Information as of 2000-01-10
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TDA8007B; Multiprotocol smart card interface

• Description • Features • Applications • Datasheet • Find similar products

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Description

The TDA8007B is a low cost card interface for dual smart card readers. Controlled through a parallel bus, it takes care of all ISO 7816, EMV and GSM11-11 requirements. It may be interfaced to the P0/P2 ports of an 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 register addresses AD0, AD1, AD2 and AD3. The integrated ISO UART and the timeout counters allow easy use, even at high baud rates with no real time constraints. Due to its chip select and external I/O and INT features, it greatly simplifies the realization of any number of types of card readers. It gives the cards and the mode a very high level of security, due to its special hardware against ESD, short circuits, power failure, etc. Its integrated step-up converter allows operation within a supply voltage range of 2.5 to 6 V.

Features

• 8-bit parallel interface for control and communication, compatible with multiplexed or non-multiplexed memory access
• Specific ISO UART with parallel access on I/O for automatic convention processing, variable baud rate through frequency or division ratio programming, error management at character level for T = 0, extra guard time register
• 1 to 8 characters FIFO in reception mode
• Parity error counter in reception mode
• Dual V_CC generation (5 V ±5% or 3 V ±5%, 65 mA (max.) with controlled rise and fall times)
• Dual smart card clock generation (up to 10 MHz), with two times synchronous frequency doubling
• Cards clock STOP HIGH, clock STOP LOW or 1.25 MHz (from internal oscillator) for cards power-down mode
• Automatic activation and deactivation sequence through an independent sequencer
• Supports asynchronous protocols T = 0 and T = 1, in accordance with ISO 7816 and EMV
• Versatile 24-bit timeout counter for ATR (Answer To Reset) and waiting times processing
• 22 ETU counter for Block Guard Time
• Supports synchronous cards
• Short-circuit current limitations
• Special circuit for killing spikes during power-on/-off
• Supply supervisor for power-on/-off reset
• Step-up converter (supply voltage from 2.5 to 6 V), doubler, tripler or follower according to V_CC and V_DD
• Additional I/O pin, allowing use of the ISO UART for another analog interface (I/OAUX)
• Additional interrupt pin, allowing detection of level toggling on an external signal (INTAUX)
• Fast and efficient swapping between card 1, card 2 and a third card whose I/O is tied to IOAUX, 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, reducing current consumption during periods of non-activity.

Applications

• Multiple smart card readers for multiprotocol applications (EMV banking, Digital pay TV, Access control etc.).

Datasheet

Type nr.	Title	Publication release date	Datasheet status	Page count	File size (kB)	Datasheet
TDA8007B	Multiprotocol smart card interface	11-Nov-99	Objective Specification	12	166	Open

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