December 2005

1/8

AN2271

APPLICATION NOTE

Ekey-Udisk solution

Introduction

This document describes a firmware implementation for an Ekey-Udisk device based on

ST72651.

The software is divided into 3 parts:

●

USB management: the main USB operations are managed by a USB library with USB

hardware, which is not the focus in this documentation. For further information on this

subject, please refer to the ST7 USB software library documentation.

●

NAND Flash interface: this part software is migrated from PFD solution. How to

implement it is not mentioned in this documentation.

●

Smart Card interface: this interface is implemented by timer and accords ISO7816-1,

2, 3.

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