DS1721 查看數據表（PDF） - Maxim Integrated

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DS1721

2-Wire Digital Thermometer and Thermostat

Maxim Integrated 

DS1721

SAMPLE COMMAND SEQUENCE Table 5

Example: After power-up, initiates a temperature conversion, bus master reads temperature

BUS MASTER DS1721 DATA (MSB COMMENTS

MODE

MODE

FIRST)

TX

RX

START Bus Master initiates a START condition

TX

RX

<address, 0> Bus Master sends DS1721 address; R/ W = 0

RX

TX

ACK

DS1721 generates acknowledge bit

TX

RX

51h

Bus Master sends start convert T protocol

RX

TX

ACK

DS1721 generates acknowledge bit

TX

RX

START Bus Master initiates a repeated START condition

TX

RX

<address, 0> Bus Master sends DS1721 address; R/ W = 0

RX

TX

ACK

DS1721 generates acknowledge bit

TX

RX

AAh

Bus Master sends read temperature protocol

RX

TX

ACK

DS1721 generates acknowledge bit

TX

RX

START Bus Master initiates a repeated START condition

TX

RX

<address, 1> Bus Master sends DS1721 address; R/ W =1

RX

TX

ACK

DS1721 generates acknowledge bit

RX

TX <1 data byte> DS1721 transmits MSB of temperature

TX

RX

ACK

Bus Master generates acknowledge bit

RX

TX <1 data byte> DS1721 transmits LSB of temperature

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