Datasheet > DS2465

DS2465

更新时间： 2023-12-20 18:46:09

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
30页	1892K
描述
DeepCover安全认证器具有SHA-256协处理器和1-Wire主机功能

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DS2465 数据手册

ABRIDGED DATA SHEET

DS2465

DeepCover Secure Authenticator with

SHA-256 Coprocessor and 1-Wire Master Function

I C Communication Examples (continued)

Case B: 1-Wire Idle (1WB = 0), Busy Polling Until the 1-Wire Command is Completed

Repeat until the

1WB bit has

AD,0

60h

1WRB

changed to 0.

Sr AD,1 A <byte> A <byte> A\

Sr AD,0

A 62h A Sr AD,1 A <byte> A\ P

Poll the Status register until the 1WB bit has changed from 1 to 0. Then set the read address to the 1-Wire Read

Data register and access the device again to read the data byte that was obtained from the 1-Wire line.

Case C: 1-Wire Busy (1WB = 1)

AD,0

60h

1WRB A\ P

The master should stop and restart as soon as the DS2465 does not acknowledge the command code.

1-Wire Triplet, e.g., to Perform a Search ROM Function on the 1-Wire Line

Case A: 1-Wire Idle (1WB = 0), No Busy Polling

AD,0

60h

1WT

<byte>

(Idle)

AD,1 A <byte> A\ P

The idle time is needed for the 1-Wire function to complete. Then access the device in read mode to get the result

from the 1-Wire Triplet command.

Case B: 1-Wire Idle (1WB = 0), Busy Polling Until the 1-Wire Command is Completed

Repeat until the

1WB bit has

AD,0 A 60h A 1WT A <byte> A

changed to 0.

Sr AD,1 A <byte> A <byte> A\

When 1WB has changed from 1 to 0, the 1-Wire Master Status register holds the valid result of the 1-Wire Triplet

command.

Case C: 1-Wire Busy (1WB = 1)

AD,0 A 60h A 1WT A\ P

The master should stop and restart as soon as the DS2465 does not acknowledge the command code.

Maxim Integrated

1...26 27 282930

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