DS1720S 查看數據表（PDF） - Maxim Integrated
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DS1720S Datasheet PDF : 14 Pages
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DS1720 COMMAND SET Table 3
3-WIRE BUS
DATA AFTER
ISSUING
INSTRUCTION
DESCRIPTION
PROTOCOL PROTOCOL
TEMPERATURE CONVERSION COMMANDS
Read Temperature Temperature Reads last converted
AAh
<read data>
temperature value from
temperature register
Read Counter
Reads value of count remaining
A0h
<read data>
from counter
Read Slope
Reads value of the slope
A9h
<read data>
accumulator
Start Convert T Initiates temperature conversion
EEh
Idle
Stop Convert T Halts temperature conversion
22h
Idle
THERMOSTAT COMMANDS
Write TH
Write TL
Writes high temperature limit
01h
value into TH register
Writes low temperature limit value
02h
into TL register
<write data>
<write data>
Read TH
Read TL
Reads stored value of high
A1h
temperature limit from TH register
Reads stored value of low
A2h
temperature limit from TL register
<read data>
<read data>
Write Config
Writes configuration data to
0Ch
<write data>
configuration register
Read Config
Reads configuration data from
ACh
<read data>
configuration register
DS1720
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.
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