DS1720 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS1720 Datasheet PDF : 12 Pages
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DS1720
DS1720 COMMAND SET Table 3
INSTRUCTION
Read Temperature
Read Counter
Read Slope
Start Convert T
Stop Convert T
Write TH
Write TL
Read TH
Read TL
Write Config
Read Config
DESCRIPTION
PROTOCOL
TEMPERATURE CONVERSION COMMANDS
Reads last converted temperature
AAh
value from temperature register
Reads value of count remaining from
A0h
counter
Reads value of the slope accumulator
A9h
Initiates temperature conversion
EEh
Halts temperature conversion
22h
THERMOSTAT COMMANDS
Writes high temperature limit value into
01h
TH register
Writes low temperature limit value into
02h
TL register
Reads stored value of high tempera-
A1h
ture limit from TH register
Reads stored value of low temperature
A2h
limit from TL register
Writes configuration data to configura-
0Ch
tion register
Reads configuration data from configu-
ACh
ration register
3–WIRE BUS
DATA AFTER
ISSUING
PROTOCOL
<read data>
<read data>
<read data>
Idle
Idle
<write data>
<write data>
<read data>
<read data>
<write data>
<read data>
NOTES
1
1
2
2
2
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 10 ms at room temperature. After issuing a write command, no further writes
should be requested for at least 10 ms.
030598 7/12
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