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PDF ST8004 Data sheet ( Hoja de datos )
| Número de pieza | ST8004 | |
| Descripción | SMARTCARD INTERFACE | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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ST8004
Smartcard interface
General features
■ 3V or 5V supply for the IC
■ Step-up converter for VCC generation
■ 3 specific protected half duplex bi-directional
buffered I/O lines
■ Automatic activation and deactivation
sequences
■ Thermal and short-circuit protections on all
card contacts
■ 26MHz integrated crystal oscillator
■ Clock generation for the card up to 20MHz with
synchronous frequency changes
■ ISO7816-3 compatible
■ Enhanced ESD protection on card side
■ SO-28 package
■ Under voltage lockout protection selectable to
3V or 2.2V
■ Supply supervisor integrated
SO-28
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.
Order code
Part number
ST8004CDR
Temperature range
0 to 85 °C
January 2007
Package
SO-28 (Tape & Reel)
Rev 7
Packaging
1000 parts per reel
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ST8004
Pin configuration
Table 1.
Pin N°
20
21
22
23
24
25
26
27
28
Pin description
Symbol
Name and function
RSTIN
VDD
GND
OFF
XTAL1
XTAL2
I/OUC
AUX1UC
AUX2UC
Card Reset Input from MCU
Supply Voltage
Ground
Interrupt to MCU (active Low)
Crystal or external clock input
Crystal connection (leave this pin open if external clock is used)
Data Line to and from MCU (internal 10kΩ pull-up resistor connected to VDD)
Auxiliary line to and from MCU (internal 10kΩ pull-up resistor connected to VDD)
Auxiliary line to and from MCU (internal 10kΩ pull-up resistor connected to VDD)
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ST8004
Electrical characteristics
Table 14.
Symbol
Logic inputs (pins CLKDIV1, CLKDIV2, PRES, PRES, CMDVCC, RSTIN and 5V/3V,
VTHSEL (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values
are to Ta = 25°C) (Note 3)
Parameter
Test Conditions
Min. Typ. Max. Unit
VIL
VIH
|ILIH|
|ILIL|
Low Level Input Voltage
High Level Input Voltage
Input Leakage Current
when high
Input Leakage Current
when low
VIL = 0 to VDD
VIH = 0 to VDD
0
0.7 VDD
0.3 VDD
VDD
5
V
V
µA
5 µA
Table 15.
Symbol
OFF outputs (pin OFF is an open drain with an internal 20 kΩ Pull-up resistor to VDD);
(see note 5) (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values
are to TA = 25°C)
Parameter
Test Conditions
Min. Typ. Max. Unit
VOL Low Level Output Voltage IOL = 2 mA
VOH High Level Output Voltage IOH = -15 µA
0.75 VDD
0.4 V
V
Table 16.
Symbol
Protection (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values
are to TA = 25°C)
Parameter
Test Conditions
Min. Typ. Max. Unit
TSD Shut down temperature
ICC(SD) Shut down current at VCC
135 °C
150 mA
Table 17.
Symbol
Timing (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values are
to TA = 25°C)
Parameter
Test Conditions
Min. Typ. Max. Unit
tACT Activation sequence duration (See Figure 5.)
tDE Deactivation sequence duration (See Figure 6.)
t3
Start of the windows to send
CLK to card
(See Figure 5.)
t5
End of the windows to send
CLK to card
(See Figure 5.)
180 220
60 80 100
130
140
µs
µs
µs
µs
Note: 1 To meet these specifications VCC should be decoupled to CGND using two ceramic
multiplier capacitors of low ESR with values of 100nF.
2 The transition time and duty cycle factor are shown in Figure 9.; d = t1/(t1+t2).
3 PRES and CMDVCC are active Low; RSTIN and PRES are active High
4 Referred to the paragraph "CLOCK CIRCUITRY"
5 See paragraph "FAULT DETECTION".
11/26
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| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet ST8004.PDF ] | |
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