Specifications

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WT1231H
3.4.17. Temperature Sensor
When temperature is measured, the receiver ADC is used to digitize the sensor response. Most receiver blocks are
disabled, and temperature measurement can only be triggered in Standby or Frequency Synthesizer modes.
The response of the temperature sensor is -1°C / Lsb. A CMOS temperature sensor is not accurate by nature, therefore it
should be calibrated at ambient temperature for precise temperature readings.
TempValue
-1 ° C/Lsb
TempValue(t)
TempValue(t)-1
Returns 150d (typ.)
Needs calibration
-40 ° C
t t+1 Ambient
+85
°C
Figure 16. Temperature Sensor Response
It tak
es less than 100 microseconds for the WT1231H to evaluate the temperature (from setting TempMeasStart to 1
to TempMeasRunning reset).
3.4.18. Timeout Function
The WT1231H includes a Timeout function, which allows it to automatically shut-down the receiver after a
receive sequence and therefore save energy.

Timeout interrupt is generated TimeoutRxStart x 16x Tbit after switching to RX mode if RssiThreshold flag does not
raise within this time frame

Timeout interrupt is generated TimeoutRssiThresh x 16 x Tbit after RssiThreshold flag has been raised.
Th
is time
out interrupt can be used to warn the companion processor to shut down the receiver and return to a lower power
mode.