TDA8007B

General description

The TDA8007BHL/C is a cost-effective card interface for dual smart card readers. Controlled through a parallel bus, it meets all requirements of:

• ISO 7816, GSM 11-11 and EMV 3.1.1
  (TDA8007BHL/C2 and TDA8007BHL/C3)
  
• ISO 7816, GSM 11-11 and EMV 2000
  (TDA8007BHL/C3).
  

It may be interfaced to the ports P0, P1 and P2 of a 80C51 family microcontroller, and be addressed as a memory through MOVX instructions. It may also be addressed on a non-multiplexed 8-bit data bus, by means of address registers AD0, AD1, AD2 and AD3. The integrated ISO UART and the time-out counters allow easy use even at high baud rates with no real time constraints. Due to its chip select, external input/output and interrupt features, it greatly simplifies the realization of a reader of any number of cards. It gives the cards and the reader a very high level of security, due to its special hardware against ESD, short-circuiting, power failure, etc. The integrated step-up converter allows operation within a supply voltage range of 2.7 to 6 V; it may be supplied with a voltage higher than the IC?s supply.

A software library has been developed that covers all actions required for T = 0 and T = 1 and synchronous protocols (see application note ?AN01054?).

Features

• Control and communication through an 8-bit parallel interface, compatible with multiplexed or non-multiplexed memory access
• Specific ISO UART with parallel access input/output for automatic convention processing, variable baud rate through frequency or division ratio programming, error management at character level for T = 0 and extra guard time register
• FIFO for 1 to 8 characters in reception mode
• Parity error counter in reception mode and in transmission mode with automatic re-transmission
• Dual V_CC generation: 5 V +- 5pct, 65 mA (max.); 3 V+-8pct, 50 mA (max.) or 1.8 V +- 10pct, 30 mA (max.); with controlled rise and fall times
• Dual cards clock generation (up to 10 MHz), with three times synchronous frequency doubling (f_XTAL , 1/2 f_XTAL , 1/4 f_XTAL and 1/8 f_XTAL )
• Cards clock stop (at HIGH or LOW level) or 1.25 MHz (from internal oscillator) for cards Power-down mode
• Automatic activation and deactivation sequence through an independent sequencer
• Supports the asynchronous protocols T = 0 and T = 1 in accordance with:
• ISO 7816 and EMV 3.1.1 (TDA8007BHL/C2 and TDA8007BHL/C3)
• ISO 7816 and EMV 2000 (TDA8007BHL/C3)
• Versatile 24-bit time-out counter for Answer To Reset (ATR) and waiting times processing
• Specific Elementary Time Unit (ETU) counter for Block Guard Time (BGT): 22 in T = 1 and 16 in T = 0
• Minimum delay between two characters in reception mode:
• in Protocol T = 0:
  12 ETU (TDA8007BHL/C2)
  11.8 ETU (TDA8007BHL/C3)
  
• in Protocol T = 1:
  11 ETU (TDA8007BHL/C2)
  10.8 ETU (TDA8007BHL/C3)
• Supports synchronous cards
• Current limitations in the event of short-circuit (pins I/O1, I/O2, V_CC1 , V_CC2 , RST1 and RST2)
• Special circuitry for killing spikes during power-on/power-off
• Supply supervisor for power-on/power-off reset
• Step-up converter (supply voltage from 2.7 to 6 V), doubler, tripler or follower according to V_CC and V_DD
• Additional input/output pin allowing use of the ISO UART for another analog interface (pin I/OAUX)
• Additional interrupt pin allowing detection of level toggling on an external signal (pin INTAUX)
• Fast and efficient swapping between the three 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 side: 6 kV (min.)
• Software library for easy integration within the application
• Power-down mode for reducing current consumption when no activity.

Products/packages

Products in the above table are all in production. Some variants are discontinued; click here for information on these variants.

Pricing/ordering/availability

Applications

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

Related applications
Mid-range integrated DTV (TV810)

Block diagrams/pinning

Design support

Application Notes

AN00027_1; Serial PC/SC dual smart card reader using TDA8007B and P8XC51RD+ mask 04 (01-Apr-00)

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