GENERAL DESCRIPTION
The TDA8008 is a complete, one-chip, low cost dual smart card coupler.

FEATURES
• 8xC51 core with 16 kbytes or EPROM (TDA8008), 256 bytes RAM, 512 bytes AUXRAM, Timer 0, 1, 2 and enhanced UART
• Specific ISO 7816 UART, accessible with MOVX instructions for automatic convention processing, variable baud rate through frequency or division ratio programming, error management at character level for T = 0 protocol, extra guard time register
• Dual VCC generation (5 V ±5% or 3 V ±5%), maximum current of 60 mA with controlled rise and fall times
• Dual cards clock generation (up to 10 MHz) with two times synchronous frequency doubling
• Cards clock STOP HIGH or LOW or 1.25 MHz (from an integrated oscillator) for cards power reduction mode
• Automatic activation and deactivation sequences through an independent sequencer
• Supports the asynchronous protocols T = 0 and T = 1 in accordance with ISO 7816 and EMV
• Versatile 24-bit time-out counter for Answer To Reset (ATR) and waiting times processing
• 22 ETU counter for block guard time
• Supports synchronous cards
• Current limitations on cards contacts
• Special circuitry for killing spikes during power-on or off
• Supply supervisor for Power-on reset
• Step-up converter (supply voltage from 2.7 to 5.5 V at 16 MHz), doubler, tripler or follower according to VCC and VDD
• Speed up to 25 MHz at VDD = 5 V
• Additional I/O pin allowing the use of the ISO 7816 UART for an external card interface (pin IOAUX)
• Additional interrupt pin allowing detection of level toggling on an external signal (pin INTAUX)
• Fast and efficient swapping between the 3 cards due to separate buffering of parameters for each card
• Chip select input allowing use of several devices in parallel and memory space paging
• Enhanced ESD protections on card contacts (6 kV min.)
• Software library for easy integration within the application
• Development tool with a TDA8007B and a regular emulator.

APPLICATIONS
• Multiple smart card readers for multiprotocol applications (EMV banking, digital pay TV, access control, etc.).