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)

Refer to the full data sheet for this information.

1-Wire Master Reset, e.g., After Power-Up

AD,0

60h

1WMR

Sr AD,0

60h

1WRS

The 1-Wire Master Reset must be followed by a 1-Wire Reset Pulse command.

1-Wire Reset Pulse, e.g., to Begin or End 1-Wire Communication

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

AD,0

60h

1WRS

(Idle)

S AD,1 A <byte> A\ P

In the first cycle, the master sends the command; then the master waits (Idle) for the 1-Wire Reset to complete.

In the second cycle the DS2465 is accessed to read the result of the 1-Wire Reset from the 1-Wire Master Status

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

AD,0

60h

1WRS

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

Repeat until the 1WB bit has changed to 0.

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

AD,0

60h

1WRS A\

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

1-Wire Single Bit, e.g., to Generate a Single Time Slot on the 1-Wire Line

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

AD,0

60h

1WSB

<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 single-bit command.

Maxim Integrated

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