www.docs.chipfind.ru
1/19
March 2004
s
3 OR 5 V SUPPLY FOR THE IC
s
STEP-UP CONVERTER FOR V
CC
GENERATION
s
3 SPECIFIC PROTECTED HALF DUPLEX
BI-DIRECTIONAL BUFFERED I/O LINES
s
AUTOMATIC ACTIVATION AND
DEACTIVATION SEQUENCES
s
THERMAL AND SHORT-CIRCUIT
PROTECTIONS ON ALL CARD CONTACTS
s
26 MHz INTEGRATED CRYSTAL
OSCILLATOR
s
CLOCK GENERATION FOR THE CARD UP
TO 20MHz WITH SYNCHRONOUS
FREQUENCY CHANGES
s
ISO7816-3 COMPATIBLE
s
ENHANCED ESD PROTECTION ON CARD
SIDE
s
SO-28 PACKAGE
s
UNDER VOLTAGE LOCKOUT PROTECTION
SELECTABLE TO 3V OR 2.2V
s
SUPPLY SUPERVISOR INTEGRATED
DESCRIPTION
The ST8004 is a complete low cost analog
interface for asynchronous 3V and 5V smart
cards. It can be placed between the card and the
microcontroller with few external components to
perform
all
supply
protection
and
control
functions.
Main
applications
are:
smartcard
readers for Set Top Box, IC card readers for
banking, identification.
ORDERING CODES
Type
Temperature
Range
Package
Comments
ST8004CD
0 to 85 C
SO-28 (Tube)
27 parts per tube / 12 tube per box
ST8004CDR
0 to 85 C
SO-28 (Tape & Reel)
1000 parts per reel
ST8004
SMARTCARD INTERFACE
SOP
ST8004
2/19
BLOCK DIAGRAM
ST8004
3/19
PIN CONFIGURATION
PIN DESCRIPTION
PlN N
SYMBOL
NAME AND FUNCTION
1
CLKDIV1
Control of CLK Frequency
2
CLKDIV2
Control of CLK Frequency
3
5V/3V
V
CC
selection pin.
4
PGND
Power Ground for Step-Up converter
5
C1+
External Cap. for Step-Up converter
6
V
DDP
Power Supply for Step-Up converter
7
C1-
External Cap. Step-Up converter
8
V
UP
Output of Step-Up converter
9
PRES
Card Presence Input (Active Low)
10
PRES
Card Presence Input (Active High)
11
I/O
Data Line to and from card (C7) (internal 10k
pull-up resistor connected to V
CC
)
12
AUX2
Auxiliary line to and from card (C8) (internal 10k
pull-up resistor connected to V
CC
)
13
AUX1
Auxiliary line to and from card (C4) (internal 10k
pull-up resistor connected to V
CC
)
14
CGND
Ground for card signal (C5)
15
CLK
Clock to card (C3)
16
RST
Card Reset (C2)
17
V
CC
Supply Voltage for the card (C1)
18
V
THSEL
Deactivation threshold selector pin (under voltage lock-out)
19
CMDV
CC
Start activation sequence input (Active Low)
20
RSTIN
Card Reset Input from MCU
21
V
DD
Supply Voltage
22
GND
Ground
23
OFF
Interrupt to MCU (active Low)
24
XTAL1
Crystal or external clock input
25
XTAL2
Crystal connection (leave this pin open if external clock is used)
26
I/OUC
Data Line to and from MCU (internal 10k
pull-up resistor connected to V
DD
)
27
AUX1UC
Auxiliary line to and from MCU (internal 10k
pull-up resistor connected to V
DD
)
28
AUX2UC
Auxiliary line to and from MCU (internal 10k
pull-up resistor connected to V
DD
)
ST8004
4/19
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
Note 1: All card contacts are protected against any short with any other card contact.
Note 2: Method 3015 (HBM, 1500
, 100 pF) 3 positive pulses and 3 negative pulses on each pin referenced to ground.
THERMAL DATA
RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING (V
DD
= 3.3V, V
DDP
= 5V,
f
XTAL
= 10MHz, unless otherwise noted. Typical values are to T
a
= 25C)
Symbol
Parameter
Min
Max
Unit
V
DD,
V
DDP
Supply Voltage
-0.3
7
V
V
n1
Voltage on pins XTAL1, XTAL2, 5V/3V, RSTIN, AUX2UC,
AUX1UC, I/OUC, CLKDIV1, CLKDIV2, V
THSEL
, CMDV
CC
, PRES,
PRES and OFF
-0.3
V
DD
+ 0.3
V
V
n2
Voltage on card contact pins I/O, RST, AUX1, AUX2 and CLK
-0.3
V
CC
+ 0.3
V
V
n3
Voltage on pins V
UP
, S1 and S2
9
V
ESD1
MIL-STD-883 class 3 on card contact pins, PRES and PRES
(Note 1, 2)
-6
6
KV
ESD2
MIL-STD-883 class 2 on C contact pins and RSTIN (Note 1, 2)
-2
2
KV
Symbol
Parameter
Condition
Value
Unit
R
thj-amb
Thermal Resistance Junction-ambient Temperature
In free air
70
K/W
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
T
A
Temperature Range
-25
85
C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Supply Voltage
V
THSEL
= V
DD
or floating
2.7
6.5
V
V
THSEL
= GND
3.150
6.5
V
DDP
Supply Voltage for the
voltage doubler
4.5
5
6.5
V
To comply with V
I(RIPPLE)(P-P)
specifications
4.75
5.25
V
O(VUP)
Output Voltage on pin V
UP
from step-up converter
5.5
V
V
I(VUP)
Input Voltage to be applied
on VUP in order to block
the step-up converter
7
9
V
I
DD
Supply Current
Inactive mode
1.2
mA
Active mode; f
CLK
= f
XTAL
; C
L
= 30pF
1.5
I
P
Supply Current for Step-Up
converter
Inactive mode
0.1
mA
Active mode; f
CLK
= f
XTAL
;
C
L
= 30pF
I
CC
= 0
18
I
CC
= 65 mA
150
V
th2
Threshold Voltage on V
DD
V
THSEL
= V
DD
or floating
2.2
2.4
V
V
th3
Threshold Voltage on V
DD
V
THSEL
= GND
2.95
3.05
V
V
HYS(th2)
Hysteresis on V
th2
V
THSEL
= V
DD
or floating
50
150
mV
V
HYS(th3)
Hysteresis on V
th3
V
THSEL
= GND
0
mV
t
W
Pulse width of the internal
Alarm pulse
6
20
ms
T
HFIL
Delay of Internal filter
V
THSEL
= GND
5
50
s
ST8004
5/19
CARD SUPPLY VOLTAGE CHARACTERISTICS (V
DD
= 3.3V, V
DDP
= 5V, f
XTAL
= 10MHz,
unless otherwise noted. Typical values are to T
a
= 25C) (Note 1)
CRYSTAL CONNECTION (PINS XTAL1 AND XTAL2) (V
DD
= 3.3V, V
DDP
= 5V, f
XTAL
= 10MHz,
unless otherwise noted. Typical values are to T
a
= 25C)
DATA LINES (PINS I/O, AUX1, AUX2, AUX1UC AND AUX2UC) (V
DD
= 3.3V, V
DDP
= 5V, f
XTAL
= 10MHz,
unless otherwise noted. Typical values are to T
a
= 25C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
CC
Output Voltage including
ripple
Inactive Mode
-0.1
0.1
V
Inactive Mode; I
CC
= 1 mA
-0.1
0.4
Active Mode; V
DDP
= 5V 5%
|I
CC
| < 65 mA DC
5 V card
4.75
5.25
3 V card
2.85
3.15
Active Mode; single current
pulse of 100 mA; 2 s
5 V card
4.65
5.25
3 V card
2.85
3.15
Active Mode; current pulse
of 40 nAs with |I
CC
|<200mA
t < 400 ns
5 V card
4.65
5.25
3 V card
2.76
3.15
V
I(RIPPLE)
(P-P)
Peak to Peak ripple voltage
on V
CC
20 KHz to 200 MHz
V
DDP
= 5V 5%
350
mV
|I
CC
|
Output Current
From 0 to 5V or to 3V
65
mA
V
CC
short circuit to GND
150
S
R
Slew Rate
Up to down
0.11
0.22
V/s
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
C
EXT
External capacitors on pins
XTAIL1, XTAIL2
Depending on specification of crystal or
resonator used
15
pF
f
I(XTAL)
Crystal Input Frequency
2
26
MHz
V
IH(XTAL)
High level input voltage on
XTAIL1
0.7 V
DD
V
DD
V
V
IL(XTAL)
Low level input voltage on
XTAIL1
0
0.3 V
DD
V
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
t
D(EDGE)
Delay between falling edge
on pin I/O and I/OUC and
width of active pull-up pulse
200
ns
f
I/O(MAX)
Maximum frequency of data
lines
1
MHz
C
I
Input capacitance on data
lines
10
pF
PDF 
ZIP