73S8010R

The Teridian 73S8010R 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 Low Drop-Out (LDO) voltage regulator. This LDO regulator is powered by a dedicated power supply input, V PC. Digital circuitry is separately powered by a digital power supply, vdd. Interfacing with the host is done through the two-wire I 2 C bus and one interrupt output to inform the system controller of the card presence and faults. With its embedded LDO regulator, the Teridian 73S8010R is a cost-effective solution for any application where a 5 V (typically -5% +10%) power supply is available. The Teridian 73S8010R is a single smart card interface IC that provides full electrical compliance with ISO-7816-3 and EMV 4.0 (EMV2000) specifications. 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 V DD (digital power supply), a V PC (regulator power supply), a V CC (card power supply) or an over-heating fault. The card over-current circuitry is a true current detect function, as opposed to V CC voltage drop detection, as usually implemented in ICC interface ICs. The V DD voltage fault has a threshold voltage that can be adjusted with an external resistor or resistor network. It allows automated card deactivation at a customized V DD voltage threshold value. It can be used, for instance, to match the system controller operating voltage range. The card clock signal can be generated by an on-chip oscillator using an external crystal, or by connection to a clock signal.

The features of 73S8010R can be summarized as (1)card interface; (2)complies with ISO-7816-3 and EMV 4.0; (3)an LDO voltage regulator provides 3 V / 5 V to the card from an external power supply input; (4)ISO-7816-3 activation / deactivation sequencer with emergency automated deactivation on card removal or fault detected by the protection circuitry; (5)protection includes 3 voltage supervisors that detect voltage drops on V CC card and on power supplies V DD and V PC; (6)over-current detection 150 mA max; (7)1 card detection input; (8)auxiliary I/O lines, for C4 / C8 contact signals; (9)host interface; (10)fast mode, 400 kbps I 2 C slave bus; (11)8 possible devices in parallel; (12)one control register and one status register; (13)interrupt output to the host for fault detection; (14)crystal oscillator or host clock, up to 27 MHz; (15)6 kV ESD protection on the card interface; (16)SO28 or QFN32 package:

The absolute maximum ratings of 73S8010R are (1)supply voltage V DD: -0.5 to 6.0 VDC; (2)supply voltage V PC: -0.5 to 6.0 VDC; (3)input voltage for digital inputs: -0.3 to (V DD +0.5) VDC; (4)storage temperature: -60 °C 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: +/- 6 kV; (8)ESD tolerance other pins : +/- 2 kV.