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Low Cost Analog Smart Card Interface Chip From STMicroelectronics

Friday 5 March 2004 17:27 CET | News

STMicroelectronics has introduced a complete low-cost analog interface chip for asynchronous 3Vand 5V smart cards. It is designed for use in set-top boxes and IC card readers for banking and identification.

The ST8004 meets the ISO 7816-3 standard and is compatible with the NDS conditional access system. It performs all supply protection and control functions when placed between a smart card and a microcontroller. The interface includes a supply supervisor to control transients, enhanced ESD protection on the card side and both thermal and short-circuit protections on all card contacts. The part has three specific protected half-duplex bi-directional buffered I/O lines. It includes automatic activation and deactivation sequences. It also includes a 26MHz crystal oscillator to allow the interface to generate clocks for the card of up to 20MHz, with synchronous frequency changes. The ST8004 runs off a 3 or 5V supply and has a step-up converter for V(CC) generation. The part also offers under-voltage lockout protection, at 3 or 2.2V. It is available in SO-28 and TSSOP28 packages.


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Keywords: ,
Categories: Payments & Commerce | Cards
Countries: World
This article is part of category

Payments & Commerce