DS8007A Datasheet, PDF (1/41 Pages) Maxim Integrated Products – Multiprotocol Dual Smart Card Interface

Rev 0; 4/08
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Multiprotocol Dual Smart Card Interface
General Description
The DS8007A multiprotocol dual smart card interface is
an automotive grade, low-cost, dual smart card reader
interface supporting all ISO 7816, EMV™, and GSM11-
11 requirements. Through its 8-bit parallel bus and dedi-
cated address selects (AD3–AD0), the DS8007A 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 UART is multiplexed among the inter-
faces to allow high-speed automatic smart card pro-
cessing with each card-possessing, independent,
variable, baud-rate capability. The card interface is con-
trolled by internal sequencers that support automatic
activation and deactivation sequencing, handling all
actions required for T = 0, T = 1, and synchronous pro-
tocols. 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 option-
ally be used as additional serial interface for the UART.
The DS8007A provides all electrical signals necessary
to interface with two smart cards. The integrated volt-
age 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. The standard DS8007 revision is available for
nonautomotive applications.
Applications
Banking Applications (Point-of-Sale Terminals,
Debit/Credit Payment Terminals, PIN Pads,
Automated Teller Machines)
Telecommunications
Pay Television
Access Control
Ordering Information
PART
TEMP RANGE
SMART
CARDS
SUPPORTED
PIN-
PACKAGE
DS8007A-EAG+ -40°C to +125°C 2 + auxiliary 48 LQFP
+Denotes a lead(Pb)-free/RoHS-compliant device.
Features
♦ 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 Three-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
♦ 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)
Pin Configuration
+
RSTOUT 1
I/OAUX 2
I/OA 3
C8A 4
PRESA 5
C4A 6
GNDA 7
CLKA 8
VCCA 9
RSTA 10
I/OB 11
C8B 12
DS8007A
36 RD
35 D7
34 D6
33 D5
32 D4
31 D3
30 D2
29 D1
28 D0
27 VDD
26 CPA2
25 AGND
EMV is a trademark owned by EMVCo LLC.
LQFP
Typical Operating Circuit appears at end of data sheet.
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be
simultaneously available through various sales channels. For information about device errata, go to: www.maxim-ic.com/errata.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.