73S8024C Smart Card Interface Simplifying System Integration DATA SHEET April 2009 DESCRIPTION FEATURES The Teridian 73S8024C is a single smart card Card Interface: 1 interface IC. It provides full electrical compliance Complies with ISO-7816-3, EMV 4.0 and NDS 1 with ISO-7816-3, EMV 4.0 and NDS specifications . A DC-DC Converter provides 3V / 5V to the card from an external power supply input Interfacing with the system controller is done through High-efficiency converter: > 80% the control bus, composed of digital inputs to control V =3.3 V, V =5 V and I = 65 mA DD CC CC the interface, and one interrupt output to inform the system controller of the card presence and faults. Up to 100 mA supplied to the card Data exchange with the card is managed from the ISO-7816-3 Activation / Deactivation system controller using the I/O line (and eventually sequencer with emergency automated the auxiliary I/O lines). Hardware support for deactivation on card removal or fault auxiliary I/O lines, C4 / C8 contacts, is provided. detected by the protection circuitry Protection includes 2 voltage supervisors The card clock signal can be generated by an on-chip which detect voltage drops on card V and CC oscillator using an external crystal or by connection to on V power supplies DD a clock signal coming from the system controller. The V voltage supervisor threshold value DD can be externally adjusted The Teridian 73S8024C device incorporates an ISO-7816-3 activation/deactivation sequencer that True over-current detection (150 mA max.) controls the card signals. Level shifters drive the 2 card detection inputs, 1 for each possible card signals with the selected card voltage (3 V or user polarity 5 V), coming from an internal DC-DC converter. Auxiliary I/O lines, for C4/C8 contact signals Card clock up to 20 MHz With its high-efficiency DC-DC converter, the Teridian 73S8024C is a cost-effective solution for System Controller Interface: any smart card reader application to be powered 3 Digital inputs control the card activation / from a single 2.7 V to 3.6 V power supply. deactivation, card reset and card voltage 4 Digital inputs control the card clock Emergency card deactivation is initiated upon card (division rate and card clock stop modes) extraction or upon any fault generated by the protection circuitry. The fault can be a V (digital 1 Digital output, interrupt to the system DD power supply) or a V (card power supply) failure, controller, allows the system controller to CC a card over-current, an over-heating fault. monitor the card presence and faults. or Crystal oscillator or host clock, up to 27 MHz ADVANTAGES Power Supply: V 2.7 V to 3.6 V DD The only smart card interface IC firmware Power Down mode compatible with the TDA8004 operating with a 6 kV ESD Protection on the card interface single 2.7 V to 3.6 V power supply (allows removal of 5 V from the system) Package: SO28 The inductor-based DC-DC converter provides APPLICATIONS higher current and efficiency than the usual charge-pump capacitor-based converters Set-Top-Boxes , DVD / HDD Recorders Ideal for battery-powered applications Point of Sales and Transaction Terminals Suitable for high current cards and SAMs: Control Access and Identification (100 mA max) Power down mode: 2 A typical 1 Pending NDS approval. Rev. 1.3 2009 Teridian Semiconductor Corporation 1 73S8024C Data Sheet DS 8024C 023 FUNCTIONAL DIAGRAM VDD VDDF ADJ LIN VDD 21 18 5 6 6 6 7 NC ICC FAULT 4 22 GND V FAULT DD VDD VOLTAGE SUPERVISOR GND VOLTAGE REFERENCE V FAULT 14 CC DC-DC GND CONVERTER 8 PWRDN 17 VCC 19 Int Clk R-C CMDVCC OSC. 20 DIGITAL RSTIN CIRCUITRY ICC RESET 3 & 16 5V/ V BUFFER RST FAULT LOGIC 23 OFF 1 ICC CLOCK CLKDIV1 15 BUFFER 2 CLK ISO-7816-3 CLKDIV2 10 SEQUENCER 24 PRES XTALIN 9 XTAL CLOCK PRES 25 OSC GENERATION XTALOUT OVER TEMP TEMP FAULT 11 26 I/O IOUC 13 ICC I/O BUFFERS 27 AUX1 AUX1UC 12 28 AUX2 AUX2UC Pin number reference to SO28 Package Figure 1: 73S8024C Block Diagram 2 Rev. 1.3