TDA8024AT

Standard smart card interface; IC card interface\n3 or 5 V supply for the IC (VDD and GND)\nThree specifically protected half-duplex bidirectional buffered I/O lines to card contacts C4, C7 and C8\nDC/DC converter for VCC generation separately powered from a 5 V +- 20 pct supply (VDDP and PGND)\n3 or 5 V +- 5 pct regulated card supply voltage ((VCC) with appropriate decoupling has the following capabilities: ICC< 80 mA at VDDP = 4 to 6.5 V\nHandles current spikes of 40 nAs up to 20 MHz\nControls rise and fall times\nFiltered overload detection at approximately 120 mA\nThermal and short-circuit protection on all card contacts\nAutomatic activation and deactivation sequences; initiated by software or by hardware in the event of a short-circuit, card take-off, overheating, VDD or VDDP drop-out\nEnhanced ESD protection on card side (>6 kV)\n26 MHz integrated crystal oscillator\nClock generation for cards up to 20 MHz (divided by 1, 2, 4 or 8 through CLKDIV1 and CLKDIV2 signals) with synchronous frequency changes\nNon-inverted control of RST via pin RSTIN\nISO 7816, GSM11.11 and EMV (payment systems) compatibility\nSupply supervisor for spike-killing during power-on and power-off and Power-on reset (threshold fixed internally or externally by a resistor bridge); not for TDA8024AT\nBuilt-in debounce on card presence contacts\nOne multiplexed status signal OFF.\nTarget ApplicationsIC card readers for banking\nElectronic payment\nIdentification\nPay TV.\n;

The TDA8024 is a complete and cost-efficient analog interface for asynchronous 3 V or 5 V smart cards. It can be placed between the card and the microcontroller to perform all supply, protection and control functions. Very few external components are required. The TDA8024AT is a direct replacement for the TDA8004AT.\nMore information can be obtained from the NXP internet site (www.nxp.com) and from “Application note AN10141”.\n

恩XP

TDA8024AT

IC card interface

PHI

TDA8024AT

IC card interface

TDA8024T

ICcardinterface

TDA8024T

ICcardinterface

PHI

TDA8024TT

ICcardinterface

PHI