Rainbow Electronics DS1720 - Manual (Page 7)

DS1720
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DS1720 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 Counter Reads value of count remaining from
counter A0h
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
Write TH Writes high temperature limit value into
TH register 01h 2
Write TL Writes low temperature limit value into
TL register 02h 2
Read TH Reads stored value of high tempera-
ture limit from TH register A1h 2
Read TL Reads stored value of low temperature
limit from TL register A2h 2
Write Config Writes configuration data to configura-
tion register 0Ch 2
Read Config Reads configuration data from configu-
ration 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 10 ms at room temperature. After issuing a write command, no further writes
should be requested for at least 10 ms.