024 interface, and one interrupt output to inform the system Card clock STOP (high and low) mode controller of the card presence and faults. Small format (4x4x0.85mm) 20QFN package option The card clock can be generated by an on-chip oscillator True card over-current detection using an external crystal or by connection to a clock signal. FEATURES Card Interface: The 73S8024RN incorporates an ISO 7816-3 activation/deactivation sequencer that controls the card Complies with ISO 7816-3, EMV 4.0, and NDS signals. Level-shifters drive the card signals with the An LDO voltage regulator provides 3V / 5V to the selected card voltage (3V or 5V), coming from an internal card from an external power supply input Low Drop-Out (LDO) voltage regulator. This LDO Provides at least 90mA to the card regulator is powered by a dedicated power supply input ISO 7816-3 Activation / Deactivation sequencer with V . Digital circuitry is separately powered by a digital PC emergency automated deactivation on card removal power supply V . DD or fault detected by the protection circuitry With its embedded LDO regulator, the 73S8024RN is a Protection includes 3 voltage supervisors that detect cost effective solution for any application where a 5V voltage drops on V (card), V (digital)**, and V CC DD PC (typically -5% +10%) power supply is available. (regulator) power supplies Hardware support for auxiliary I/O lines, C4 / C8 contacts, The V voltage supervisor threshold value can be DD is provided*. externally adjusted** Emergency card deactivation is initiated upon card Over-current detection 150mA max extraction or upon any fault generated by the protection Card clock stop high or low* circuitry. The fault can be a card over-current, a V DD 2 card detection inputs, 1 for each possible user (digital power supply)**, a V (regulator power supply), a PC polarity (card power supply) or an over-heating fault. V CC Auxiliary I/O lines, for C4 / C8 contact signals* The card over-current circuitry is a true current detection Card CLK clock frequency up to 20MHz function, as opposed to V voltage drop detection, as CC System Controller Interface: usually implemented in ICC interface ICs. 3 Digital inputs control the card activation / The V voltage fault has a threshold voltage that can be DD deactivation, card reset and card voltage adjusted with an external resistor or resistor network. It 4 Digital inputs control the card clock (division rate allows automated card deactivation at a customized V DD and card clock stop modes) voltage threshold value. It can be used, for instance, to 1 Digital output, interrupt to the system controller, match the system controller operating voltage range. allows the system controller to monitor the card APPLICATIONS presence and faults. Crystal oscillator or host clock, up to 27MHz Set-Top-Box Conditional Access and Pay-per- Regulator Power Supply: View Point of Sales and Transaction Terminals 4.75V to 5.5V (EMV 4.0) Control Access and Identification 4.85V to 5.5V (NDS) Digital Interfacing: 2.7V to 5.5V * Pins/functions not available on 20-pin QFN package. 6kV ESD Protection on the card interface ** User V threshold configuration not available on DD FLT Package: SO28, 20QFN or 32QFN 20-pin QFN package. Rev. 2 1 73S8024RN Data Sheet DS 8024RN 020 FUNCTIONAL DIAGRAM VDD VDDF ADJ NC VPC 21 20 12 18 17 5 2,9,16,25,32 6 3 2 6 VPC FAULT 4 1 1 DIGITAL POWER SUPPLY 13 21 22 GND V FAULT DD LDO GND VDD VOLTAGE SUPERVISOR V FAULT CC REGULATOR VOLTAGE REFERENCE 14 12 6 & GND ICC FAULT VOLTAGE SUPERVISORS 10 18 19 17 15 9 R-C VCC Int Clk CMDVCC OSC. 11 19 20 DIGITAL RSTIN CIRCUITRY 20 31 3 & 5V/3V ICC RESET 14 22 23 FAULT LOGIC 16 14 8 BUFFER OFF RST 18 29 1 CLKDIV1 19 30 2 ICC CLOCK CLKDIV2 15 13 7 ISO-7816 BUFFER CLK SEQUENCER 15 23 24 10 7 4 XTALIN PRES XTAL CLOCK 16 24 25 9 6 3 OSC GENERATION XTALOUT PRES 4 7 OVER CLKSTOP TEMP 5 8 CLKLEV TEMP FAULT 11 8 5 17 26 26 I/O I/OUC 13 11 27 ICC I/O BUFFERS AUX1 27 AUX1UC 28 12 10 28 AUX2 AUX2UC Pin numbers reference the 28SO package. Pin numbers reference the 32QFN package. Pin numbers reference the 20QFN package. Figure 1: 73S8024RN Block Diagram 2 Rev. 2