Datasheet

DS1626/DS1726
11 of 12
Figure 7. 3-WIRE COMMUNICATION
a) Start Temperature Conversion
b) Write to the T
H
/T
L
Registers
c) Write to the Configuration Register
d) Read from the Temperature Register
e) Read from the Configuration Register
Configuration Reg. Data from Master
CLK
D
2
D
1
D
0
11
0
0
0 0
Write Config [0Ch] Command
DQ
R
ST
D
3
D
4
D
5
D
6
D
7
0
0
CLK
0
0
0
1
Start Convert T [51h] Command
DQ
R
ST
1 0
1
0
CLK
D
2
D
1
D
0
0
0
DQ
⋅
⋅
⋅
R
ST
⋅
⋅
⋅
D
3
D
4
D
5
D
6
D
7
D
8
0 0
D
9
D
10
D
11
Write TH [01h] or TL [02h] Command
T
H
or T
L
Data from Master
C
1
C
0
0 0
Temperature Data from DS1626/DS1726
CLK
D
2
D
1
D
0
1
0
10
Read Temperature [AAh] Command
DQ
⋅
⋅
⋅
R
ST
⋅
⋅
⋅
D
3
D
4
D
5
D
6
D
7
D
8101 0
D
9
D
10
D
11 000
⋅
⋅
⋅
Configuration Reg. Data from DS1626/DS1726
CLK
D
2
D
1
D
0
11
0
0
0 1
Read Config [ACh] Command
DQ
R
ST
D
3
D
4
D
5
D
6
D
7
0
1