參數(shù)資料
型號(hào)： DS1720
英文描述： Econo . Digital Thermometer and Thermostat
文件頁(yè)數(shù)： 7/12頁(yè)
文件大?。?/td> 77K
代理商： DS1720
DS1720
030598 7/12
DS1720 COMMAND SET
Table 3
INSTRUCTION
DESCRIPTION
PROTOCOL
3–WIRE BUS
DATA AFTER
ISSUING
PROTOCOL
NOTES
TEMPERATURE CONVERSION COMMANDS
Read Temperature
Reads last converted temperature
value from temperature register
AAh
<read data>
Read Counter
Reads value of count remaining from
counter
A0h
<read data>
Read Slope
Reads value of the slope accumulator
A9h
<read data>
Start Convert T
Initiates temperature conversion
EEh
Idle
1
Stop Convert T
Halts temperature conversion
22h
Idle
1
THERMOSTAT COMMANDS
Write TH
Writes high temperature limit value into
TH register
01h
<write data>
2
Write TL
Writes low temperature limit value into
TL register
02h
<write data>
2
Read TH
Reads stored value of high tempera-
ture limit from TH register
A1h
<read data>
2
Read TL
Reads stored value of low temperature
limit from TL register
A2h
<read data>
2
Write Config
Writes configuration data to configura-
tion register
0Ch
<write data>
2
Read Config
Reads configuration data from configu-
ration register
ACh
<read data>
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 E
2
typically requires 10 ms at room temperature. After issuing a write command, no further writes
should be requested for at least 10 ms.
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