Rainbow Electronics DS1621 - Manual (Page 11)

DS1621
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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 DESCRIPTION PROTOCOL
2-WIRE BUS DATA
AFTER ISSUING
PROTOCOL NOTES
TEMPERATURE CONVERSION COMMANDS
Read Temperature Read last converted temperature
value from temperature register. AAh
Read Counter Reads value of count remaining
from counter. A8h
Read Slope Reads value of the slope
accumulator. A9h
Start Convert T Initiates temperature
conversion. EEh idle 1
Stop Convert T Halts temperature conversion. 22h idle 1
THERMOSTAT COMMANDS
Access TH Reads or writes high
temperature limit value into TH
register. A1h 2
Access TL Reads or writes low
temperature limit value into TL
register. A2h 2
Access Config Reads or writes configuration
data to configuration register. ACh 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 10ms at room temperature. After issuing a write command, no
further writes should be requested for at least 10 ms.