DS1425中文资料Dallas数据手册PDF规格书

DESCRIPTION

Authorization iButtons are sophisticated microelectronics, sealed into miniature stainless steel cans, creating a low cost, portable medium for storing and controlling access to sensitive information.

iButtons are used with port adapters as a hardware based protection system for software. iButtons help protect the right to copy software by actually protecting the right to execute it. Software can now be locked to a user, a machine, or an application with a complete audittrail and guaranteed uniqueness.

The DS1425 provides a 64–bit unique ID number, and three 384 bit fields of password protected RAM. The DS1425 is used to provide nested levels of protection, or to protect multiple applications.

FEATURES

• Provides a unique 64–bit serial number and three 384 bit fields of password protected RAM

• Intelligent response generator included

• No external power required

• Uses inexpensive 1–WireTM protocol

• Universally portable across platforms