TDA8008

· 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 V_CC and V_DD
· Speed up to 25 MHz at V_DD = 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.

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

It can be used as the kernel of a multiple card reader. It can handle all ISO 7816, EMV and GSM11-11 requirements.
The integrated ISO 7816 UART and the time-out counters allow easy use even at high baud rates with no real time
constraints. Due to its chip select and external I/O and interrupt features, it simplifies the realization of any number of cards reader. It gives the cards and the set a very high level of security, due to its special hardware against ESD, short-circuiting, power failure and overheating. Its integrated step-up converter allows operation within a supply voltage range of 2.7 to 5.5 V at 16 MHz.

The OTP version of the TDA8008 allows fast and reliable software development and fast product introduction.

A software library has been developed, that can handle all actions required for T = 0, T = 1 and synchronous
protocols.