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Partno	Mfg	Dc	Qty	Available	Descript
ST8004CD	STM	N/a	105	avai	SMARTCARD INTERFACE
ST8004CDR	ST	N/a	40000	avai	SMARTCARD INTERFACE

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ST8004CD-ST8004CDR
SMARTCARD INTERFACE
1/19March 2004 3OR5 VSUPPLYFOR THEIC STEP-UP CONVERTER FOR VCC
GENERATION 3 SPECIFIC PROTECTED HALF DUPLEX
BI-DIRECTIONAL BUFFEREDI/O LINES AUTOMATIC ACTIVATION AND
DEACTIVATION SEQUENCES THERMAL AND SHORT-CIRCUIT
PROTECTIONSON ALL CARD CONTACTS 26 MHz INTEGRATED CRYSTAL
OSCILLATOR CLOCK GENERATION FOR THE CARDUP 20MHz WITH SYNCHRONOUS
FREQUENCY CHANGES ISO7816-3 COMPATIBLE ENHANCED ESD PROTECTIONON CARD
SIDE SO-28 PACKAGE UNDER VOLTAGE LOCKOUT PROTECTION
SELECTABLETO3VOR 2.2V SUPPLY SUPERVISOR INTEGRATED
DESCRIPTION
The ST8004isa complete low cost analog
interfacefor asynchronous 3V and 5V smart
cards.It canbe placed betweenthe card andthe
microcontroller with few external componentsto
perform all supply protection and control
functions. Main applications are: smartcard
readersfor Set Top Box,IC card readersfor
banking, identification.
ORDERING CODES
ST8004
SMARTCARD INTERFACE
ST8004
2/19
BLOCK DIAGRAM
ST8004
3/19
PIN CONFIGURATION
PIN DESCRIPTION
ST8004
4/19
ABSOLUTE MAXIMUM RATINGS
AbsoluteMaximum Ratingsare those values beyond which damagetothe device mayoccur.Functional operation under these conditionsis
not implied.
Note1:Allcard contactsare protected againstany shortwithany othercard contact.
Note2: Method3015 (HBM,1500Ω,100pF)3 positive pulsesand3 negative pulsesoneachpin referencedto ground.
THERMAL DATA
RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING(VDD =3.3V,VDDP =5V,
fXTAL= 10MHz, unless otherwise noted. Typical valuesaretoTa =25°C)
ST8004
5/19
CARD SUPPLY VOLTAGE CHARACTERISTICS(VDD =3.3V,VDDP =5V,f XTAL= 10MHz,
unless otherwise noted. Typical valuesaretoTa= 25°C) (Note1)
CRYSTAL CONNECTION (PINS XTAL1 AND XTAL2) (VDD =3.3V, VDDP =5V, fXTAL= 10MHz,
unless otherwise noted. Typical valuesaretoTa =25°C)
DATA LINES (PINSI/O, AUX1, AUX2, AUX1UC AND AUX2UC)(VDD =3.3V,VDDP =5V,f XTAL =10MHz,
unless otherwise noted. Typical valuesaretoTa =25°C)
ST8004
6/19
DATA LINES (PINS I/O, AUX1 AND AUX2 WITH10kΩ PULL-UP RESISTOR CONNECTEDTOVCC
INTERNALLY (VDD =3.3V, VDDP =5V, fXTAL= 10MHz, unless otherwise noted. Typical valuesaretoa= 25°C)
DATA LINES (PINS I/OUC, AUX1UC AND AUX2UC WITH10kΩ PULL-UP RESISTOR CONNECTED VDD INTERNALLY (VDD =3.3V, VDDP =5V, fXTAL= 10MHz, unless otherwise noted.
Typical valuesaretoTa =25°C)
ST8004
7/19
INTERNAL OSCILLATOR(VDD =3.3V,VDDP =5V,f XTAL= 10MHz, unless otherwise noted.
Typical valuesaretoTa =25°C)
RESET OUTPUTTO THE CARD (PIN RST)(VDD =3.3V,VDDP =5V,f XTAL= 10MHz, unless otherwise
noted. Typical valuesaretoTa= 25°C)
CLOCK OUTPUTTO THE CARD (PIN CLK) (VDD =3.3V, VDDP =5V, fXTAL= 10MHz, unless otherwise
noted. Typical valuesaretoTa= 25°C)
LOGIC INPUTS (PINS CLKDIV1, CLKDIV2, PRES, PRES,CMDVCC, RSTIN AND 5V/3V, VTHSEL
(VDD =3.3V, VDDP =5V, fXTAL= 10MHz, unless otherwise noted. Typical valuesaretoa= 25°C) (Note3)
ST8004
8/19
OFF OUTPUTS (PIN OFFISAN OPEN DRAIN WITHAN INTERNAL20kΩ PULL-UP RESISTORTO
VDD); (see note5) (VDD =3.3V, VDDP =5V, fXTAL= 10MHz, unless otherwise noted. Typical valuesaretoa= 25°C)
PROTECTION (VDD =3.3V, VDDP =5V, fXTAL= 10MHz, unless otherwise noted. Typical valuesaretoa= 25°C)
TIMING(VDD =3.3V,VDDP =5V,f XTAL= 10MHz, unless otherwise noted. Typical valuesaretoTa =25°C)
Note1:To meet these specificationsVCC shouldbe decoupledto CGND usingtwo ceramic multiplier capacitorsoflowESRwith valuesof
100nF.
Note2: Thetransitiontimeandduty cyclefactorare showninfigure7;d =t1/(t1+t2).
Note3: PRESand CMDVCCare activeLow; RSTINand PRESare activeHigh
Note4: Referredtothe paragraph "CLOCK CIRCUITRY"
Note5:See paragraph "FAULT DETECTION".
Figure1: Alarmasa functionofVDD(tW =10 ms),V THSEL=VDDor floating
ST8004
9/19
Figure2: Alarmasa functionofVDD(tW =10 ms),V THSEL =GND
Figure3: Activation sequence
ST8004
10/19
Figure4: Deactivation sequence
Figure5: Behaviorof OFF,CMDVCC, PRES and VCC

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