Rainbow-electronics DS1726 Manual do Utilizador descarregar pdf (Página 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

101

0

Start Convert T [51h] Command

DQ

R

S

T

01

0

0

Configuration Reg. Data from Master

CLK

D

2

D

1

D

0

0

0

0

000

Write Config [0Ch] Command

DQ

R

S

T

D

3

D

4

D

5

D

6

D

7

1 1

CLK

D

2

D

1

D

0

00

0

0

DQ

× × ×

R

S

T

× × ×

D

3

D

4

D

5

D

6

D

7

D

8

00

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

010100

Read Config [ACh] Command

DQ

R

S

T

D

3

D

4

D

5

D

6

D

7

1 1

Temperature Data from DS1626/DS1726

CLK

D

2

D

1

D

0

01

0

1

Read Temperature [AAh] Command

DQ

× × ×

R

S

T

× × ×

D

3

D

4

D

5

D

6

D

7

D

8

0

101

D

9

D

10

D

1

1

000

× × ×

1 2 ... 7 8 9 10 11 12 13

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