ds1720 Maxim Integrated Products, Inc., ds1720 Datasheet - Page 9

• Manufacturer Part Number: ds1720
• Description: Ds1720 Econ-digital Thermometer And Thermostat
• Manufacturer: Maxim Integrated Products, Inc.

DS1720 COMMAND SET Table 3
Read Temperature Temperature Reads last converted
Read Counter
Read Slope
Start Convert T
Stop Convert T
Write T
Write T
Read T
Read T
Write Config
Read Config
NOTES:
1. In continuous conversion mode, a Stop Convert T command will halt continuous conversion. To
2. Writing to the E
INSTRUCTION
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.
further writes should be requested for at least 10 ms.
H
L
H
L
2
temperature value from
temperature register
Reads value of count remaining
from counter
Reads value of the slope
accumulator
Initiates temperature conversion
Halts temperature conversion
Writes high temperature limit
value into T
Writes low temperature limit value
into T
Reads stored value of high
temperature limit from T
Reads stored value of low
temperature limit from T
Writes configuration data to
configuration register
Reads configuration data from
configuration register
typically requires 10 ms at room temperature. After issuing a write command, no
TEMPERATURE CONVERSION COMMANDS
L
register
DESCRIPTION
H
register
THERMOSTAT COMMANDS
H
L
register
register
9 of 14
PROTOCOL
AAh
ACh
A0h
A9h
EEh
A1h
A2h
0Ch
22h
01h
02h
DATA AFTER
3-WIRE BUS
PROTOCOL
<write data>
<write data>
<write data>
<read data>
<read data>
<read data>
<read data>
<read data>
<read data>
ISSUING
Idle
Idle
NOTES
DS1720
2
2
2
2
2
2
1
1