Rev 1; 10/07
KIT
ATION
EVALU
BLE
AVAILA
Multiprotocol Dual Smart Card Interface
General Description
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/Dallas secure microcontroller. Optionally, the
parallel bus can be multiplexed to allow direct access
to the multiplexed bus of an 80C51-compatible micro-
controller 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 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.
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 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
♦
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)
Typical Operating Circuit appears at end of data sheet.
DS8007
Applications
Banking Applications (Point-of-Sale Terminals,
Debit/Credit Payment Terminals, PIN Pads,
Automated Teller Machines)
Telecommunications
Pay Television
Access Control
Pin Configuration
41
INTAUX
48
DELAY
47
XTAL1
46
XTAL2
45
AD0
44
AD1
43
AD2
42
AD3
39
ALE
40
INT
37
WR
36
RD
35
D7
34
D6
33
D5
32
D4
31
D3
30
D2
29
D1
28
D0
27
V
DD
26
CPA2
25
AGND
13
14
15
16
17
18
19
20
21
22
23
24
38
CS
Ordering Information
PART
DS8007-ENG
TEMP RANGE
-40°C to +85°C
SMART
PIN-
CARDS
PACKAGE
SUPPORTED
2 + auxiliary
2 + auxiliary
48 LQFP
48 LQFP
RSTOUT
1
I/OAUX
I/OA
C8A
PRESA
C4A
GNDA
2
3
4
5
6
7
DS8007
DS8007-ENG+ -40°C to +85°C
+
Denotes a lead-free/RoHS-compliant device.
CLKA
8
V
CCA
9
RSTA
10
I/OB
11
C8B
12
PRESB
C4B
GNDB
CLKB
V
CCB
RSTB
GND
V
UP
CPA1
CPB1
V
DDA
CPB2
EMV is a trademark owned by EMVCo LLC.
MAXQ is a registered trademark of Maxim Integrated Products, Inc.
Note:
Some revisions of this device may incorporate devia-
tions 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.
LQFP
1
______________________________________________
Maxim Integrated Products
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.
DALLAS [ DALLAS SEMICONDUCTOR ]
