美芯DS8007智能卡接口评估方案

美芯(Maxim)公司的DS8007是低成本多协议双智能卡接口器件,支持所有的ISO 7816, EMV™和GSM11-11规范.广泛用在银行终端入POS,ATM,PIN卡,通信,付费电视和接入控制等.本文介绍了DS8007的主要特性,方框图,典型应用电路以及DS8007开发评估板的材料清单(BOM)和详细电路图.

The DS8007 multiprotocol dual smart card interface is a low-cost, dual smart card reader interface supporting all ISO 7816, EMV™, and GSM11-11 requirements.

Through its 8-bit parallel bus and dedicated address selects (AD3–AD0), the DS8007 can easily and directly connect to the nonmultiplexed byte-wide bus of a Maxim secure microcontroller. Optionally, the parallel bus can be multiplexed to allow direct access to the multiplexed bus of an 80C51-compatible microcontroller through MOVX memory addressing.

One integrated ISO 7816 UART is multiplexed among the interfaces to allow high-speed automatic smart card processing with each card-possessing, independent, variable, baud-rate capability. The card interface is controlled by internal sequencers that support automatic activation and deactivation sequencing, handling all actions required for T = 0, T = 1, and synchronous protocols.

Emergency deactivation is also supported in case of supply dropout. A third card is supported through the auxiliary I/O. The same set of I/O can optionally be used as additional serial interface for the UART.

The DS8007 provides all electrical signals necessary to interface with two smart cards. The integrated voltage converter ensures full cross-compatibility between 1.8V/ 3V/5V cards and a 1.8V/3V/5V environment, and allows operation within a 2.7V to 6V supply voltage range.

DS8007主要特性:
Integrated ISO 7816 UART Provides Complete Interface/Control for Two Separate Smart Card Devices
8kV (min) ESD Protection on Card Interfaces
Internal IC Card Supply Voltage Generation
5.0V ±5%, 65mA (max)
3.0V ±8%, 50mA (max)
1.8V ±10%, 30mA (max)
Automatic Card Activation, Deactivation, and Data Communication Controlled by Dedicated Internal Sequencer
Host Interface Through an 8-Bit Parallel Bus (User- Selectable Multiplexed or Nonmultiplexed Modes)
Chip Select and Tri-State Bus Allow Multiple Devices (Card Readers and Memories) on Bus
8-Character Receive FIFO with Optional Programmable Depth/Threshold
I/O Interface Pin to External ISO 7816 UART for Auxiliary Interface
Separate Card Clock Generation (Up to 10MHz) with 2x Frequency Doubling
Selectable Card Clock Stop High, Stop Low, or Internally Generated 1.25MHz (for Card Power-Down)
EMV-Certified Reference Design and Evaluation Kit Available (DS8007-KIT)

应用:
Banking Applications (Point-of-Sale Terminals, Debit/Credit Payment Terminals, PIN Pads, Automated Teller Machines)
Telecommunications
Pay Television
Access Control



图1.DS8007方框图



图2.DS8007典型工作电路

Maxim DS8007 Smart Card Interface Chip Evaluation Kit
The DS8007 evaluation kit (EV kit) is a proven platform to conveniently evaluate the capabilities of the DS8007 smart card interface chip. It includes a DS5002FP secure microcontroller to control the smart card interface. Two card sockets are included (one full size, one SIM size) to communicate with any 1.8V, 3V, or 5V IC card. An LCD screen can provide detailed feedback on program operation and aids in debugging applications.



图3.DS8007评估板外形图
Key Features:
Easily Develop Smart Card Applications Using EMV Certified Library and 8051 Microcontroller
2-Line LCD Screen for User Interface
Two Card Sockets for Interfacing with Standard Chip Cards
Card and Microcontroller Interface Pins Brought Out to Headers for I/O Expansion or Debugging
Pushbuttons for Reset, Interrupt, and Self-Destruct Functions
Level-Shifted RS-232 Interface
Board Schematics
Kit Includes:
DS8007 Interface Board
Power Supply
Serial Cable
Keil µVision3 Trial Version (Compiler/Assembler, 4kB Codelimited Trial Version) Application Notes
Datasheet/Users Guide Sample Code



图4. DS8007评估板电路图(1)



图5. DS8007评估板电路图(2)
材料清单(BOM):