SMARTCARD INTERFACE
ST8004
Smartcard interface
General features
■ 3V or 5V supply for the IC ■ Step-up converter for VCC generation ■ 3 sp...
Description
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
1/26
www.st.com
26
Contents
Contents
ST8004
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Electrical characteristics . . . . . ...
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