Rainbow Electronics DS1726 - Manual (Page 12)

DS1626/DS1726
12 of 13
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
CLK
1 0 1 0
Start Convert T [51h] Command
DQ
RST
0 1 0 0
Configuration Reg. Data from Master
CLK
D
2
D
1
D
0
0 0 0 0 0 0
Write Config [0Ch] Command
DQ
RST
D
3
D
4
D
5
D
6
D
7
1 1
CLK
D
2
D
1
D
0
0 0 0 0 DQ
Ч Ч Ч
RST
Ч Ч Ч
D
3
D
4
D
5
D
6
D
7
D
8
0 0 D
9
D
10
D
11
C
7
C
6
Write TH [01h] or TL [02h] Command T
H
or T
L
Data from Master
Configuration Reg. Data from DS1626/DS1726
CLK
D
2
D
1
D
0
0 1 0 1 0 0
Read Config [ACh] Command
DQ
RST
D
3
D
4
D
5
D
6
D
7
1 1
Temperature Data from DS1626/DS1726
CLK
D
2
D
1
D
0
0 1 0 1
Read Temperature [AAh] Command
DQ
Ч Ч Ч
RST
Ч Ч Ч
D
3
D
4
D
5
D
6
D
7
D
8
0 1 0 1 D
9
D
10
D
11
0 0 0 Ч Ч Ч