DS1621 데이터 시트보기 (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS1621

Digital Thermometer and Thermostat

Dallas Semiconductor -> Maxim Integrated 

DS1621

measurement will be completed and the DS1621 will remain idle until a Start Convert T is issued to

resume continuous operation.

DS1621 COMMAND SET Table 3

INSTRUCTION

Read Temperature

Read Counter

Read Slope

Start Convert T

Stop Convert T

Access TH

Access TL

Access Config

2-WIRE BUS DATA

AFTER ISSUING

DESCRIPTION

PROTOCOL

PROTOCOL

TEMPERATURE CONVERSION COMMANDS

Read last converted temperature

AAh

<read 2 bytes data>

value from temperature register.

Reads value of count remaining

A8h

<read data>

from counter.

Reads value of the slope

A9h

<read data>

accumulator.

Initiates temperature

EEh

idle

conversion.

Halts temperature conversion.

22h

idle

THERMOSTAT COMMANDS

Reads or writes high

A1h

<write data>

temperature limit value into TH

register.

Reads or writes low

A2h

<write data>

temperature limit value into TL

register.

Reads or writes configuration

ACh

<write data>

data to configuration register.

NOTES

1

1

2

2

2

NOTES:

1. In continuous conversion mode a Stop Convert T command will halt continuous conversion. To

restart the Start Convert T command must be issued. In one–shot mode a Start Convert T command

must be issued for every temperature reading desired.

2. Writing to the E2 typically requires 10ms at room temperature. After issuing a write command, no

further writes should be requested for at least 10 ms.

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