73S8009CN Combo ISO-7816 and USB Universal Smart Card Interface IC Simplifying System Integration DATA SHEET DS 8009C 026 August 2009 FEATURES Smart Card Interface: DESCRIPTION Smart card voltage V : CC The Teridian 73S8009CN is the worlds first o Selectable: 1.8V, 3V or 5V single-chip smart card electrical interface circuit that o Generated by an internal voltage regulator supports all types of smart cards: 5V, 3V and 1.8V, o Provides up to 65mA to 3V and 5V cards including traditional ISO-7816-3 asynchronous and and up to 40mA to 1.8V cards synchronous type 1 and type 2, as well as USB, ISO-7816-3 card emergency deactivation ISO-7816-12 cards. Voltage supervisor detects voltage drop on V (card supply) The 73S8009CN is ideally suited for applications CC such as desktop computers, laptops and general True card over-current detection 150mA max. purpose smart card readers that require low power 1 input for a card presence detection switch operation from a single 2.7V to 6.5V power supply Auxiliary I/O lines for synchronous and voltage source. A power down mode (OFF mode) ISO-7816-12 USB card support is available and exhibits a 10nA typical current Proper isolation of smart card signals consumption. depending on smart card type Card CLK clock frequency up to 20MHz The circuit provides control, conversion and regulation 6kV ESD and short circuit protection on the of power for the smart card. In addition, the circuit card interface provides a 3.3V-regulated voltage that is used as an internal digital supply voltage to the host interface. It is System Controller Interface: also made available to supply power to some external Digital logic level: 3.3V circuitry (a host controller for instance). 5 signal images of the card signals (RSTIN, CLKIN, I/OUC, AUX1UC and AUX2UC) For asynchronous and synchronous smart card 1 control signal to switch between operation, the signals for RST, CLK, I/O and auxiliary synchronous / asynchronous and signals AUX1 and AUX2 are directly controlled from ISO-7816-12 USB smart card modes the host processor and are level-shifted by the circuit 2 inputs activate and select the card voltage to the selected V value. For more design flexibility, CC (CMDVCC% and CMDVCC ) the host processor is responsible for handling the signal timing for smart card activation and de- 2 outputs, interrupt to the system controller activation under normal conditions. (OFF and RDY), to inform the system controller of the card presence / faults and The power management circuitry allows operation status of the interface from a single power supply source V (2.7V to 6.5V). PC 1 Chip Select input V is converted using an inductive, step-up power PC 2 handshaking signals (OFF REQ, converter to the intermediate voltage, V . V is used P P OFF ACK) for proper shutdown sequencing by linear voltage regulators and switches internal to of all smart card signals the IC to create the voltages V and as required, DD ON/OFF Input for a Main System Switch V . V is used by the 73S8009CN and is also CC DD DC-DC Step-up Converter: made available for the companion host processor circuit or for other external circuits. Generates an intermediary voltage V P Requires a single 10H Inductor (rated for The 73S8009CN features an ON/OFF pin suitable to 400mA maximum peak current) connect to a push-on/push-off main system switch. V power supply output available to power up DD When the 73S8009CN is OFF, the typical current external circuitry: 3.3V 0.3V, 40mA drawn from VPC is 10nA. For applications that do not implement any ON/OFF system switch, the Industrial temperature range (-40 C to +85 C) ON/OFF input pin can be driven from a digital output Small format QFN32 package: 5x5mm of the host processor. RoHS compliant (6/6) lead-free package Rev. 1.4 2009 Teridian Semiconductor Corporation 1 V1.8ThREF V3.0ThREF V5.0ThREF 73S8009CN Data Sheet DS 8009CN 026 FUNCTIONAL DIAGRAM 24K ON/OFF Debounce and Latch VPC OFF REQ ON 10uH 10F 0.1F 100K Linear/ OFF DC - DC OFF ACK LIN Converter VP Analog - Delay/ Mux CS Debounce RDY Circuit + CMDVCC CMDVCC% Card VCC Supply VCC Regulator PRES and 0.47F Vcc Status Control TEST1 SHUTDOWN Logic OFF TEST2 I/OUC I/O RSTIN RST CLKIN CLK Card I/O DP Buffer AUX1 and AUX1UC Signal Logic To Internal DM Digital Logic AUX2 AUX2UC SC/USB VDD 3.3V Regulator 0.1F 0.1F GND GND GND VP 4.7F Figure 1: 73S8009CN Block Diagram 2 Rev. 1.4