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Document Reference No.: FT_000062
USB-Key Datasheet Version 1.00
Clearance No.: FTDI# 41
1
Introduction
1.1 Overview
The FTDI USB Key is security device which has a unique identification number burnt into it
during manufacture. This is the FTDIChip-ID? number.
This FTDIChip-ID? number is only readable over the USB interface making it an ideal “key” for
“unlocking” particular applications.
1.2 Features and Applications
The FTDI USB Key has the following features:
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?
?
?
?
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Simple to use USB interface to any USB host or hub.
Unique FTDIChip-ID? number can be used to provide a security dongle for software
applications.
Additional security possible by encrypting the FTDIChip-ID? number and storing in EEPROM
writeable area of FTDI USB Key.
Enhanced security protection using SafeGuard-IT Active-X control for Windows. This can be used
to generate asymmetric public-private key encryption to provide secure dongle functionality.
USB Key can be used to unlock security systems – access control.
Password protected access.
1.3 USB Key Connections
The USB Key connects to PC USB interface. The following Table 1.1 describe the function of the
connector:
Pin Number
1
2
3
4
5
Name
VBUS
D-
D+
GND
GND
Type
Power Input
Input
Input
Power Input
Power Input
Description
+5V from USB bus
Data Minus
Data Plus
0V
0V
Table 1.1 USB Connector Signal Description
Copyright ? Future Technology Devices International Limited
2
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