Rainbow-electronics DS75LV Bedienungsanleitung PDF herunterladen (Seite 12)

DS75LV: Digital Thermometer and Thermostat

12 of 13

Figure 9. 2-Wire Interface Timing

(DS75LV) (DS75LV)

D2D6

D5 D4

WAA1

1AD7

b) Write to the Configuration Register

100

Address ByteSTART

SCL

SDA

ACK

Pointer Byte

Data Byte

(from Master)

STOP

ACK

(DS75LV)

(DS75LV) (DS75LV)

D2D6

D5 D4

WAA1

1AD7

b) Write to the Configuration Register

100

Address ByteSTART

SCL

SDA

ACK

Pointer Byte

Data Byte

(from Master)

STOP

ACK

(DS75LV)

c) Write to the T

or T

HYST

A2 A1

SCL

SDA

Address Byte

START

ACK

(DS75LV)

000

Pointer Byte

ACK

(DS75LV)

D2 D0D7D6 D5 D4

D2 D1

LS Data Byte

(from Master)

MS Data Byte

(from Master)

STOP

ACK

(DS75LV)

ACK

(DS75LV)

c) Write to the T

or T

HYST

A2 A1

SCL

SDA

Address Byte

START

ACK

(DS75LV)

000

Pointer Byte

ACK

(DS75LV)

D2 D0D7D6 D5 D4

D2 D1

LS Data Byte

(from Master)

MS Data Byte

(from Master)

STOP

ACK

(DS75LV)

ACK

(DS75LV)

d) Read Single Byte (new pointer location)

(DS75LV)

START

(from DS75LV)

(Master)

(DS75LV )

(DS75LV)

A0S1 1

A2 A1 A0

000 A

0D6D5

D2 D1 D0 P

A2 A1

ACK

Repeat

SCL

SDA

Address ByteSTART

Pointer Byte

Data Byte STOP

NACKAddress Byte

ACK

P1 P0

A0S1 1

A2 A1 A0

000 A

0D6D5

D2 D1 D0 P

A2 A1

ACK

Repeat

SCL

SDA

Address ByteSTART

Pointer Byte

Data Byte STOP

NACKAddress Byte

ACK

P1 P0P1 P0

e) Read From the Configuration Register (current pointer location)

SCL

SDA

START

D2 D1 D0 P

00 A2

A1 A0

Data Byte

(from DS75LV)

STOP

NACK

(Master)

Address Byte ACK

(DS75LV)

e) Read From the Configuration Register (current pointer location)

SCL

SDA

START

D2 D1 D0 P

00 A2

A1 A0

Data Byte

(from DS75LV)

STOP

NACK

(Master)

Address Byte ACK

(DS75LV)

D2 D1 D0 P

00 A2

A1 A0

Data Byte

(from DS75LV)

STOP

NACK

(Master)

Address Byte ACK

(DS75LV)

a) Read 2-Bytes From the Temperature, T

or T

HYST

SCL

SDA

START

D6 D5

D3 D2 D1 D0D7

A2 A1

MS Data Byte

(from DS75LV)

ACK

(Master)

Address Byte ACK

(DS75LV)

D6 D5 D4

D2 D1

LS Data Byte

(from DS75LV)

STOP

NACK

(Master)

a) Read 2-Bytes From the Temperature, T

or T

HYST

SCL

SDA

START

D6 D5

D3 D2 D1 D0D7

A2 A1

MS Data Byte

(from DS75LV)

ACK

(Master)

Address Byte ACK

(DS75LV)

D6 D5 D4

D2 D1

LS Data Byte

(from DS75LV)

STOP

NACK

(Master)

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

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