TDA8004T

General description

The TDA8004T is a complete low cost analog interface for asynchronous smart cards. It can be placed between the card and the microcontroller with very few external components to perform all supply protection and control functions.

Features

• 3 V or 5 V supply for the IC (GND and V_DD)
• Step-up converter for V_CC generation (separately powered with a 5 V +- 10 pct supply, V_DDP and PGND)
• 3 specific protected half duplex bidirectional buffered I/O lines (C4, C7 and C8)
• V_CC regulation 5 V +- 5 pct on 2 x 100 nF or 1 x 100 nF and 1 x 220 nF multilayer ceramic capacitors with low Equivalent Series Resistance (ESR), I_CC < 65 mA at 4.5 V < V_DDP < 6.5 V, current spikes of 40 nAs up to 20 MHz, with controlled rise and fall times, filtered overload detection approximately 90 mA)
• Thermal and short-circuit protections on all card contacts
• Automatic activation and deactivation sequences (initiated by software or by hardware in the event of a short-circuit, card take-off, overheating or supply drop-out)
• Enhanced ElectroStatic Discharge (ESD) protection on card side (> 6 kV)
• 26 MHz integrated crystal oscillator
• Clock generation for the card up to 20 MHz (divided by 1, 2, 4 or 8 through CLKDIV1 and CLKDIV2 signals)
• Non-inverted control of RST via pin RSTIN
• ISO 7816, GSM11.11 and EMV (payment systems) compatibility
• Supply supervisor for spikes killing during power-on and power-off
• One multiplexed status signal OFF

Applications

• IC card readers for banking
• Electronic payment
• Identification
• Pay TV

Related applications
Mid-range integrated DTV (TV810)

Block diagrams/pinning

Technical documents

Application Notes

AN97074_1; TDA8006 mask nr.12 Double smart card reader using TDA8006 and TDA8004 interfaces (01-Oct-97)

Support Documents

UM10104_1; PNX8526 User Manual (2003-10-08)

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