DS1720 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS1720

Econo – Digital Thermometer and Thermostat

Dallas Semiconductor -> Maxim Integrated 

DS1720

FUNCTION EXAMPLE

Example: CPU sets up DS1720 for continuous conversion and thermostatic function.

DS1720 MODE

CPU MODE

(3–WIRE)

DATA (LSB FIRST)

COMMENTS

TX

RX

0Ch

CPU issues Write Config command

TX

RX

00h

CPU sets DS1720 up for continuous conversion

TX

RX

Toggle RST

CPU issues Reset to DS1720

TX

RX

01h

CPU issues Write TH command

TX

RX

0050h

CPU sends data for TH limit of +40°C

TX

RX

Toggle RST

CPU issues Reset to DS1720

TX

RX

02h

CPU issues Write TL command

TX

RX

0014h

CPU sends data for TL limit of +10°C

TX

RX

Toggle RST

CPU issues Reset to DS1720

TX

RX

A1h

CPU issues Read TH command

RX

TX

0050h

DS1720 sends back stored value of TH for CPU

to verify

TX

RX

Toggle RST

CPU issues Reset to DS1720

TX

RX

A2h

CPU issues Read TL command

RX

TX

0014h

DS1720 sends back stored value of TL for CPU

to verify

TX

RX

Toggle RST

CPU issues Reset to DS1720

TX

RX

EEh

CPU issues Start Convert T command

TX

RX

Toggle RST

CPU issues Reset to DS1720

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