Rainbow Electronics DS1620 - Manual (Page 8)

DS1620
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DS1620 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
temperature 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
configuration register. 0Ch <write data> 2
Read Config Reads configuration data from
configuration 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.