73S8010C

www.DataSheet4U.com 73S8010C Smart Card Interface Simplifying System Integration™ DATA SHEET April 2009 DESCRIPTION The Teridian 73S8010C is a single smart card interface IC. It provides full electrical compliance with ISO-7816-3 and EMV 4.0 specifications. Interfacing with the host is done through the two-wire I2C bus. Data exchange with the card is managed from the system controller using the I/O line (and eventually the auxiliary I/O lines). An on-chip oscillator using an external crystal, or connection to a clock signal coming from the system controller can generate the card clock signal. The 73S8010C IC incorporates an ISO-7816-3 activation/deactivation sequencer that controls the card signals. Level shifters drive the card signals with the selected card voltage (3 V or 5 V), coming from an internal DC-DC converter. With its high-efficiency DC-DC converter, the Teridian 73S8010C is a cost-effective solution for any smart card reader application to be powered from a single 2.7 V to 3.6 V power supply. Hardware support for auxiliary I/O lines, C4 / C8 contacts, is provided. Emergency card deactivation is initiated upon card extraction or upon any fault generated by the protection circuitry. The fault can be a VDD (digital power supply), a VCC (card power supply), a card over-current, or an over-heating fault. ADVANTAGES   Single smart card interface The inductor-based DC-DC converter provides higher current and efficiency than the usual charge-pump capacitor-based con...