ds2482-101 Maxim Integrated Products, Inc., ds2482-101 Datasheet - Page 19

• Manufacturer Part Number: ds2482-101
• Description: Single-channel 1-wire Master With Sleep Mode
• Manufacturer: Maxim Integrated Products, Inc.

Device Reset (After Power-Up)
Activities that are underlined denote an optional read access to verify the success of the command.
Set Read Pointer (To Read from Another Register)
Case A: Valid Read Pointer Code
C3h is the valid read pointer code for the Configuration Register.
Case B: Invalid Read Pointer Code
E5h is an invalid read pointer code.
Write Configuration (Before Starting 1-Wire Activity)
Case A: 1-Wire Idle (1WB = 0)
Activities that are underlined denote an optional read access to verify the success of the command.
Case B: 1-Wire Busy (1WB = 1)
The master should stop and restart as soon as the DS2482-101 does not acknowledge the command code.
1-Wire Reset (To Begin or End 1-Wire Communication)
Case A: 1-Wire Idle (1WB = 0), No Busy Polling to Read the Result
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 DS2482-101 is accessed to read the result of the 1-Wire reset from the Status Register.
Case B: 1-Wire Idle (1WB = 0), Busy Polling Until the 1-Wire Command is Completed, then Read the Result
Case C: 1-Wire Busy (1WB = 1)
The master should stop and restart as soon as the DS2482-101 does not acknowledge the command code.
Single-Channel 1-Wire Master with Sleep Mode
S
S
S
S
S
S
S
S
AD,0
AD,0
AD,0
AD,0
AD,0
AD,0
AD,0
AD,0
______________________________________________________________________________________
A
A
A
A
A
A
A
A
WCFG
WCFG
1WRS
1WRS
1WRS
DRST
SRP
SRP
A\
A\
A
A
A
A
A
A
<byte>
C3h
E5h
Sr
Sr
P
P
P
(Idle)
AD,1
AD,1
A\
A
A
REPEAT UNTIL THE 1WB BIT HAS CHANGED TO 0.
I 2 C Communication Examples (continued)
Sr
A
P
P
S
A
<byte>
<byte>
AD,1
AD,1
A\
A
A
A
<byte>
<byte>
<byte>
P
A\
A\
A\
P
P
P
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