D1731 View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated

Part Name

Description

Manufacturer

D1731

High-Precision Digital Thermometer and Thermostat

Dallas Semiconductor -> Maxim Integrated 

DS1631/DS1631A/DS1731

OPERATION EXAMPLE

In this example, the master configures the DS1631/DS1631A/DS1731 (A1A2A3 = 000) for continuous

conversions and thermostatic function.

MASTER

MODE

TX

TX

RX

TX

RX

TX

RX

TX

TX

TX

RX

TX

RX

TX

RX

TX

RX

TX

TX

TX

RX

TX

RX

TX

RX

TX

RX

TX

TX

TX

RX

TX

RX

TX

THERMETER*

MODE

RX

RX

TX

RX

TX

RX

TX

RX

RX

RX

TX

RX

TX

RX

TX

RX

TX

RX

RX

RX

TX

RX

TX

RX

TX

RX

TX

RX

RX

RX

TX

RX

TX

RX

DATA

(MSb first)

START

90h

ACK

ACh

ACK

02h

ACK

STOP

START

90h

ACK

A1h

ACK

28h

ACK

00h

ACK

STOP

START

90h

ACK

A2h

ACK

0Ah

ACK

00h

ACK

STOP

START

90h

ACK

51h

ACK

STOP

COMMENTS

START condition from MASTER.

MASTER sends control byte with R/¯W¯ = 0.

Acknowledge bit from THERMOMETER.

MASTER sends Access Config command.

Acknowledge bit from THERMOMETER.

MASTER writes a data byte to the configuration register to

put the THERMOMETER in continuous conversion mode

and set the TOUT polarity to active high.

Acknowledge bit from THERMOMETER.

STOP condition from MASTER.

START condition from MASTER.

MASTER sends control byte with R/¯W¯ = 0.

Acknowledge bit from THERMOMETER.

MASTER sends Access TH command.

Acknowledge bit from THERMOMETER.

MASTER sends most significant data byte for TH = +40°C.

Acknowledge bit from THERMOMETER.

MASTER sends least significant data byte for TH = +40°C.

Acknowledge bit from THERMOMETER.

STOP condition from MASTER.

START condition from MASTER.

MASTER sends control byte with R/¯W¯ = 0.

Acknowledge bit from THERMOMETER.

MASTER sends Access TL command.

Acknowledge bit from THERMOMETER.

MASTER sends most significant data byte for TL = +10°C.

Acknowledge bit from THERMOMETER.

MASTER sends least significant data byte for TL = +10°C.

Acknowledge bit from THERMOMETER.

STOP condition from MASTER.

START condition from MASTER.

MASTER sends control byte with R/¯W¯ = 0.

Acknowledge bit from THERMOMETER.

MASTER sends Start Convert T command.

Acknowledge bit from THERMOMETER.

STOP condition from MASTER.

*THERMOMETER = DS1631, DS1631A, or DS1731

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