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MCUs from ST targets secure banking & ID apps

06 Nov 2012  | Stephen Evanczuk

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The ST31, a chip-card series of 90nm MCUs based on the ARM SecurCore SC000 32bit processor, has just been unveiled by STMicroelectronics recently. The MCUs are designed to support MIFARE, MIFARE DESFire and Calypso transport-card standards that are supported by both contactless and contact applications. The devices feature hardware crypto accelerators including NESCRYPT, AES and 3-key Triple DES, which make them suitable for banking and secure ID applications.

The ST31 dual-interface MCUs offer up to 320KB of ROM, 8KB RAM, and 52KB EEPROM and feature a low-power architecture designed for contactless applications that draw power from the reader's RF energy.

For contactless applications, the family offers the following features:

* Complies with ISO/IEC 14443 Type A, Band B', and PayPass standards

* 13.56MHz carrier frequency

* RFUART (RF universal asynchronous receiver transmitter) up to 848Kbit/s

* Very High Bit Rate (VHBR) up to 3.4 Mbit/s

* Simultaneous mode (Contact and contactless)

* 4-KB RF frame buffer in dedicated RFUART RAM

* MIFARE Plus and MIFARE DESFire EV1 HW and SW implementation

* MIFARE Classic available as part of MIFARE Plus

The ST31 series is available now in sample quantities.

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