73S8024RN

www.DataSheet4U.com 73S8024RN Low Cost Smart Card Interface DATA SHEET May 2010 DESCRIPTION The Teridian 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. The 73S8024RN incorporates an ISO-7816-3 activation/deactivation sequencer that controls the card signals. Level-shifters drive the card signals with the selected card voltage (3V or 5V), coming from an internal Low Drop-Out (LDO) voltage regulator. This LDO regulator is powered by a dedicated power supply input VPC. Digital circuitry is separately powered by a digital power supply VDD. With its embedded LDO regulator, the 73S8024RN is a cost effective solution for any application where a 5V (typically -5% +10%) power supply is available. 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 card over-current, a VDD (digital power supply)**, a VPC (regulator power...