Temperature Sensor; Table 4-6: Gettemp Command; Table 4-7: Gettemp Response - Semtech LR1110 User Manual

4.3 Temperature Sensor

A built-in temperature sensor, giving an indication of the internal device temperature, is implemented in the LR1110. The
temperature measurement can be triggered using the command GetTemp( ):

Table 4-6: GetTemp Command

Byte
Data from Host
Data to Host

Table 4-7: GetTemp Response

Byte
Data from Host
Data to Host
The Temperature value is a function of an internal reference voltage (typ. 1.35V), and a typical temperature characteristic
(typ -1.7mV/°C), and can be approximated using the following formula:
Temperature degC 
LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
0
0x01
Stat1
0
0x00
Stat1
1000
---------------------------
 25 +
 
– 1.7mV/°C
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1
0x00
Temp(15:8)
Temp(10:0)/2047*1.35 - 0.7295

1
0x1A
Stat2
2
0x00
Temp(7:0)

34 of 130
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