Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - customised TSSOP 28

General Description

The DS8113 smart card interface is a low-cost, analog

front-end for a smart card reader, designed for all ISO

7816, EMV™, and GSM11-11 applications. The DS8113

supports 5V, 3V, and 1.8V smart cards. The DS8113

provides options for low active- and stop-mode power

consumption, with as little as 10nA stop-mode current.

The DS8113 is designed to interface between a system

microcontroller and the smart card interface, providing

all power supply, ESD protection, and level shifting

required for IC card applications.

An EMV Level 1 library (written for the MAXQ2000

microcontroller) and hardware reference design is

available. Contact Maxim technical support at

https://support.maxim-ic.com/micro

regarding

requirements for other microcontroller platforms. An

evaluation kit, DS8113-KIT, is available to aid in proto-

typing and evaluation.

Applications

Consumer Set-Top Boxes

Access Control

Banking Applications

POS Terminals

Debit/Credit Payment Terminals

PIN Pads

Automated Teller Machines

Telecommunications

Pay/Premium Television

Features

♦ Analog Interface and Level Shifting for IC Card

Communication

♦ 8kV (min) ESD (IEC) Protection on Card Interface

♦ Ultra-Low Stop-Mode Current, Less Than 10nA

Typical

♦ Internal IC Card Supply-Voltage Generation:

5.0V ±5%, 80mA (max)

3.0V ±8%, 65mA (max)

1.8V ±10%, 30mA (max)

♦ Automatic Card Activation and Deactivation

Controlled by Dedicated Internal Sequencer

♦ I/O Lines from Host Directly Level Shifted for

Smart Card Communication

♦ Flexible Card Clock Generation, Supporting

External Crystal Frequency Divided by 1, 2, 4, or 8

♦ High-Current, Short-Circuit and High-Temperature

Protection

♦ Low Active-Mode Current

DS8113

Smart Card Interface

________________________________________________________________

Maxim Integrated Products

Ordering Information

19-5216; Rev 3; 4/10

Note: Contact the factory for availability of other variants and

package options.

Denotes a lead(Pb)-free/RoHS-compliant package.

EMV is a trademark owned by EMVCo LLC.

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.

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

PART TEMP RANGE PIN-PACKAGE

DS8113-RNG+ -40°C to +85°C 28 SO

DS8113-JNG+ -40°C to +85°C 28 TSSOP

Selector Guide appears at end of data sheet.

PGND

AUX2IN

AUX1IN

I/OIN

XTAL2

TOP VIEW

DS8113

XTAL1

OFF

GND

21 VDD

20 RSTIN

19 CMDVCC

18 1_8V

17 VCC

16 RST

15 CLK

5V/3V

CLKDIV2

CLKDIV1

CP1

VDDA

VUP

PRES

I/O

AUX2

AUX1

14CGND

CP2

SO/TSSOP

Pin Configuration

EVALUATION KIT

AVAILABLE

Summary of content (17 pages)

PAGE 1
9-5216; Rev 3; 4/10 KIT ATION EVALU E L B A IL AVA Smart Card Interface The DS8113 smart card interface is a low-cost, analog front-end for a smart card reader, designed for all ISO 7816, EMV™, and GSM11-11 applications. The DS8113 supports 5V, 3V, and 1.8V smart cards. The DS8113 provides options for low active- and stop-mode power consumption, with as little as 10nA stop-mode current.
PAGE 2
DS8113 Smart Card Interface ABSOLUTE MAXIMUM RATINGS Voltage Range on VDD Relative to GND...............-0.5V to +6.5V Voltage Range on VDDA Relative to PGND ..........-0.5V to +6.5V Voltage Range on CP1, CP2, and VUP Relative to PGND...............................................-0.5V to +7.5V Voltage Range on All Other Pins Relative to GND......................................-0.5V to (VDD + 0.5V) Maximum Junction Temperature .....................................
PAGE 3
Smart Card Interface (VDD = +3.3V, VDDA = +5.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0 20 MHz 0 20 MHz Low-level input on XTAL1 -0.3 0.3 x VDD High-level input on XTAL1 0.7 x VDD VDD + 0.3 CLOCK SOURCE Crystal Frequency f XTAL External crystal f XTAL1 XTAL1 Operating Conditions VIL_XTAL1 VIH_XTAL1 External Capacitance for Crystal Internal Oscillator CXTAL1, CXTAL2 15 V pF f INT 2.
PAGE 4
DS8113 Smart Card Interface RECOMMENDED DC OPERATING CONDITIONS (continued) (VDD = +3.3V, VDDA = +5.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER Output Low Voltage SYMBOL VCC2 Card-Active Mode CONDITIONS MIN TYP MAX 65mA < ICC(5V) < 80mA 4.55 5.00 5.25 ICC(5V) < 65mA 4.75 5.00 5.25 ICC(3V) < 65mA 2.78 3.00 3.22 ICC(1.8V) < 30mA 1.65 1.80 1.95 5V card; current pulses of 40nC with I < 200mA, t < 400ns, f < 20MHz 4.6 5.
PAGE 5
Smart Card Interface (VDD = +3.3V, VDDA = +5.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0 0.3 V No Load 0.9 x VDD VDD + 0.1 I OH < -40μA 0.75 x VDD VDD + 0.1 I/OIN, AUX1IN, AUX2IN PINS Output Low Voltage VOL Output High Voltage I OL = 1mA VOH Output Rise/Fall Time t OT Input Low Voltage VIL Input High Voltage VIH CL = 30pF, 10% to 90% V 0.1 μs -0.3 0.3 x VDD V 0.7 x VDD VDD + 0.
PAGE 6
DS8113 Smart Card Interface RECOMMENDED DC OPERATING CONDITIONS (continued) (VDD = +3.3V, VDDA = +5.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 220 μs 100 μs TIMING Activation Time tACT Deactivation Time CLK to Card Start Time 50 tDEACT 50 Window Start t3 50 130 Window End t5 140 220 tDEBOUNCE 5 PRES/PRES Debounce Time 80 8 11 μs ms Operation guaranteed at -40°C and +85°C but not tested.
PAGE 7
Smart Card Interface PIN NAME 1, 2 CLKDIV1, CLKDIV2 FUNCTION 3 5V/3V 5V/3V Selection Pin. Allows selection of 5V or 3V for communication with an IC card. Logic-high selects 5V operation; logic-low selects 3V operation. The 1_8V pin overrides the setting on this pin if active. See Table 3 for a complete description of choosing card voltages. 4 PGND Analog Ground 5, 7 CP2, CP1 6 VDDA 8 VUP Charge Pump Output. Unused for the DS8113. 9 PRES Card Presence Indicator.
PAGE 8
DS8113 Smart Card Interface Detailed Description The DS8113 is an analog front-end for communicating with 1.8V, 3V, and 5V smart cards. It is a dual inputvoltage device, requiring one supply to match that of a host microcontroller and a separate +5V supply for generating correct smart card supply voltages. The DS8113 translates all communication lines to the correct voltage level and provides power for smart card operation.
PAGE 9
Smart Card Interface I/O Transceivers The card clock signal (CLK) is derived from a clock signal input to XTAL1 or from a crystal operating at up to 20MHz connected between XTAL1 and XTAL2. The output clock frequency of CLK is selectable through inputs CLKDIV1 and CLKDIV2. The CLK signal frequency can be fXTAL, fXTAL/2, fXTAL/4, or fXTAL/8. See Table 1 for the frequency generated on the CLK signal given the inputs to CLKDIV1 and CLKDIV2.
PAGE 10
DS8113 Smart Card Interface If the card is in the reader (if PRES is active), the host microcontroller can begin an activation sequence (start a card session) by pulling CMDVCC low. The following events form an activation sequence (Figure 3): 1) CMDVCC is pulled low. 2) The internal oscillator changes to high frequency (t0). 3) The voltage generator is started (between t0 and t1). 4) VCC rises from 0 to 5V, 3V, or 1.8V with a controlled slope (t2 = t1 + 1.5 × T).
PAGE 11
Smart Card Interface DS8113 CMDVCC VCC ATR I/O CLK 200ns RSTIN RST I/OIN t0 t1 t2 t3 t4 t5 = tACT Figure 4. Activation Sequence at t3 CMDVCC RST CLK I/O VCC t10 t12 t13 t14 t15 tDE Figure 5.
PAGE 12
DS8113 Smart Card Interface Deactivation Sequence When a session is completed, the host microcontroller sets the CMDVCC line high to execute an automatic deactivation sequence and returns the card interface to the inactive mode (Figure 5). 1) RST goes low (t10). 2) CLK is held low (t12 = t10 + 0.5 × T) where T is 64 times the period of the internal oscillator (approximately 25µs). 3) I/O, AUX1, and AUX2 are pulled low (t13 = t10 + T). 4) VCC starts to fall (t14 = t10 + 1.5 × T).
PAGE 13
Smart Card Interface DS8113 PRES OFF CMDVCC DEBOUNCE DEBOUNCE VCC DEACTIVATION CAUSED BY CARDS WITHDRAWAL DEACTIVATION CAUSED BY SHORT CIRCUIT Figure 6. Behavior of PRES, OFF, CMDVCC, and VCC OFF PRES RST CLK I/O VCC t10 t12 t13 t14 t15 tDE Figure 7.
PAGE 14
DS8113 Smart Card Interface Stop Mode (Low-Power Mode) A low-power state, stop mode, can be entered by forcing the CMDVCC, 5V/3V, and 1_8V input pins to a logic-high state. Stop mode can only be entered when the smart card interface is inactive. In stop mode all internal analog circuits are disabled. The OFF pin follows the status of the PRES pin. To exit stop mode, change the state of one or more of the three control pins to a logic-low.
PAGE 15
Smart Card Interface logic-low state. Care must be exercised when switching from one VCC power selection to the other. If both 1_8V and 5V/3V are high with CMDVCC high at the same time, the DS8113 enters stop mode. To avoid accidental entry into stop mode, the state of 1_8V and 5V/3V must not be changed simultaneously. A minimum delay of 100ns should be observed between changing the states of 1_8V and 5V/3V. See Figure 9 for the recommended sequence of changing the VCC range.
PAGE 16
DS8113 Smart Card Interface Applications Information Performance can be affected by the layout of the application. For example, an additional cross-capacitance of 1pF between card reader contacts C2 (RST) and C3 (CLK) or C2 (RST) and C7 (I/O) can cause contact C2 to be polluted with high-frequency noise from C3 (or C7). In this case, include a 100pF capacitor between contacts C2 and CGND.
PAGE 17
Smart Card Interface REVISION NUMBER REVISION DATE 0 1/08 Initial release — 2/08 In the Recommended DC Operating Conditions table, changed I/OIN, AUX1IN/AUX2IN specs to reference VDD rather than VCC and corrected IOH to μA. 5 1 In the Pin Description, removed references to active low from the PRES description. 7 DESCRIPTION PAGES CHANGED 2 5/08 In the Recommended DC Operating Conditions table, clarified specifications of VTH2, f INT, VCCSR, and IIL_IO.