73S8014RN

The 73S8014RN interfaces with the host processor through the same bus (digital I/Os) as the 73S8024RN, which is compatible with any other 8024-type IC. As a result, the 73S8014RN is a very attractive cost-reduction path from traditional 8024 ICs. The 73S8014RN has been designed to provide full electrical compliance with ISO 7816-3, EMV 4.0 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 73S8014RN has been optimized to match most of the typical Set-Top Box / A/V Conditional Access applications. Optimization essentially involved a smaller pin-count and support for single I/O. The 73S8014RN 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. The card clock can be generated by an on-chip oscillator using an external crystal or by connection to an externally supplied clock signal. In addition, the clock divider provides divisor values of divide by 1, 2, 4 and 6 that are compatible with NDS requirements. This LDO regulator is powered by a dedicated power supply input V PC: Digital circuitry is powered separately by a digital power supply V DD. With its embedded LDO regulator, the 73S8014RN is a cost-effective solution for any application where a 5V (typically -5% +10%) power supply is available. Emergency card deactivation is initiated upon card extraction or upon any fault detected by the protection circuitry. The fault can be a card over-current, VCC undervoltage or power supply fault (VDD ). The card over-current circuitry is a true current detection function, as opposed to VCC voltage drop detection, as usually implemented in non-Teridian 8024 interface ICs. The VDD voltage fault has a threshold voltage that can be adjusted with an external resistor network. It allows automated card deactivation at a customized VDD voltage threshold value. It can be used, for instance, to match the system controller operating voltage range. The Teridian 73S8014RN is a single smart card (ICC) interface circuit, firmware compatible with 8024-type devices for configurations where only asynchronous cards must be supported. It is derived from the 73S8024RN industry- standard electrical interface.

The features of 73S8014RN can be summarized as (1)complies with ISO 7816-3, EMV 4.0 and NDS; (2)73S8014RN device supports 3V / 5V cards up to 65mA; (3)ISO 7816-3 Activation / Deactivation sequencer; (4)automated deactivation upon hardware fault (i.e. upon drop on V DD power supply or card overcurrent); (5)The VDD voltage supervisor threshold value (fault) can be externally adjusted; (6)over-current detection 130mA max; (7)card CLK clock frequency up to 20MHz; (8)3 digital inputs control the card activation / deactivation, card reset and card voltage; (9)2 digital inputs control the card clock frequency; (10)1 digital output, interrupt to the system controller, reports to the host the card presence and faults; (11)crystal oscillator or host clock, up to 27MHz; (12)regulator power supply: -4.75V to 5.5V (EMV 4.0), - 4.85V to 5.5V (NDS); (13)digital interfacing: 2.7V to 5.5V; (14)6kV ESD protection on the card interface; (15)package: SO 20-pin; (16)RoHS compliant (6/6) lead-free package.

The absolute maximum ratings of 73S8014RN are (1)supply voltage VDD: -0.5 to 6.0 VDC; (2)supply voltage VPC: -0.5 to 6.0 VDC; (3)input voltage for digital inputs: -0.3 to (V DD +0.5) VDC; (4)storage temperature: -60 to 150°C; (5)pin voltage (except card interface): -0.3 to (V DD +0.5) VDC; (6)pin voltage (card interface): -0.3 to (V CC + 0.5) VDC; (7)ESD tolerance card interface pins: +/- 6kV; (8)ESD tolerance other pins: +/- 2kV.